Si47xx-EVB - Mouser Electronics

Si47xx-EVB - Mouser Electronics
Si 4 7xx-EVB
Si47 XX E VALUATION B OA RD U SER ’ S G UIDE
1. Introduction
Thank you for purchasing the Silicon Laboratories, Inc. Si47xx Evaluation Board (EVB). The EVB and associated
software have been designed to speed up the overall development process. We look forward to working with you,
and have posted support articles, answers to frequently asked questions, and application notes at
www.mysilabs.com. Table 1 describes all of the available products and features in the Si47xx family.
Si4700
FM Receiver

Si4701
FM Receiver with RDS

Si4702
FM Receiver

Si4703
FM Receiver with RDS

Si4704
FM Receiver

Si4705
FM Receiver with RDS


2
Si47061
High Performance RDS Receiver

 
Si47071
WB Receiver with SAME
Si4708
FM Receiver

Si4709
FM Receiver with RDS

Si4710
FM Transmitter

Si4711
FM Transmitter with RDS

Si4712
FM Transmitter with RPS

Si4713
FM Transmitter with RDS & RPS

Si4720
FM Transceiver


Si4721
FM Transceiver with RDS


Si4730
AM/FM Receiver


Si4731
AM/FM Receiver with RDS


Package Size (mm)
AEC-Q100 Qualified
Embedded FM antenna
Digital Output
Digital Input
SAME
RPS
High Performance RDS
RDS
WB Receiver
SW/LW Receiver
AM Receiver
General Description
FM Receiver
Part
Number
FM Transmitter
Table 1. Product Family Function
4x4
4x4

3x3
3x3



3x3


3x3


3x3
3x3

2.5x2.5
2.5x2.5



3x3


3x3



3x3



3x3



3x3



3x3




3x3
 2

3x3
Notes:
1. Si4706, Si4707, and Si474x are covered under NDA.
2. High Performance RDS is available in Si4705/31/35/85-D50 and later.
Rev. 0.7 5/11
Copyright © 2011 by Silicon Laboratories
Si47xx-EVB
Si47xx-EVB


Si4736
AM/FM/WB Receiver



Si4737
AM/FM/WB Receiver with RDS



Si4738
FM/WB Receiver


Si4739
FM/WB Receiver with RDS


Si47401
AM/FM Receiver


AM/FM Receiver with RDS


Si47421
AM/LW/SW/FM/WB Receiver




Si47431
AM/LW/SW/FM/WB Receiver with
RDS




Si47441
AM/LW/SW/FM Receiver



Si47451
AM/LW/SW/FM Receiver with RDS



Si47491
High-Performance RDS Receiver
Si4784
FM Receiver

Si4785
FM Receiver with RDS

Si4741
1
3x3
 2

3x3

3x3

 
 
 2
3x3




 
Rev. 0.7
3x3

3x3
 
Notes:
1. Si4706, Si4707, and Si474x are covered under NDA.
2. High Performance RDS is available in Si4705/31/35/85-D50 and later.
2
Package Size (mm)

AEC-Q100 Qualified
AM/SW/LW/FM Receiver with RDS
Embedded FM antenna
Si4735
Digital Output

Digital Input

SAME

RPS
AM/SW/LW/FM Receiver
General Description
High Performance RDS
Si4734
Part
Number
RDS
WB Receiver
AM Receiver
SW/LW Receiver
FM Receiver
FM Transmitter
Table 1. Product Family Function

4x4

4x4

4x4

4x4

4x4

4x4

4x4

3x3

3x3
Si47xx-EVB
TABLE O F C ONTENTS
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1. Si47xx Baseboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.2. Si47xx Daughtercards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3. Recommended Hardware Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1. Hardware Setup for FM Transmitter Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.2. Hardware Setup for FM or Weather Band Receiver Test . . . . . . . . . . . . . . . . . . . . .29
3.3. Hardware Setup for AM Receiver Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
4. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.1. Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.2. Board Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
4.3. Switching Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4. State Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.5. Disconnecting the EVB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5. FM Transmitter GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.1. Configuring the Si47xx as an FM Transmitter Using Analog Audio Input . . . . . . . . . 40
5.2. Configuring the Si47xx as an FM Transmitter Using Digital Audio
with Analog Audio Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.3. Configuring the Si47xx as an FM Transmitter Using Digital Audio
with SPDIF Digital Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.4. FM Transmitter Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
5.5. FM Transmitter Settings (Analog Mode) Property Window . . . . . . . . . . . . . . . . . . . . 45
5.6. FM Transmitter Settings (Digital Mode) Property Window . . . . . . . . . . . . . . . . . . . . 47
5.7. CODEC Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.8. SPDIF Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5.9. FM Transmitter Receive Power Scan Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.10. FM Transmitter Radio Data Service (RDS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.11. FM Transmitter Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6. FM Receiver GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.1. Configuring the Si47xx as an FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.2. FM Receiver Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.3. FM Receiver Settings Property Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
6.4. CODEC and SPDIF Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.5. FM Receiver RDS Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
6.6. FM Receiver RDS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.7. FM UI Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.8. FM Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.9. FM Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
6.10. FM Receiver Logging Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
6.11. FM Receiver Configuration Helper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
7. Weather Band GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.1. WB Receiver Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.2. Weather Band Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Rev. 0.7
3
Si47xx-EVB
7.3. Weather Band Settings Property Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
7.4. Weather Band Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . . 92
7.5. Weather Band Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
7.6. Weather Band Receiver SAME Event Data (Si4707 only) . . . . . . . . . . . . . . . . . . . . 94
8. AM Receiver GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
8.1. AM Receiver Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
8.2. AM Receiver Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
8.3. AM Receiver Property Settings Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
8.4. AM Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
8.5. AM Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
8.6. AM Receiver Logging Tools Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8.7. AM Receiver Configuration Helper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
9. Using the EVB with a 9 V Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
10. Debugging Guidelines for Si47xx EVB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
11. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12. Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
12.1. Si47xx-EVB Baseboard Rev 1.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
12.2. Si471x/2x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
12.3. Si473x-EVB Daughtercard Rev. 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
12.4. Si474x–EVB Daughtercard Rev 1.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
12.5. Si4749-EVB Daughtercard Rev 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
12.6. Antenna Card Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
13. Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
13.1. Si47xx-EVB Baseboard Rev 1.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
13.2. Si471x/2x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
13.3. Si473x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
13.4. Si474x-EVB Daughtercard Rev 1.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
13.5. Si4749-EVB Daughtercard Rev 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
13.6. Antenna Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155
Documentation Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164
4
Rev. 0.7
Si47xx-EVB
This user's guide contains information related to only the Si47xx EVBs itemized in Table 2. Table 2 serves as a
quick reference guide for the sections of interest for your EVB. Sections 1, 4, 9, and 10 of the document apply to all
EVBs.
Table 2. Quick Reference Guide
Part
Description
Recommended
HW Setup
GUI
Bill of Materials
Schematics
Layout
Si4704/05/
06/84/85
Sections 2.1.,
2.2.1., and
2.2.6.
Section 3.2.
Section 6.
Section 11. Tables Sections 12.1., Sections
29 and 30
12.2.
13.1., 13.2.
Si4707
Section 2.2.2.,
2.2.5., 2.2.6.
Section 3.2.
Section 7.
Section 11.,
Tables 29 and 31
Si4710/11/
12/13
Sections 2.1.,
2.2.1., 2.2.6.
Section 3.1.
Section 5.
Section 11. Tables Sections 12.1., Sections
29 and 30
12.2.
13.1., 13.2.
Si4720/21
Sections 2.1.,
2.2.1., 2.2.6.
Sections 3.1.
and 3.2.
Sections 5.
and 6.
Section 11. Tables Sections 12.1., Sections
29 and 30
12.2.
13.1., 13.2.
Si4730/31
Sections 2.1.,
2.2.2., 2.2.5.,
2.2.6
Sections 3.2.
and 3.3.
Sections 6.
and 8.
Section 11. Tables Sections 12.1., Sections
29, 31, 34, 35, and 12.3., 12.6.1., 13.1., 13.3.,
36
12.6.2.
13.6.1.,
13.6.2.
Si4734/35
Sections 2.1.,
2.2.2., 2.2.5.,
2.2.6.
Sections 3.2.
and 3.3.
Sections 6.
and 8.
Section 11. Tables Sections 12.1., Sections
29 and 37
12.3., 12.6.3.
13.1., 13.3.,
13.6.3.
Si4736/37
Sections 2.1.,
2.2.2., 2.2.5.,
2.2.6.
Sections 3.2.
and 3.3.
Sections 6.,
7., and 8.
Section 11. Tables Sections 12.1., Sections
29 and 37
12.3., 12.6.3.
13.1., 13.3.,
13.6.3.
Si4738/39
Sections 2.1.,
2.2.2., 2.2.5.,
2.2.6.
Sections 3.2.
and 3.3.
Sections 6.,
and 7.
Section 11. Tables Sections 12.1., Sections
29 and 37
12.3., 12.6.3.
13.1., 13.3.,
13.6.3.,
Si4740/41/ Section 2.1.,
42/43/44/45 2.2.3., 2.2.5.,
2.2.6.
Sections 3.2.
and 3.3.
Sections 7.
and 8.
Section 11., Table Sections 12.1., Sections
29, 32, 37
12.4., 12.6.4.
13.1.,
13.4.,13.6.4.
Section 3.2.
Section 6.
Section 11. Tables Sections 12.1., Section
29 and 33
12.5.
13.1., 13.5.
Si4749
Sections 2.1.,
2.2.4. , 2.2.6.
Rev. 0.7
Section 12.1.,
12.3.
Section
13.1., 13.3.
5
Si47xx-EVB
There are ten different EVB kits within the Si47xx family. Each kit ships with a standard set of components that are
common to all kits and a unique set that depends on the EVB kit P/N. Standard set of components are:







Customer welcome and evaluation letter
EVB Characterization Report
USB cable
RCA cable
9 V battery
Headphones
Si47xx CD including:
Data
sheet
Development
application GUI rev 2.5.4 or later
guide
Quick start guide. The unique set of components for each EVB kit is defined in Table 3.
User's
Table 3. Si47xx-EVB Kit Unique Contents
Adapters
EVB Kit
Base
Board
Daughtercard
Antenna
Cards
Antennas
BNC
Male to
RCA
Female
SMA
Male to
BNC
Female
SMA
Female to
BNC Male
SMA
Male to
SMA
Male
Si4705-EVB
Si471x/2x
Si47xx
Base board Daughtercard
Rev1.3 or Rev1.2 or later
later
—
—
Yes
No
No
No
Si4706-EVB
Si471x/2x
Si47xx
Base board Daughtercard
Rev1.3 or Rev1.2 or later
later
—
—
Yes
No
No
No
Si4707-EVB
Si473x
Si47xx
Base board Daughtercard
Rev1.3 or Rev1.2 or later
later
SAME
antenna
Whip
antenna
Yes
No
No
No
Si4713-EVB
Si471x/2x
Si47xx
Base board Daughtercard
Rev1.3 or Rev1.2 or later
later
—
—
Yes
No
No
No
Si4721-EVB
Si471x/2x
Si47xx
Base board Daughtercard
Rev1.3 or Rev1.2 or later
later
—
—
Yes
No
No
No
Si4731-EVB
Si473x
4731 antenna
Si47xx
Base board Daughtercard kit (large ferRev1.3 or Rev1.2 or later rite, medium
ferrite, air loop
later
transformer)
Loop
antenna
Yes
No
No
No
6
Rev. 0.7
Si47xx-EVB
Table 3. Si47xx-EVB Kit Unique Contents (Continued)
Adapters
EVB Kit
Base
Board
Daughtercard
Antenna
Cards
Antennas
BNC
Male to
RCA
Female
SMA
Male to
BNC
Female
SMA
Female to
BNC Male
SMA
Male to
SMA
Male
Si4735-EVB
Si47xx
Base board
Rev1.3 or
later
Si473x
Daughter
Card Rev1.2
or later
SW antenna
Whip
antenna
Yes
No
No
No
Si4737-EVB
Si47xx
Base board
Rev1.3 or
later
Si473x
Daughter
Card Rev1.2
or later
WB antenna
Whip
antenna
Yes
No
No
No
Si4743-EVB
Si47xx
Base board
Rev1.3 or
later
Si474x
Daughter
Card Rev1.3
or later
Antenna
Dummy
Whip
antenna
Yes
Yes
No
Yes
Si4749-EVB
Si47xx
Base board
Rev1.3 or
later
Si4749
Daughter
Card Rev1.0
or later
—
Whip
antenna
Yes
No
Yes
No
Rev. 0.7
7
Si47xx-EVB
2. Description
Si47xx EVB consists of a baseboard, a daughtercard with the Si47xx part pre-mounted, and, if applicable, an
antenna card. The baseboard is common and shared among all Si47xx EVBs. The following sections refer to both
the images in the figures and the silkscreen on the Si47xx EVB. Please refer to both when using this guide.
2.1. Si47xx Baseboard
J6
J27
J30
J52
J57
X1
J61
J54
J68
J69
J75
J76
U22
D1 J79
J74
PB1 SW1
J78
Figure 1. Baseboard Connectors, Jumpers, and Devices
Baseboard power connectors/devices:
J79
J78
J77
USB connector (using USB power)
External power connector
Battery connector
J76
SW1
J61
J68
J69
Terminal block (TB) power connector
Switch to select between USB power or Ext power
Jumper: Baseboard power select (3.3 V or TB)
Jumper: Si47xx VIO power select (3.3 V or adjustable voltage via R73 or TB)
Jumper: Si47xx VDD power select (3.3 V or adjustable voltage via R74 or TB)
8
Rev. 0.7
J77
Si47xx-EVB
Baseboard audio I/O connectors:
J6
J30
RCA output
Line output
Note: Line output will not be supported on new EVBs as of February 14, 2011.
Baseboard clock connectors/devices:
X1
32.768 kHz crystal oscillator
J52
Solder bump: select internal RCLK from oscillator
J54
Ext RCLK SMA connector input
J57
Jumper: Enable or Disable Int RCLK
Baseboard MCU connectors/devices:
U22
C8051F342 MCU
J79
USB connector to communicate with the MCU
J74
JTAG connector for the MCU
PB1
Push button to reset the MCU
D1
LED to confirm power supply to the MCU
Baseboard to Daughtercard connectors:
J27
Si47xx daughtercard connector
J75
Expansion card connector (reserved)
2.1.1. Power Supply Network
Daughterboard
J78
EXT
LDO
1.25–7 V
(R74)
ADJ
Jumper
J69
+3.3 V
VIO
TB
LDO
1.25–3.9 V
(R73)
11 VDD
10
TB +3.3 V
SW1
ADJ
Jumper
J68
Si47xx
TB
Jumper
J61
LDO
+3.3 V
(U17)
J79
USB
+3.3 V
Vmcu
VIO
VDD
Vm
Vio
Vdd
Gnd
J77
BATT
J76
Terminal
Block (TB)
Figure 2. Power Supply Block Diagram
Rev. 0.7
9
Si47xx-EVB
The Si47xx EVB can be powered using one of the following power supply options:
1. USB power supply via J79
2. External dc (Ext DC) power supply via power jack J78 or battery via J77
3. Three separate power supplies (Vdd, Vio, Vmcu) via terminal block J76
The EVB has three supply rails: Vdd, Vio, and Vmcu. Vdd and Vio are routed directly to the daughtercard to power
the Vdd and Vio pins on the Si47xx chip, while Vmcu is used to power the baseboard.
The external dc power supply and battery should not be connected simultaneously. Refer to Section 9. "Using the
EVB with a 9 V Battery‚" on page 108 for more information.
USB Power Supply & EXT DC Power Supply
Switch SW1 is used to select between the USB power supply and Ext dc power supply.
The USB power supply or the Ext dc power supply can be configured in one of the following two modes:
1. Fixed +3.3 V
2. Adjustable Vdd and Vio
Fixed +3.3 V
ADJ
+3.3V
TB
J68
J69
Vmcu
+3.3V
Vdd
TB
Vio
ADJ
+3.3V
TB
Only one LDO is used in this mode which outputs a +3.3 V supply to all three rails (Vdd, Vio, and Vmcu). The
jumpers need to be set according to Figure 3 to use the EVB in this configuration. This is the default configuration
on the EVB.
J61
Figure 3. Default Fixed +3.3 V Jumpers Setting
Terminal Block Power Supply
ADJ
+3.3V
TB
J68
J69
Vmcu
+3.3V
Vdd
TB
Vio
ADJ
+3.3V
TB
If the terminal block supplies are used, then jumpers J61, J68, and J69 need to be set according to Figure 4. The
user then needs to connect three different power supplies for Vdd, Vio, and Vmcu.
J61
Figure 4. Terminal Block Jumpers Setting
10
Rev. 0.7
Si47xx-EVB
2.1.2. Microcontroller
TC_BCLK
(reserved for digital Rx )
Jumper
J41
Daughterboard
S_GPO3/DCLK
MD_GPIO3
MS_GPIO2
MD_GPIO1
J79
USB
J74
JTAG
GPO1
GPO2
GPO3/
DCLK
Jumper
J65
MCU
C8051F342
PB1
Reset
SD_GPO1
MD_GP4
19 18 17
MS_RSTB
RST~ 5
Si47xx
SEN~
SCLK
SDIO
6 7 8
MS_SENB
MS_SCLK
MS_SDIO
Figure 5. MCU Block Diagram
The Si47xx EVB uses a Silicon Laboratories' C8051F342 microcontroller to control the Si47xx and to provide USB
connectivity from the host PC (via connector J79). The LED D1 illuminates to confirm that power is being properly
supplied to the C8051F342 and firmware has loaded. Push-button PB1 manually resets the C8051F342. The JTAG
connector J74 is used to program the C8051F342 at production time, and is not required thereafter.
Rev. 0.7
11
Si47xx-EVB
2.1.3. Reference Clock
Daughterboard
Jumper
J57
X1
32.768 kHz
INT RClk
DIS_INT_RCLK
Si47xx
INT_RCLK
9
RCLK
Jumper
J52
EXT_RCLK
J54
EXT
RClk
Figure 6. Reference Clock Block Diagram
The Si47xx accepts a 32.768 kHz reference clock at the RCLK pin. On the EVB, this clock is provided by a
precision crystal oscillator. The user has the option of not using the onboard oscillator and bringing in the reference
clock from an external source through SMA connector J54.
When the user chooses to provide an external RCLK, jumper J52 has to be set accordingly. The user has the
option to turn off the onboard crystal oscillator by installing jumper J57.
2.1.4. Audio I/O
EVB In (TX only)
47xx Audio2
47xx Audio1
EVB Out (RX only)
TX: Analog/Digital In
TX: Analog In
RX: Digital Out
TX: Digital In
RX: Analog Out
RX: Analog/Digital Out
Audio2
Select
J7
RCA In
Jumper
J5&J13
Audio1
Select
AUDIO2
1
J19
Line In
(white)
0
CODEC IN
LINE
IN
AUDIO2
AUDIO1
16 LIN/ DFS2 LOUT/ DFS1 14
15 RIN/ DOUT
ROUT/ DIN 13
Si47xx
(Daughterboard)
0
0
1
1
J30
Line Out
(black)
CODEC OUT
AUDIO1
LINE
OUT
DIN
DOUT
0
J6
RCA Out
To_TX
From_RX
1
J19
SPDIF In
(white)
S/PDIF IN
Jumper
J45
From_RX
To_TX
Jumper
J44
SPDIF
DOUT
IN
S/PDIF OUT
DIN
SPDIF
OUT
Digital Input
Select
Note: Jumper J44 and J45 are automatically configured in EVB Rev 1.3.
Figure 7. Audio I/O Block Diagram
12
Rev. 0.7
J30
SPDIF Out
(black)
Si47xx-EVB
The EVB supports three different kinds of configurations for the FM transmitter:

Analog In to Analog In
Analog In to Digital In
 Digital In to Digital In

Analog In to Analog In: This configuration provides a way for the user to evaluate the analog audio input for FM
transmission.
The input to the EVB is an analog audio provided via the RCA input connector J7 or LINE In connector J19 (white).
Jumpers J5 and J13 are set to RCA input by default. The user has to change this jumper accordingly if LINE In is
being used. Then the analog audio input is routed directly through a switch to the Si47xx Rin/Lin inputs pin 15 and
16 (Audio2).
Analog In to Digital In: This configuration provides a way for the user to evaluate the Si47xx digital audio input for
FM transmission using an analog audio input.
The input to the EVB is an analog audio provided via the RCA input connector J7 or LINE In connector J19 (white).
Jumpers J5 and J13 are set to RCA input by default. The user has to change this jumper accordingly if LINE In is
being used. Then the analog audio input is converted by CODEC U10 to a serial audio digital data before it is
routed to the Si47xx digital audio input DIO and DFS pin 13 and 14 (Audio1). The DCLK input is routed to the
GPO3/DCLK pin 17. Make sure that jumper J41 is set to DCLK to ensure proper operation.
Digital In to Digital In: This configuration provides a way for the user to evaluate the Si47xx digital audio input for
FM transmission using S/PDIF digital audio commonly found in sound cards.
The input to the EVB is a digital S/PDIF data provided via the S/PDIF In connector J19 (white). The digital S/PDIF
input is converted by S/PDIF Translator U9 to a serial audio digital data before it is routed to the Si47xx digital
audio input DIO and DFS pin 13 and 14 (Audio1). The DCLK input is routed to the GPO3/DCLK pin 17. Make sure
that jumper J41 is set to DCLK to ensure proper operation.
Note: Digital in through J19 will not be supported on new EVBs as of February 14, 2011.
The EVB supports three different kinds of configurations for the FM receiver:

Analog Out to Analog Out
 Digital Out to Digital and Analog Out
 Dual Output (Digital and Analog Out)
Analog Out to Analog Out: This configuration provides a way for the user to evaluate the analog audio output for
receiver operation. The output of the Si47xx is routed to RCA output connector J6 and Line output connector J30.
Digital Out to Digital and Analog Out: This configuration provides a way for the user to evaluate the digital audio
output for FM and AM receive using either S/PDIF digital audio or analog audio through the onboard CODEC. The
Si47xx digital audio out is routed through the S/PDIF translator µ9 to S/PDIF output connector J30 and routed
through the CODEC to RCA output connector J6 and line output connector J30.
Note: Digital output through J30 will not be supported on new EVBs as of February 14, 2011.
Dual Output (Digital and Analog Out): This configuration provides a way for the user to evaluate the analog
audio out and digital audio using S/PDIF digital audio for FM and AM. The analog output of the Si47xx is routed to
RCA output connector J6 and line output connector J30 and the digital audio out is routed through the S/PDIF
translator to S/PDIF output connector J30.
Note: Digital output through J30 will not be supported on new EVBs as of February 14, 2011.
Rev. 0.7
13
Si47xx-EVB
IMPORTANT: Jumper Settings
Because of the many possibilities available to configure the EVB, ensure that these four jumpers are set
accordingly:
1.
2.
3.
4.
J41: GPO3/DCLK setting
J44: TX/RX setting for Audio1 I/O (automatically set by the GUI for baseboard 1.3 and later)
J45: TX/RX setting for Audio2 I/O (automatically set by the GUI for baseboard 1.3 and later)
J5, J13: Analog Audio Source, RCA or Line In
J41: GPO3/DCLK Setting
Upper—DCLK digital audio clock
Lower—GPO3 digital control signal
For configuring the Si47xx digital audio input, make sure that the jumper is set in the Upper position so that the
DCLK signal will be routed to the Si47xx.
J44: TX/RX Setting for Audio1 I/O (automatically set by the GUI for baseboard 1.3 and later)
Upper—Audio1 is set to FM transmit (pin 13 and 14 will be the digital audio input).
Lower—Audio1 is set for FM receive (pin 13 and 14 will be analog/digital audio output).
J45: TX/RX Setting for Audio2 I/O (automatically set by the GUI for baseboard 1.3 and later)
Upper—Audio2 is set to FM transmit (pin 15 and 16 will be the analog/digital audio input).
Lower—Audio2 is set for FM receive (pin 15 and 16 will be the digital audio output).
J5, J13: Analog Audio Source, RCA or Line In
Upper—RCA inputs are used for analog audio source.
Lower—Line inputs are used for analog audio source.
14
Rev. 0.7
Si47xx-EVB
2.2. Si47xx Daughtercards
2.2.1. Si471x/2x Daughtercard
Figure 8. Si471x/2x Daughtercard Connectors and Devices
Daughtercard Connectors and Components:
U1
Si472x FM Transceiver or Si470x FM Receiver or Si471x FM Transmitter
L2
Tuning Inductor
R2
0  resistor to connect FM TX output to 10 cm trace built-in antenna
C8
2 pF capacitor to connect FM TX output to J1 SMA connector
R4
50  termination resistor
J1
J2
J28
SMA connector for FM transmitter output or FM receiver input for embedded antenna
Header for putting external antenna for FM transmitter or embedded antenna for FM receiver
SMA connector for FM receiver input
J29
Headphone jack for FM receiver
Rev. 0.7
15
Si47xx-EVB
Figure 9. Fully Assembled Si471x/2x EVB
Si470x/1x/2x EVBs use Si471x/2x daughtercard with different population options depending on the individual
Si470x/1x/2x part. Please refer to individual Bill of Materials for each board.
16
Rev. 0.7
Si47xx-EVB
2.2.2. Si473x Daughtercard
Figure 10. Si473x Daughtercard Connectors and Devices
Daughtercard connectors and components:
J1
SMA connector for AM test circuit (does not apply to Si4707-EVB)
J2
J24
J26
L4
U1
C2
C3
C8
C12
C13
Header for antenna interface connection
Headphone jack
SMA connector for FM test circuit
270 nH inductor for FM input
Si473x AM/FM/SW Weather Band Receiver chip (or Si4707 WB/Same receiver for Si4707-EVB only)
Vdd bypass capacitor
FM test circuit ac coupling capacitor
AM input ac coupling capacitor
FM input ac coupling capacitor
AM test circuit ac coupling capacitor
Rev. 0.7
17
Si47xx-EVB
Figure 11. Fully Assembled Si473x-EVB with Ferrite Antenna Card
The Si473x/07 EVBs use Si473x daughtercard with different population options depending on the individual
Si473x/07 part. Please refer to individual Bill of Materials for each card.
Table 4 shows the antenna and audio connections for the Si47xx EVBs.
18
Rev. 0.7
Si47xx-EVB
2.2.3. Si474x Daughtercard
Figure 12. Si474x Daughtercard Connectors and Devices
Daughtercard connectors and components:
J4
BNC connector for antenna connection
C6, C1, C18
Vdd bypass capacitor
C2
FM matching component
L1, L5
FM matching component
Q1–2
Cascode amplifier for AM front-end boost circuit.
U1
Si4740/41/42/43 AM/FM Receiver chip
The daughtercard implements the Si4740/41/42/43 AM/FM RDS receive solution.
The Si474x daughtercard also has a cascode amplifier circuit made up of two transistors to provide gain boost for
AM front-end. The on-chip De-Q resistors will then be used to adjust the overall circuit gain. In cases where the AM
reception is too strong, the front-end attenuators can be engaged by using GPIO1 as the control signal.
Rev. 0.7
19
Si47xx-EVB
Figure 13. Fully Assembled Si474x-EVB
20
Rev. 0.7
Si47xx-EVB
2.2.4. Si4749 Daughtercard
Figure 14. Si4749 Daughtercard Connectors and Devices
Daughtercard connectors and components:
J1
SMA connector for pass-thru FM connection
J2
SMA connector for FM antenna connection
C2
Vdd bypass capacitor
L1
FM matching component
U2
Si4749 RDS Receiver
The daughtercard implements the Si4749 RDS receive solution. The SMA connector, J2, allows the user to attach
a whip antenna for FM reception or a signal generator for FM test circuit. A pass-thru connection, J1, is also
present to provide the FM signal to other FM receivers if necessary.
Rev. 0.7
21
Si47xx-EVB
Figure 15. Fully Assembled Si4749-EVB
22
Rev. 0.7
Si47xx-EVB
2.2.5. Antenna Interfaces
2.2.5.1. AM Antenna Interface
Figure 16. Antenna Board Options—SL4X30MW100T (Medium Ferrite), SL5X7X100MW70T (Large
Ferrite), and SL9X5X4MWTF Airloop
The user has the flexibility of choosing one of the two available antenna options. The user can either decide to use
the airloop antenna or the ferrite loop stick antenna.
Rev. 0.7
23
Si47xx-EVB
2.2.5.2. SW and Weather Band Antenna Interfaces
Figure 17. SW/WB Antenna Card (SW Population) and (WB Population)
The BNC connector, J2, will be used to connect a whip antenna for shortwave, FM, and weather band reception.
For SW reception, switch S1 must be in the SW position. The ferrite bar is used for AM reception, and the switch
S1 must be in the AM position for AM reception.
When using the WB Antenna Card, WB reception is through the whip antenna. For a better listening experience,
plug the headphones to J30 rather than J24.
Note: LW not supported with SW/WB Antenna Card.
2.2.5.3. Si474x Antenna Dummy Card
Figure 18. Si474x Antenna Dummy Card
24
Rev. 0.7
Si47xx-EVB
Table 4. Si47xx Antenna Connections
EVB Kit
Name
Receiver
AM Antenna
Options
AM
Connections
FM
Antenna
Options
FM
Connections
Si4705-XEVB
Si4705
None
None
Headphone
J29
Trace
J2
Headphone
J29
Trace
J2
Si4706-XEVB
Si4707-BEVB
Si4706
Si4707
None
None
None
None
SW Antenna
Options
None
SW
Connections
WB Antenna
Options
None
None
None
None
None
Headphone
J24
Whip/SAME
Antenna Card
J2
Headphone
J24
Si4713-BEVB
Si4713
None
None
Trace
J2
None
Si4721-BEVB
Si4721
None
None
Headphone
J29
None
Trace
J2
Headphone
J24
Headphone
J24
Whip/SW
Antenna Card
Whip/SW
Antenna
Card
J2
For SW reception, set the
S1 switch to
SW position.
LW is not supported by the
SW antenna
card.
Headphone
J24
Si4731-XEVB
Si4735-XEVB
Si4737-XEVB
Si4731
Si4735
Si4737
SL5X7X100M
W70T Ferrite
/ Large Ferrite
J2
SL4X30MW1
10T Ferrite /
Medium Ferrite
J2
SL9X5X4MW
TF Autotransformer / Air
loop
J2
SL5X7X100M
W70T Ferrite
/ SW Antenna
card
J2
SL5X7X100M
W70T Ferrite
/ WB Antenna
card
J2
Rev. 0.7
WB
Connections
None
J2
None
25
Si47xx-EVB
Table 4. Si47xx Antenna Connections (Continued)
EVB Kit
Name
Receiver
AM Antenna
Options
FM
Antenna
Options
FM
Connections
Whip/WB
Antenna
Card
J2
AM
Connections
SW Antenna
Options
SW
Connections
Si4743-CEVB
Si4743
Whip / Si474x
Antenna
Dummy card
J4
Whip
J4
Whip
Si4749-CEVB
Si4749
None
None
Whip
J2
None
WB Antenna
Options
WB
Connections
Whip/WB
Antenna Card.
For WB reception, set the S1
switch to WB
position
J2
Table 5. Si47xx Audio Connections
EVB Kit Name
Receiver
Audio Out Options
Audio Out Connections
Audio In Options
Audio Connections
Si4705-X-EVB
Si4705
Headphone
J29
None
None
Unity Gain Buffer / RCA
J6 (Baseboard)
Headphone
J29
None
None
Unity Gain Buffer / RCA
J6 (Baseboard)
None
None
Si4706-X-EVB
Si4707-B-EVB
Si4706
Si4707
Headphone
J29
Unity Gain Buffer / RCA
J6 (Baseboard)
Si4713-B-EVB
Si4713
None
None
Unity Gain Buffer / RCA
J7 (Baseboard)
Si4721-B-EVB
Si4721
Headphone
J29
Unity Gain Buffer / RCA
J7 (Baseboard)
Unity Gain Buffer / RCA
J6 (Baseboard)
Headphone
J24
None
None
Unity Gain Buffer / RCA
J6 (Baseboard)
Headphone
J24
None
None
Unity Gain Buffer / RCA
J6 (Baseboard)
Headphone
J24
None
None
Unity Gain Buffer / RCA
J6 (Baseboard)
Si4731-X-EVB
Si4735-X-EVB
Si4737-X-EVB
Si4731
Si4735
Si4737
Si4743-C-EVB
Si4743
Unity Gain Buffer / RCA
J6 (Baseboard)
None
None
Si4749-C-EVB
Si4749
None
None
None
None
26
Rev. 0.7
Si47xx-EVB
2.2.6. Test Circuit Interfaces
Table 6 shows the test circuit interface connections for Si47xx EVBs.
Table 6. Si47xx Test Circuit Connections
EVB Kit Name
Receiver
AM/SW/LW
Test
Options
AM/SW/LW
Connections
FM Test
Options
FM Connections
Audio Out
Test Options
Audio Out
Connections
Audio In
Test
Options
Audio In
Connections
Si4705-X-EVB
Si4705
None
None
FMI / SMA
J28 through C1.
Remove C9 for
best sensitivity
Unity Gain
Buffer / RCA
J6 (Baseboard)
None
None
LPI / SMA
J1
J28 through C1.
Remove C9 for
best sensitivity
Unity Gain
Buffer / RCA
J6 (Baseboard)
None
None
Si4706-X-EVB
Si4706
None
None
FMI / SMA
LPI / SMA
J1
Si4707-B-EVB
Si4707
None
None
FMI / SMA
J26
Unity Gain
Buffer / RCA
J6 (Baseboard)
None
None
Si4713-B-EVB*
Si4713
None
None
LPI / SMA
J1
None
None
Unity Gain
Buffer / RCA
J7
Si4721-B-EVB
Si4721
None
None
FMI / SMA
J28 through C1.
Remove C9 for
best sensitivity
Unity Gain
Buffer / RCA
J6 (Baseboard)
Unity Gain
Buffer / RCA
J7
LPI / SMA
J1
Si4731-X-EVB
Si4731
AMI / SMA
J1 through
C13, remove
C8 for best
sensitivity
FMI / SMA
J26 through C3.
Remove C12 for
best sensitivity
Unity Gain
Buffer / RCA
J6 (Baseboard)
None
None
Si4735-X-EVB
Si4735
AMI / SMA
J1 through
C13, remove
C8 for best
sensitivity
FMI / SMA
J26 through C3.
Remove C12 for
best sensitivity
Unity Gain
Buffer / RCA
J6 (Baseboard)
None
None
Si4737-X-EVB
Si4737
AMI / SMA
J1 through
C13, remove
C8 for best
sensitivity
FMI / SMA
J26 through C3.
Remove C12 for
best sensitivity
Unity Gain
Buffer / RCA
J6 (Baseboard)
None
None
Si4743-C-EVB
Si4743
AMI / BNC
J4
FMI / BNC
J4
Unity Gain
Buffer / RCA
J6 (Baseboard)
None
None
Si4749-C-EVB
Si4749
None
None
FMI / SMA
J2
None
None
None
None
*Note: The FM RF output will be available through the SMA connector J1. Refer to Table 7.
Table 7. FM Band Attenuation Factors
Frequency (MHz)
Attenuation (dB)
76
32.13
88
30.91
98
30
108
29.2
Rev. 0.7
27
Si47xx-EVB
3. Recommended Hardware Setup
The Si47xx-EVB can be configured for FM transmit, FM receive, WB receive, or AM/SW/LW receive. The following
is a description of how to correctly configure the device for either mode of operation.
3.1. Hardware Setup for FM Transmitter Test
Analog
Audio
Generator
RF
Analyzer
SMA Cable
RCA Cable
J28
J1
FM OUT
J6
FM IN
J7
RCA OUT
RCA IN
J19
Si471x/2x
Daughterboard
Jumpers
Setting
DCLK
TX
GPIO3
J41
RX
RX
J44 J45
S/PDIF
Audio
Generator
TX
J30
Note: J44 and J45 are
automatically configured in
EVB Rev1.3 and later
J76
Si47xx
Baseboard
Terminal
Block (TB)
SW1
USB
EXT pwr
J79
USB pwr
J78
EXT Jack
USB Cable
PC
w/ USB
port
Figure 19. Hardware Setup for FM Transmitter Test
Instructions for Si471x/2x daughtercards:
1. Connect the USB cable from PC to the EVB USB connector J79. The USB connection will serve as a dual purpose:
supplying the power to the EVB and controlling the EVB.
2. Connect an analog audio generator to the RCA input connector J7 using an RCA cable or connect an SPDIF digital audio
generator to connector J19 using an SPDIF cable.
3. Connect an RF analyzer from the FM output SMA connector J1 using an SMA cable.
4. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
28
Rev. 0.7
Si47xx-EVB
3.2. Hardware Setup for FM or Weather Band Receiver Test
RF
Generator
SMA Cable
Audio
Analyzer
RCA Cable
J6
J28 or J26
FM IN
J7
RCA OUT
Optical
Cable
RCA IN
J19
Si47xx
Daughterboard
Jumpers
Setting
DCLK
TX
GPIO3
J41
RX
RX
J44 J45
S/PDIF
OUT
TX
J30
Note: J44 and J45 are
automatically configured in
EVB Rev1.3 and later
J76
Si47xx
Baseboard
Terminal
Block (TB)
SW1
USB
EXT pwr
J79
USB pwr
J78
EXT Jack
USB Cable
PC
w/ USB
port
Figure 20. Hardware Setup for FM/Weather Band Receiver Test
Instructions for Si4704/05/06/2x/3x/8x daughtercards:
1. Connect the USB cable from PC to the EVB USB connector J79. The USB connection will serve as a dual purpose,
supplying the power to the EVB and controlling the EVB.
2. Connect an audio analyzer from the RCA output connector J6 using an RCA cable.
3. Connect an RF generator to the FM input SMA connector J28 or J26 using an SMA cable.
4. Connect an audio analyzer to the S/PDIF output connector, J30, using an optical cable.
5. To avoid possible sources of interference, please remove C9 or C12 (depending on the daughtercard). This will
disconnect the headphone circuit from the test circuit.
6. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
Rev. 0.7
29
Si47xx-EVB
3.3. Hardware Setup for AM Receiver Test
Audio
Analyzer
RCA Cable
J6
J28 or J26
J24 FM IN
J7
RCA OUT
Optical
Cable
RCA IN
J19
Si473x
J1 Daughterboard
RF
Generator
Jumpers
Setting
SMA Cable
DCLK
TX
GPIO3
J41
RX
RX
J44 J45
S/PDIF
OUT
TX
J30
Note: J44 and J45 are
automatically configured in
EVB Rev1.3 and later
J76
Si47xx
Baseboard
Terminal
Block (TB)
USB
SW1
EXT pwr
J79
USB pwr
J78
EXT Jack
USB Cable
PC
w/ USB
port
Figure 21. Hardware Setup for AM Receiver Test (Si473x)
Instructions for Si473x daughtercards.
1. Connect the USB cable from PC to the EVB USB connector, J79. The USB connection will not only allow controlling of the
EVB, but will also provide power to the EVB.
2. Connect either the ferrite antenna or the airloop antenna board. The user also has the option of using the AM test input for
characterization by connecting the AM test input connector J1 to an RF generator source.
3. Connect an audio analyzer to the RCA output (connector J6) using an RCA cable for the analog audio output.
4. Connect an audio analyzer to the S/PDIF output (connector J30) using an optical cable.
5. Or, connect the headphone output to J24 on the daughtercard.
6. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
30
Rev. 0.7
Si47xx-EVB
Audio
Analyzer/
Amplifier
RCA Cable
J6
RCA OUT
Optical Cable
RF
Generator
Antenna
Dummy
AM IN
J4
J19
Si474x
Daughterboard
S/PDIF
OUT
AM Test Setup
J30
Si47xx
Baseboard
J76
Terminal
Block (TB)
SW1
USB
EXT pwr
J79
USB pwr
J77
EXT Jack
USB Cable
PC
w/ USB
port
Figure 22. Hardware Setup for AM Receiver Test (Si474x)
Instructions for Si474x daughtercards:
1. Connect the USB cable from PC to the EVB USB connector, J79. The USB connection will serve two purposes: supplying
the power to the EVB and controlling the EVB.
2. Connect a whip antenna to J4. The user has the option of using the AM test input for characterization by connecting the AM
test input connector J4 to an RF generator source through an antenna dummy.
3. Connect an audio analyzer to the RCA output (connector J6) using an RCA cable for the analog audio output.
4. Connect an audio analyzer to the S/PDIF output (connector J30) using an optical cable.
5. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
Rev. 0.7
31
Si47xx-EVB
4. Getting Started
4.1. Software Installation
The Si47xx Windows GUI (graphical user interface) software is designed for use with the Si47xx evaluation board
(EVB). The GUI software revision number is available under HelpAbout.
The GUI software development program uses a host machine USB port to communicate with the Si47xx EVB and
is tested for use with Windows XP, Windows 2000, and Windows 7.
To install, insert the Silicon Laboratories Si47xx CD into the host machine CD drive and launch Windows Explorer.
Open the CD to explore the contents in a window like the one shown in Figure 23.
Figure 23. Installation and Setup Screen
Important: Open and read the Readme.doc file at this point. It may contain information that is not captured here,
and which could be very important to the functionality of the EVB or software.
Run the Setup.Exe and follow the instructions on the screen.
Note: If you get this Error message: "This setup requires the .NET Framework version 2.0," then you should install the .NET
Framework that is provided on the CD and re-run the setup. The GUI requires version 2.0; however, multiple versions
such as 1.1, 2.0, and 3.0 can be installed simultaneously.
After installation is finished, a Silicon Labs Audio GUI icon will appear on your desktop. Launch the software by
clicking this icon on the desktop as shown in Figure 24.
Figure 24. Launching the GUI
32
Rev. 0.7
Si47xx-EVB
4.2. Board Initialization
After launching the GUI, you will be shown the initialization window as shown in Figure 25.
Note: This window can be accessed at any time by choosing Initialize from the File menu from the main GUI screen.
Figure 25. GUI Initialization Screen
4.2.1. Board Selection
At the top of the initialization window there is a board selection box, as displayed in Figure 26, that allows the
selection of the board that will be controlled by the GUI. This box is populated automatically and will update real
time as boards are connected/removed from the PC. If no EVBs are listed in the board selection box, verify that an
EVB is connected to the USB port of the PC running the GUI application.
After selecting the desired board the GUI will populate the rest of the dialog with options appropriate to the board
selected. You will only see modes/options for the type of board that is currently selected.
Figure 26. Board Selection Box
Rev. 0.7
33
Si47xx-EVB
4.2.2. Board Discovery Bus Mode
The initialize process can be configured to use either 2-wire or 3-wire bus mode. This can be configured by
selecting File Board Discovery Bus Mode.
This feature is useful when using the Silabs EVB and GUI to control a prototype that is designed to use one bus
mode only.
4.2.3. Function Configuration
For each mode available on the selected EVB, multiple configuration items (Figure 27) will be present to allow for
configuration of the GUI software. It is possible to change these settings to meet testing requirements. The default
configuration of the board when you connect it to the computer is acceptable for most users. After initialization, the
GUI will save and restore these settings whenever the same type of board is connected.
Figure 27. Mode Configuration Items
4.2.3.1. Functions
Currently the UI supports four possible functions. These functions are AM Receiver, FM Receiver, WB Receiver,
and FM Transmitter.
Each function is configured independently from other functions. It is important to configure all functions as desired
as it is possible to have FM Receive boot in digital mode while AM Receive boots in analog mode.
The currently highlighted function row will be the function that is initialized when the Initialize button is selected.
Settings for other functions that are not selected will be saved and used to initialize that function when choosing
another function from the UI main window.
4.2.3.2. Boot Mode
There are two boot modes possible for each function. It is possible for some boot modes to not be available on
some boards.

From Device - This option will use the firmware embedded on the device selected. This is the faster of the two
options.
 From File - This option will use the patch functionality of the device to send firmware from a file stored within the
UI to the device. If using this option, choose the appropriate firmware in the Firmware column for the function
you are configuring.
34
Rev. 0.7
Si47xx-EVB
4.2.3.3. Default Mode
There are two or more default modes possible for each function.

Use Last UI State: When selected, the GUI will restore all settings on the device to the previous settings
configured in the GUI the last time it was closed.
 Use Chip Defaults: When selected, the GUI will use the settings that were default in the firmware on the device.
Only properties related to the correct setting of RCLK (such as frequency and prescaling) and initial tuning
(such as frequency) will be changed. If an error occurs during initialization of a function, choose this setting to
default the GUI settings back to the chip defaults.
 Saved Configuration States: If you have previously saved or imported any configuration states, they will be
listed by name. When one of these is selected, the GUI will restore all settings on the device to the previously
saved settings.
4.2.3.4. Audio Mode
This option allows the user to change between Analog or Digital modes if the board connected supports digital.
Sections 2.1.4, 5, 6, and 7 each document the possible settings in more detail depending on what function is being
configured.
Figure 28 displays the window after the Details button has been pressed which helps with selection of the Audio
Mode by displaying a bitmap of the current audio setting in the dialog.
Figure 28. Expanded Details Dialog
4.2.3.5. Firmware
This selection is only required if "From File" was chosen for the Boot Mode. Use this setting to choose which
firmware will be downloaded to the device. If this item turns red then there is no firmware available for the function
so "From Device" must be chosen as the Boot Mode.
Rev. 0.7
35
Si47xx-EVB
4.2.3.6. Bus Mode
This setting affects all functions that are configured. It allows the device to be booted either in 2-wire or 3-wire
mode.
4.2.3.7. Internal Oscillator
When the "Use XOSCEN" is enabled and the board is configured to use the crystal oscillator, the GUI will boot the
device using the crystal oscillator. This option is only available on devices that support the crystal oscillator option.
4.2.3.8. Auto Boot when UI Opened and only One Board is Connected
When this item is selected, the GUI, when launched, will automatically boot the board if the same board is
connected. If more than one board is connected, the GUI will display the initialization dialog to allow selection of
the board to initialize.
4.3. Switching Functions
After the board has been properly configured for all functions it is possible to switch between functions from the
main UI window using the function buttons provided. Only function buttons will appear for the functions supported
by the device currently running. Figure 29 highlights the buttons used to switch functions from the main screen.
Figure 29. Function Switch Buttons
36
Rev. 0.7
Si47xx-EVB
4.4. State Management
Once the part has been initialized, a State Management option becomes available in the File Menu. This GUI
feature allows the user to save, retrieve, and delete the configuration state which contains the property values.
4.4.1. Save Configuration State
To save the current configuration state, select FileState ManagementSave Current State. The Select
Configuration window shown in Figure 30 will pop up. Enter a name for the configuration state and click OK. The
current state that contains the property values is now saved under the given name. If a state already exists with the
chosen name, the GUI will give you the option of replacing the original state, entering a different name, or
canceling the save.
Figure 30. Naming a Configuration State during Save
4.4.2. Retrieve Configuration State
Once a configuration state for a part has been saved, it will appear in the Default Mode list in the Initialization
window as shown in Figure 31. Select the state you wish to retrieve when initializing the part, and all properties and
the tuning frequency of the saved configuration will be restored.
Figure 31. Saved Configuration State
Rev. 0.7
37
Si47xx-EVB
4.4.3. Delete Configuration State
To discard a saved configuration state, select FileState ManagementDelete State. The Delete Configuration
window shown in Figure 32 will pop up. Select the configuration state you want to delete from the list and click OK.
The deleted configuration state will no longer be available in the Default Mode list of the Initialization window or
available for export.
Figure 32. Selecting Configuration State to Delete
4.4.4. Export Saved State
In addition to saving, retrieving, and deleting the configuration state, the GUI also gives the end user the ability to
export the configuration state to a file. The file can then be imported to installations of the GUI on different
machines to allow multiple users to easily implement the same configuration state. To export a saved configuration
state to a file, select File State ManagementExport Saved State and the Select Configuration window will pop
as shown in Figure 33. Select the configuration state to export and click OK to save the configuration file with a .ini
extension. This configuration file can now be exported to different machines. The name of the saved state is
retained in the file when exported.
Figure 33. Selecting Configuration State to Export
38
Rev. 0.7
Si47xx-EVB
4.4.5. Import Saved State
A saved configuration state can be imported from a .ini file exported by another instance of the GUI. To import a
saved state, select FileState Management Import State File, then browse for and select the desired file. Once
the file has been imported, the saved state will appear in the Default Mode list in the Initialization window. If a state
already exists with the same name as the state in the imported file, the GUI will give you the option of replacing the
original state, choosing a new name for the imported state, or canceling the import from file. The name appearing
in the initialization window will not necessarily be the same as the *.ini file name exported. It will reflect the name of
the original state that was exported.
4.5. Disconnecting the EVB
The GUI provides three methods for disconnecting the device: Closing the GUI, choosing disconnect from the file
menu, or physically disconnecting the device from the PC.
When closing the UI or selecting disconnect from the file menu, the GUI will prompt if the device should be
powered down or not. This prompt allows for further investigation of the device after the GUI has been
disconnected from the EVB. After the board has been disconnected through the File menu, the GUI will save the
current state of the device to disk. This state will be used to power up the device in the same state next time the
board is connected. The GUI will only save the current state if the board is disconnected through the File menu or
the GUI application is closed. If the board is removed from the PC without being disconnected through the File
menu and before the GUI is closed, then all state data will be lost.
Rev. 0.7
39
Si47xx-EVB
5. FM Transmitter GUI
The first Si47xx window is the Initialization window as shown in Figure 34.
Select the FM transmitter function.
As an FM transmitter, there are three audio input settings available:

Analog Input
 Analog to Digital Input
 Digital Input
5.1. Configuring the Si47xx as an FM Transmitter Using Analog Audio Input
This mode configures the Si47xx to receive analog audio input at pins 15 and 16 (LIN and RIN). The user has the
ability to provide analog audio from RCA In connector (J7) or Line In (J19). Set jumpers J5 and J13 accordingly.
Figure 34 shows the configuration setting for analog audio input. Configure the desired parameters in the
initialization screen and then click Initialize. A new window displaying "Initializing FM Transmitter" will appear.
Figure 34. Configuring the Si47xx to Transmit Analog Input
40
Rev. 0.7
Si47xx-EVB
5.2. Configuring the Si47xx as an FM Transmitter Using Digital Audio with Analog Audio
Source
This mode configures the Si47xx to receive digital audio input at pins 13 and 14 (DIN and DFS), but the user still
provides an analog audio source to the EVB. It is useful for a user who wants to test digital input on the Si47xx but
does not have a digital audio source. The analog audio source is converted to digital audio through the CODEC,
which can be configured to output various digital audio formats. Refer to Figure 40, “CODEC Settings Property
Window,” on page 49 to control the CODEC. Configure the desired parameters in the initialization screen and then
click Initialize. A new window displaying "Initializing FM Transmitter" will appear.
Figure 35. Configuring the Si47xx to Transmit Digital Input by Using Analog Source (CODEC)
Rev. 0.7
41
Si47xx-EVB
5.3. Configuring the Si47xx as an FM Transmitter Using Digital Audio with SPDIF Digital
Source
This mode configures the Si47xx to receive digital audio input at pin 13 and 14 (DIN and DFS) when the user has
an SPDIF digital audio source. The SPDIF source is converted to PCM digital audio by the SPDIF translator. Refer
to Figure 41, “SPDIF Settings Property Window,” on page 50 to control the SPDIF translator.
Note: The Si47xx requires the digital audio signal to be present when initializing the part. Therefore, connect the SPDIF IN
signal prior to initializing the part. SPDIF will not be supported on new EVBs as of February 14, 2011. This mode of
operation will not be available in the initialization window for those boards.
Figure 36. Configuring the Si47xx to Transmit Digital Input by Using Digital Source (SPDIF)
42
Rev. 0.7
Si47xx-EVB
5.4. FM Transmitter Main Window
The FM transmitter main window will appear after initialization.
26
1
5
4
2
3
8
7
18
13
9
10
19
14
11
12
17
20
21
15
16
22
24
25
23
6
Figure 37. FM Transmitter Main Window
Table 8. FM Transmitter Main Window Descriptions
#
Description
Range
1 Transmit frequency display. Enter the desired FM transmit frequency in this window.
76–108 MHz
2 Transmit voltage display. Enter the desired FM transmit voltage in this window.
88–120 dBuV
3 Varactor Value. This is an indicator showing the tuning cap value of the Si472x device.
Each number represents 0.25 pF. If the varactor value is manually overwritten in the
property window, the indicator will change from automatic mode to manual mode.
1–191
4 RF on or off. Selecting this checkbox will enable the FM transmit, while turning this button off will disable the FM transmit.
On/Off
5 Pre-Emphasis. Click one of the three buttons to set the pre-emphasis either to Off, 50 µs
or 75 µs.
Off, 50 µs, 75 µs
6 Si472x EVB audio input setting indicator: Analog In/Digital (Analog In to CODEC)/Digital
(SPDIF).
Analog, Digital
CODEC, Digital
SPDIF
7 Presets. Press and hold the desired preset button for 1.5 seconds to program. The current frequency will replace the preset number. Press for less than 1.5 seconds to tune to
the displayed frequency. Presets can also be programmed automatically from the
Receive Power Scan window.
76–108 MHz
8 Pilot Tone Generation. Set to 19 kHz and select "Pilot On" when in stereo mode. Set to
0–19 kHz for and select "Pilot On" for test tone generation.
0–19 kHz
9 Audio Deviation. Enter the desired audio deviation in this window.
0–90 kHz
10 Pilot Deviation. Enter the desired pilot deviation in this window.
0–90 kHz
Rev. 0.7
43
Si47xx-EVB
Table 8. FM Transmitter Main Window Descriptions (Continued)
#
Description
11 RDS Deviation. Enter the desired RDS deviation in this window (Si4711/13/21 only).
Range
0–7.5 kHz
12 Total Deviation. This is an indicator only displaying the sum of the audio, pilot and RDS
deviation. If the total deviation exceeds 75 kHz, the indicator will turn red and a warning
sign is displayed.
0–187.5 kHz
13 Input Mute Left/Right. Selecting this checkbox will mute the Left or Right audio channel.
On/Off
14 Turn on or off the pilot tone for stereo or mono FM transmit mode.
On/Off
15 Turn on or off the RDS transmission (Si4711/13/21 only).
On/Off
16 Modulation On. Selecting this checkbox will modulate the audio, pilot, and RDS signal
according to the audio, pilot, and RDS deviation. De-selecting this checkbox will turn off
modulation for all audio, pilot, and RDS signal and only the carrier will be transmitted.
On/Off
17 Turn on or off the L-R channel for stereo or mono FM transmit mode.
On/Off
18 Turn on or off the compressor for the audio signal.
On/Off
19 Attack time. Set the attack time for the compressor in milliseconds.
0.5–5 ms
20 Release time. Set the release time for the compressor in milliseconds.
100–1000 ms
21 Threshold. Set the threshold for the compressor.
–40 to 0 dBFS
22 Input Gain. Set the compressor gain.
0 to 20 dB
23 Limiter Release Time. Set the limiter release time constant.
(Not available in Si4710-A10).
24 Turn on or off the limiter feature.
0.5,1,2,3,4,5,6,7,8,
9,10,20,30,40,50,
75,100 ms
On/Off
25 Audio Level Indicators. Overmodulation, Limiter, Audio input level below low-level
threshold (silence detection), and Audio input level below high-level threshold (loud
detection). To enable these four indicators, check the Enable Interrupts box. These
indicators are sticky; to clear them, click the Reset button.
—
26 Mode switch buttons to switch between different modes on the device. See section 4 for
more information.
—
44
Rev. 0.7
Si47xx-EVB
5.5. FM Transmitter Settings (Analog Mode) Property Window
FM transmitter settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all FM transmitter properties are also located in WindowPropertiesTX: All. Analog
mode properties will be available if Analog Mode was selected in the initialization window.
Figure 38. FM Transmitter Settings in Analog Mode Property Window
Table 9. FM Transmitter Settings in Analog Mode Property Window Descriptions
Item
Description
Range
Devices
Line Input
Attenuation (k)
The Si47xx has four attenuator settings (636, 416,
301, and 190 mVp). It will tell the maximum audio
input signal that the user can give to the LIN and RIN
input. The attenuator setting will determine the audio
input impedance (LIN and RIN) of the device.
190 mVp,
301 mVpk,
416 mVp,
636 mVpk
All
Maximum Line Input The maximum line input level of the max audio input 0–Line Input Attenuation
Level (mVpk)
signal that the user supplies to the device. This number has to be less than or equal to the attenuation setting. The max line input level will correspond to the
max audio deviation set in the audio deviation window
on the main GUI. Make sure that the actual audio
input signal does not exceed this limit, otherwise the
audio signal will become distorted.
Reference Clock
Frequency (Hz)
This field is used to specify the frequency of the
reference clock. The input to the RCLK pin divided by
the prescaler is the reference clock. The reference
clock must be in the range of 31130 to 34406 Hz.
Rev. 0.7
31130–34406 Hz
All
All
45
Si47xx-EVB
Table 9. FM Transmitter Settings in Analog Mode Property Window Descriptions (Continued)
Item
Description
Range
Devices
Reference Clock
Prescaler
This field is used to specify the prescaler value. The
input to the RCLK pin divided by the prescaler is the
reference clock. The reference clock must be in the
range of 31130 to 34406 Hz.
1–4095
All
Audio Level High
Duration (mSec)
Set the duration for the audio level high before an
interrupt is generated.
0–65535
All
Audio Level High
Threshold (dBFS)
An interrupt will be generated when the audio input
level rises above this threshold for the duration greater
than the Audio Level High Duration setting. This may
also be called loud detection indicator.
–70 to 0
All
Audio Level Low
Duration (mSec)
Set the duration for the audio level low before an interrupt is generated.
0–65535
All
Audio Level Low
Threshold (dBFS)
An interrupt will be generated when the audio input
level falls below this threshold for the duration greater
than the Audio Level Low Distortion setting. This may
be called silence detection indicator.
–70 to 0
All
Automatic: 0,
Manual: 1–191
All
Varactor Capacitor This field allows the user to manually overwrite the
Overwrite
tuning capacitance. A number 0 indicates that the
tuning cap is automatically adjusted. Any number
other than 0 (1 to 191) will indicate that the tuning cap
is manually adjusted.
46
Rev. 0.7
Si47xx-EVB
5.6. FM Transmitter Settings (Digital Mode) Property Window
FM transmitter settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all FM transmitter properties are also located in WindowProperties TX: All. Digital
mode properties will be available if CODED or SPDIF modes was selected in the initialization window.
Figure 39. FM Transmitter Settings in Digital Mode Property Window
Table 10. FM Transmitter Settings in Digital Mode Property Window Descriptions
Item
Description
Reference Clock
Frequency (Hz)
This field is used to specify the frequency of the reference clock. The input to the RCLK pin divided by the
prescaler is the reference clock. The reference clock
must be in the range of 31130 to 34406 Hz.
Reference Clock
Prescaler
This field is used to specify the prescaler value. The
input to the RCLK pin divided by the prescaler is the
reference clock. The reference clock must be in the
range of 31130 to 34406 Hz.
Digital Format
Sets I2S of left justified digital format.
Digital Sample
Precision
Select the precision of the digital audio input.
Digital Sample
Rate (Hz)
Sets the DFS digital sample rate. Must be set to 0 Hz
before DCLK/DFS is removed.
Rev. 0.7
Range
Applicable
Devices
31130–34406 Hz
All
1–4095
All
Left-Justified, I2S,
DSP (MSB on first
DCLK), or DSP
(MSB on second
DCLK)
All except
Si4710-A10
8, 16, 20, 24 bits
All
0, 32000–
48000 Hz
All except
Si4710-A10
47
Si47xx-EVB
Table 10. FM Transmitter Settings in Digital Mode Property Window Descriptions (Continued)
Item
Description
Range
Applicable
Devices
Digital Mono
Mode Enable
Select between Digital Stereo or Mono.
On/Off
All
Digital DCLK
Falling Edge
Select between using rising edge or falling edge of
DCLK when sampling Digital Input (DIN) data.
On/Off
All
Audio Level Low An interrupt will be generated when the audio input
Threshold (dBFS) level falls below this threshold for the duration greater
than the Audio Level Low Distortion setting. This may
be called silence detection indicator.
–70 to 0
All
Audio Level Low
Duration (mSec)
0–65535
All
Audio Level High An interrupt will be generated when the audio input
Threshold (dBFS) level rises above this threshold for the duration greater
than the Audio Level High Duration setting. This may
also be called loud detection indicator.
–70 to 0
All
Audio Level High Set the duration for the audio level high before an
Duration (mSec) interrupt is generated.
0–65535
All
Automatic: 0
Manual: 1–191
All
Set the duration for the audio level low before an
interrupt is generated.
Varactor Capacitor This field allows the user to manually overwrite the
Overwrite
tuning capacitance. 0 indicates that the tuning cap is
automatically adjusted. Any number other than 0 (1 to
191) will indicate that the tuning cap is manually
adjusted.
48
Rev. 0.7
Si47xx-EVB
5.7. CODEC Settings
In addition to other digital mode properties, a category of CODEC settings may configured by selecting
WindowPropertiesCODEC Settings if CODEC mode was selected in the initialization window.
Figure 40. CODEC Settings Property Window
Table 11. CODEC Settings Property Window Descriptions
Item
Description
Range
Misc.
CODEC Precision
16, 20, 24 bits
Select the CODEC digital audio output precision.
CODEC Output Format Select the CODEC digital audio format between I S, Left Justi- Left-Justified, I2S, DSP
fied, DSP (MSB on first DCLK), or DSP (MSB on second DCLK). (MSB on first DCLK), or
DSP (MSB on second
DCLK)
2
CODEC Sampling Rate Select the sample rate of the CODEC digital audio output.
CODEC Channel Swap Select whether the CODEC digital output L-R data is normal or
swapped.
CODEC Invert Clock
Select between using rising edge or falling edge of DCLK when
sampling Digital Input (DIN) data.
Rev. 0.7
32 or 48 kHz
On/Off
On/Off
49
Si47xx-EVB
5.8. SPDIF Settings
In addition to other digital mode properties, a category of SPDIF settings may be configured by selecting
WindowPropertiesSPDIF Settings if SPDIF mode was selected in the initialization window.
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. These properties will not be available through the
GUI in conjunction with those boards.
Figure 41. SPDIF Settings Property Window
Table 12. SPDIF Settings Property Window Descriptions
Item
Description
Range
Misc.
SPDIF Invert Clock
Select between using rising edge or falling edge of DCLK when
sampling Digital Input (DIN) data.
SPDIF Output Format Select the SPDIF digital audio format between I2S or Left Justified.
50
Rev. 0.7
On/Off
Left-Justified or I2S
Si47xx-EVB
5.9. FM Transmitter Receive Power Scan Window
The Receive Power Scan window enables the user to scan the entire FM band to find one or more candidate
channels on which to transmit, where candidate channels are defined as those with the lowest received power.
Selecting WindowPower Scan will launch the Receive Power Scan Window as shown in Figure 42. The band
and channel spacing can be selected and the number of regions can be set to return one to ten candidate
channels. The number of channels to average can be set to 1, 3, 5, or 7. Selecting “To Presets “will save the
candidate channels to the GUI presets. Refer to "AN307: Si4712/13/20/21 Receive Power Scan" for additional
information on the RPS feature and algorithm.
Figure 42. Receive Power Scan Window
Rev. 0.7
51
Si47xx-EVB
5.10. FM Transmitter Radio Data Service (RDS)
The RDS/RBDS feature is available with the Si4711/13/21. This user guide assumes that the user is already
familiar with the RDS/RBDS standard. If necessary, the user may refer to the following documents to become
familiar with the RDS/RBDS standard.

United States RBDS Standard by National Radio Systems Committee, April 9, 1998.
 RDS Universal Encoded Communication Protocol Version 5.1 by European Broadcasting Union, August 1997.
 Silicon Labs “AN243: Using RDS/RBDS with the Si4701/03.”
In order for the user to transmit RDS, check the RDS On box. Failure to turn on RDS means that the RDS data will
not be transmitted. The following picture illustrates the RDS On box that should be turned on.
Figure 43. Turning RDS On in the FM Transmitter Main Window
After the RDS transmission is enabled, click on WindowRDS Transmit Data to go to the RDS Transmit Data
screen. This window allows the user to configure RDS data to be transmitted and also allows the user to gain
insight to the Si4711/13/21 RDS capability.
52
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Figure 44. RDS Transmit Window
Table 13. RDS Transmit Window Descriptions
Item
Description
General
RDS/RBDS Selection
Select either RDS format (Europe) or RBDS format (US).
Program Type (PTY)
Select the available Program Type (PTY) from the pulldown menu.
PTY Dynamic
PI
Select whether the PTY will be dynamic or static.
Enter Program Identification (PI) code here.
Program Service
Program Service Messages Enter up to 12 different Program Service (PS) Messages. Each PS consists of a
maximum 8 characters. Messages are ordered left to right, top to bottom.
Load Msgs
Repeat Count
Message Count
Mix
Load the PS messages into the device.
Enter how many time each PS will be repeated before sending the next PS.
Enter how many messages of the loaded PS that will be transmitted.
Select the mix percentage between transmitting the Program Service or Buffers.
Alternate Frequency
Part of RDS Group Type 0 (PS): Enter Alternate Frequency if it is available.
Artificial Head
Part of RDS Group Type 0 (PS): Enter whether Artificial Head is On or Off.
Rev. 0.7
53
Si47xx-EVB
Table 13. RDS Transmit Window Descriptions
Item
Stereo
Audio Compression
Description
Part of RDS Group Type 0 (PS): Enter whether the transmitted audio is Stereo or
Mono.
Part of RDS Group Type 0 (PS): Enter whether the Audio Compression is On or Off.
Traffic Program
Part of RDS Group Type 0 (PS): Enter whether Traffic Program is available or not.
Traffic Announcement
Part of RDS Group Type 0 (PS): Enter whether Traffic Announcement is available or
not.
Speech
Part of RDS Group Type 0 (PS): Enter between Speech or Music transmission.
Buffers
Radio Text
Radio Text: A/B Flag
Enter the RDS Group Type 2 Radio Text (RT) messages that will be loaded into
either the circular or FIFO buffer.
Part of RDS Group Type 2 (RT): Enter whether the A/B Flag is set or not in entering
the RT. This A/B Flag will tell the receiver to clear the display when the flag toggles
from one state to the other.
Radio Text: Add to Circular Add the RT messages that are entered into the GUI circular buffer queue.
Radio Text: Add to FIFO
Add the RT messages that are entered into the GUI FIFO buffer queue.
Manual Group Entry: B
Enter manual RDS entry block B. With this window, you can transmit all RDS Group
Types 0 through 15.
Manual Group Entry: C
Enter manual RDS entry block C. With this window, you can transmit all RDS Group
Types 0 through 15.
Manual Group Entry: D
Enter manual RDS entry block D. With this window, you can transmit all RDS Group
Types 0 through 15.
Manual Group Entry: Add to Add the RDS manual entry values into the GUI circular buffer queue.
Circular
Manual Group Entry: Add to Add the RDS manual values into the GUI FIFO buffer queue.
FIFO
Circular
Indicator showing the GUI circular buffer queue.
Circular: Size (Blocks)
Indicator showing the size (in blocks) of the circular buffer. The total size of the
buffer is 128, which is shared between the circular and FIFO buffers. To adjust the
size, change the size in the FIFO buffers.
Circular: Delete Group
Delete the currently selected group in the GUI circular buffer queue.
Circular: Clear Buffer & Send Clear the circular buffer on the device and send the messages in the GUI circular
buffer queue to the device.
FIFO
FIFO: Size (Blocks)
FIFO: Add Time
FIFO: Delete Group
Indicator showing the GUI FIFO queue.
Indicator showing the size (in blocks) of the FIFO buffer. Adjusting the size of the
FIFO will also adjust the size of the circular buffer. The total of those two buffers is
128 blocks.
This will get the current time and format it into RDS Group Type 4 Clock & Time
(CT), and add it to the GUI FIFO buffer queue.
Delete currently selected group in the GUI FIFO buffer queue.
FIFO: Clear Buffer & Send Clear the FIFO buffer on the device and send the message in the GUI FIFO buffer
queue to the device.
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Si47xx-EVB
There are 16 different group types in the RDS/RBDS standard, and for every group the following information is
always transmitted:
1. Program Identification (PI)
2. Program Type (PTY)
The GUI makes it easy to send data in three of the following group types:
1. Group Type 0: Program Service (PS)
2. Group Type 2: Radio Text (RT)
3. Group Type 4: Clock Time (CT)
It is possible to send data in the other group types, but the user has to manually enter the data in hexadecimal
code.
Because of the complexity of the RDS/RBDS standard, the explanation of the RDS Transmit Data window is
divided into three sections: Basic, Intermediate, and Advanced.
Rev. 0.7
55
Si47xx-EVB
5.10.1. Basic
The RDS Transmit Window is divided into three categories:
1. General
2. Program Service
3. Buffers
In the basic section, we will cover two out of the three categories: the General and Program Service. In the General
category, the user can set the PI and PTY data. In the Program Service, the user can set the PS data (Group Type
0). The following diagram shows a step-by-step explanation:
1
2
3
4
5
Figure 45. Basic RDS Message Illustration
1. First select whether you want to transmit in RDS format (Europe) or RBDS format (US).
2. Type in the Program Identification in this field. Program Identification is a 16-bit code assigned to an individual station.
3. Select the Program Type in the pull down menu here. Some examples include news, information, sports, talk, rock, etc.
4. Enter the Program Service (PS) in the boxes provided. You can enter a maximum of 12 different PS messages, in which
each PS message can contain a maximum of 8 characters.
a. Repeat Count: Enter how many times you want each PS message to be transmitted before sending the next PS
message.
b. Message Count: Enter how many of the 12 PS messages that you actually want to transmit.
c. Mix: Select 100 percent.
5. Click Send Message button here. Now the RDS will transmit the PS message along with the PI and PTY. You should see
these data in your RDS receiver.
56
Rev. 0.7
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5.10.2. Intermediate
In the intermediate section, we will cover the buffers category of sending the RDS data with the device, in particular
we will send Group Type 2 (Radio Text) and Group Type 4 (Clock Time).
The following diagram shows a step-by-step procedure to send the buffers data in addition to the General and
Program Service data covered in the basic section.
1
2
3a
3
5
6
4
Figure 46. Intermediate RDS Message Illustration
1. Select the Mix percentage that you want between transmitting the data in Program Service and the data in the Buffers. A mix
percentage of 100% means that you will always transmit the PS message regardless of what is contained in the Buffers,
whereas a mix percentage of 0% means that you will always transmit the data in the Buffers regardless of what is contained
in the PS. If the buffers are empty, the PS messages will be transmitted all the time regardless of the mix percentage.
2. Enter the Radio Text message that will be transmitted. After entering the RT message, click either the "Add to Circular"
button or the "Add to FIFO" button. The RT message will be encoded according to the RDS Group Type 2 rule.
a. Clicking "Add to Circular" button means that you add the RT message into the GUI Circular Buffer queue. Note that the
message itself has not been uploaded into the Circular Buffer inside the device until the Clear Buff & Send is clicked.
b. Clicking "Add to FIFO" means that you upload the RT message into the GUI FIFO Buffer queue. Note that the message
itself has not been uploaded into the FIFO Buffer inside the device until the Clear Buff & Send is clicked.
3. Enter the size of the FIFO that you want here. The device buffer has a total of 128 blocks, which is shared by the circular
buffer and the FIFO. Therefore, the circular buffer size (shown in 3a) will be the remainder of the 128 blocks minus the FIFO
size.
4. Clicking this "Clear Buff & Send" button will upload the message from the GUI Circular Buffer queue into the Circular Buffer
inside the device. The Circular Buffer on the part will repeatedly send the message contained in the buffer. Note that the
messages in the circular buffer will be transmitted only if the PS Mix value is set to anything other than 100%.
5. Clicking the "Add Time" button here will add the current time as a RDS Group Type 4 message to the GUI FIFO Buffer
queue.
6. Clicking the "Clear Buff & Send" button will upload the message from the FIFO Buffer Indicator Window into the FIFO Buffer
inside the device. The FIFO Buffer on the part will only send the messages contained in the buffer once. A good example of
using FIFO buffer is when you want to send the time data. Time is something that occurs only once, so it will not be
beneficial to upload time to the circular buffer and transmit it continuously. Refer to step 5 for information on sending time
data. Note that the messages in the FIFO buffer will be transmitted only if the PS Mix value is set to anything other than
100%.
Rev. 0.7
57
Si47xx-EVB
5.10.3. Advanced
In the advanced section, we will cover the remaining RDS topics.
1
2
3
4
5
8
6
7
9
Figure 47. Advanced RDS Sending Illustration
1. Dynamic: This tells whether the PTY code is static or dynamic.
2. Alternate Frequency: This provides the ability to inform the receiver of a single alternate frequency. This field is transmitted
along with the Group Type 0 (PS).
3. Miscellaneous bits in Group Type 0 (PS):
a. Artificial Head: 0 = Not Artificial Head; 1 = Artificial Head
b. Stereo: 0 = Mono; 1 = Stereo
c. Audio Compressor: 0 = Not compressed; 1 = Compressed
d. Traffic Program (TP): 0 = No TP; 1 = TP
e. Traffic Announcement (TA): 0 = No TA; 1 = TA
f.
Speech: 0 = Speech; 1= Music
4. A/B Flag: This is an important flag in the RDS Group Type 2 (RT). Checking this box when a Radio Text is uploaded means
that the RT is uploaded with the flag set. Un-checking this box when an RT is uploaded means that the flag is not set. This
flag tells the receiver that when the flag toggles from set to reset or vice versa, the receiver will clear the display before
showing the next RT.
5. Manual Group Entry: Use this box to upload the RDS data manually. You can use this box to upload messages from the
Group Type for which the GUI does not have encoding support. For these messages, the user must encode the messages
into hexadecimal code.
6. Circular Buffer Indicator: This displays the message that gets uploaded into the Circular Buffer in hexadecimal code. This
can be useful to see how the Group Type 0 (PS), Type 2 (RT), and Type 4 (CT) is encoded into RDS data.
7. Delete Circular Buffer Group: This deletes a group that is selected in the Circular Buffer Indicator.
8. FIFO Buffer Indicator: This displays the message that gets uploaded into the FIFO buffer in hexadecimal code.
9. Delete FIFO Buffer Group: This deletes a group that is selected in the FIFO Buffer Indicator.
58
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Si47xx-EVB
5.11. FM Transmitter Register Map Window
The register map window allows the user to manually program the device by sending commands to the chip. Refer
to “AN332: Si47xx Programming Guide” to manually program the device. Clicking on WindowRegister Map will
launch the Register Map Window as shown in Figure 48.
Figure 48. FM Transmitter Register Map Window
Rev. 0.7
59
Si47xx-EVB
6. FM Receiver GUI
The first Si47xx window is the Initialization window as shown in Figure 49.
Select the FM receiver function.
As an FM receiver, analog audio out is available on pins 13 and 14.
6.1. Configuring the Si47xx as an FM Receiver
Select the device, busmode, firmware revision, and initial part settings and then click Initialize. A new window
displaying "Initializing FM Receiver" will appear. If you check “Use XOSCEN,” the daughtercard crystal and on-chip
oscillator will be used to clock the Si47xx. Crystal operation is not supported on Si474x-EVB (that supports Si4740/
41/42/43/44/45) and Si4749-EVB. You can use the EVB Audio Settings drop down box to select the audio mode
used by the Si47xx part. See Section 2.1.4 of the Si47xx-EVB User’s Guide for more information on this setting.
The Si4749 can also be programmed as an RDS only tuner. This selection is available through the EVB Audio
Setting drop down box as well.
Note: As of February 2011, SPDIF is not supported on new EVBs. Modes of operation requiring the SPDIF will not be available
in the initialization window for those boards.
Figure 49. FM Receiver Initialization
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Si47xx-EVB
6.2. FM Receiver Main Window
The FM receiver main window will appear after initialization.
11
3
2
5
4
6
Figure 50. FM Receiver Main Window
Figure 51. FM Receiver Main Window for Si474x
Rev. 0.7
61
Si47xx-EVB
Table 14. FM Receiver Main Window Descriptions
#
Name
Descriptions
1
Tune/Seek
Tune Down (<), Tune Up (>) buttons execute a single channel step according to the
channel spacing setting. The channel spacing setting can be set in the property window.
Seek down (<<), Seek Up (>>) buttons execute a seek up or down to the next received
FM signal meeting or exceeding the seek settings within the selected band. The seek
setting Received Signal Strength Indicator (RSSI) and Signal to Noise Ratio (SNR)
threshold can be set in the property window.
2
Freq Slider,
AFC Rail Indicator,
Mono/Stereo
Indicator,
Pilot Indicator,
Stereo Blend
Indicator,
Valid Indicator
The Frequency Display indicates the frequency in MHz. To change the Frequency, drag
the pointer in the Frequency Slider Bar to the desired frequency. The frequency may also
be changed by changing the value in the display.
AFC Rail indicator will be red if the tuned frequency is in an AFC rail state, otherwise the
indicator will be grey.
The Mono/Stereo indicator will switch to stereo if the blend ratio is greater than 0 and the
Pilot is present.
The Pilot indicator will be green if the received FM signal has a pilot signal.
The Stereo Blend indicator will be green if the part goes into linear blend between stereo
and mono. Full mono is indicated by 0% and full stereo is indicated by 100%.
The Valid indicator will be green if the FM frequency meets the RSSI and SNR seek
settings in the property window.
3
Volume, Mute
Select the Si47xx output volume (0-63) by moving the slider bar pointer. Press the Mute
button to mute the Si47xx radio. If the radio is muted, the button will be red. Press the
Mute button again to remove the muting.
4
Auto Scan,
To Preset,
Select Stn
The Auto Scan button will find all the stations with an RSSI and SNR above the seek
settings in the property window. After the scan is completed, the number of stations
found will be displayed and each station will be available in the drop down box. Also, a
red indicator mark will be displayed on the Frequency Slider Bar (2) for each station. The
"To Presets" Button will program the preset buttons (5) with the 12 strongest stations.
5
Presets
Press the desired button to tune to the frequency displayed on the button. To store a new
value to the preset button, tune to the desired frequency and then press and hold the
desired button for 1.5 seconds. The button will then change to indicate the stored
frequency.
6
RSSI/SNR/
The RSSI indicator displays the RSSI of the signal in dBuV.
Multipath/Stereo/HiThe SNR indicator displays the SNR of the received signal in dB.
Cut/SoftMute
The Multipath indicator will be green if Multipath is detected. This indicator is only
available in Si474x products. Refer to Figure 59.
The Stereo Blend indicator will be green if the part goes into linear blend between stereo
and mono. Full mono is indicated by 0% and full stereo is indicated by 100%.
The Hi-Cut indicator will indicate the percentage of hi-cut being applied to the audio
signal. This indicator is only available in Si4742/43/44/45 products. Refer to Figure 59.
The Soft Mute indicator will indicate the amount of attenuation in dB applied to the audio
signal.
62
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Si47xx-EVB
6.3. FM Receiver Settings Property Window
FM receiver settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all FM receiver properties are also located in WindowPropertiesFM: All.
Figure 52. FM Receiver Settings Property Window
Rev. 0.7
63
Si47xx-EVB
Figure 53. FM Receiver Setting Property Window for Si474x (1 of 2)
64
Rev. 0.7
Si47xx-EVB
Figure 54. FM Receiver Setting Property Window for Si474x continued (2 of 2)
Rev. 0.7
65
Si47xx-EVB
Table 15. FM Receiver Settings Property Window Descriptions
Items
Range
Applicable Devices
Larger values provide slower attack
and smaller values provide faster attack.
4–248
Si474x
AGC Index
If AGC override is set to “ON,” this property
will determine the AGC setting.
0–26
All
AGC Override
If set to “ON,” the AGC property will be used
to set the value of the AGC. If set to “OFF,”
the AGC setting will be automatically
determined by the part.
ON/OFF
All
4–248
Si474x
50 µs, 75 µs
All except Si4749
AGC Attack Rate
Description
AGC Release Rate Larger values provide slower
release and smaller values provide faster
release.
De-emphasis
Selects de-emphasis of 50 µs or 75 µs.
Reference Clock
Frequency (Hz)
This field is used to specify the frequency of
the reference clock. The input to the RCLK
pin divided by the prescaler is the reference
clock. The reference clock must be in the
range of 31130 to 34406 Hz.
31130–
34406 Hz
All
Reference Clock
Prescaler
This field is used to specify the prescaler
value. The input to the RCLK pin divided by
the prescaler is the reference clock. The
reference clock must be in the range of
31130 to 34406 Hz.
1–4095 Hz
All
ON, OFF
Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
I2S, Left-Justified, DSP
Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
ON, OFF
Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Digital DCLK Falling ON uses falling edge of DCLK for sampling.
Edge
Digital Format
Format of digital audio output.
Digital Mono Mode ON enables mono in digital audio output.
Enable
66
Rev. 0.7
Si47xx-EVB
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items
Range
Applicable Devices
8-bit, 16-bit, 20bit, 24-bit
Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Digital Sample Rate DFS sample rate for digital input signal.
Hz
Recommended values are: 32 kHz,
44.1 kHz, or 48 kHz. Over-sampling rate
must be set in order to satisfy a minimum
DCLK of 1 MHz. Sample rate must be set to
0 before DCLK/DFS is removed.
0, 32000–
48000 Hz
Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Hi-Cut Attack Rate Set the rate at which hi-cut lowers the cutoff
frequency. If set to 0, hi-cut attack is
disabled.
0 - 32767
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Digital Sample
Precision
Description
Digital audio output bit precision.
Hi-Cut Cutoff Max
Frequency
Sets the maximum audio transition
frequency bandwidth.
Disabled, 2, 3, 4,
5, 6, 8, and
11 kHz
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut Cutoff Min
Frequency
Sets the minimum band limit transition
frequency for hi-cut.
Disabled, 2, 3, 4,
5, 6, 8, and
11 kHz
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
0 -100
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
0 -100
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
0 - 32767
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut Multipath End Sets the multipath level at which hi-cut
Threshold
reaches maximum limit.
Hi-Cut Multipath
Trigger Threshold
Sets the multipath level at which hi-cut
begins to band limit.
Hi-Cut Release Rate Set the rate at which hi-cut increases the
cutoff frequency. If set to 0, hi-cut release is
disabled.
Rev. 0.7
67
Si47xx-EVB
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items
Description
Range
Applicable Devices
Hi-Cut SNR High
Threshold
Sets the SNR level at which hi-cut begins to
band limit.
0 – 127 dB
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut SNR Low
Threshold
Sets the SNR level at which hi-cut reaches
maximum band limit.
0–127 dB
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
125–219 µs
Si4742/43/44/45
Noise Blanker Delay Delay in microseconds before applying
noise blanking to the original samples.
Noise Blanker
Detect Threshold
Sets the threshold for detecting impulses in
dB above the noise floor. If set to 0, impulse
noise blanking is disabled.
0 – 90 dB
Si4742/43/44/45
Noise Blanker IIR
Filter
Sets the cut-off frequency for the low pass
filter that is used for noise floor estimation in
noise blanker detection.
300–1600
Si4742/43/44/45
Interval original samples are replaced by
interpolated clean samples.
8 – 48 µs
Si4742/43/44/45
100 – 6400 Hz
Si4742/43/44/45
Headphone or
short antenna
Si4704/05/06/20/21 only
Noise Blanker
Interval
Noise Blanker Rate Maximum noise blanking rate.
Antenna Type
Receive antenna selection.
Channel Filter
Si4706, Si4749, Si4704/05/
Selects the channel filter to be used before
Automatic,
demodulation.
110 kHz, 84 kHz, 30/31/34/35/84/85-D50 and
later
60 kHz, and
40 kHz
Band
Frequency band
Seek Band Bottom The lower frequency limit for the seek
(MHz)
function. This is set automatically by the
GUI based on band and spacing selection.
68
Rev. 0.7
US/Europe:
87.5–108 MHz
Japan: 76–
90 MHz
Japan Wide: 76–
108 MHz
All
US/Europe:
87.5 MHz
Japan: 76 MHz
Japan Wide:
76 MHz
All
Si47xx-EVB
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items
Description
Range
Applicable Devices
Seek Band Top
(MHz)
The upper frequency limit for the seek
function. This is set automatically by the
GUI based on band and spacing selection.
US: 107.9 MHz
(200 kHz
spacing)
Europe:
108 MHz
(100 kHz
spacing)
Japan: 90 MHz
Japan Wide:
108 MHz
All
Max Tune Error
(kHz)
Selects the maximum tuning frequency
error before the AFC rail indicator is set.
0–255 kHz
All
Stop at limit or
wrap at limit
All
The seek RSSI threshold level used for
seek and scan functions.
0–255 dB
All
The seek SNR threshold level used for seek
and scan functions.
0–255 dB
All
Channel spacing
50, 100, or
200 kHz
All
Seek Mode
Seek RSSI
Threshold (dBuV)
Seek SNR
Threshold (dB)
Spacing
Select between stopping the seek at the
band limits or wrapping at the band limits to
return to the starting frequency.
Soft Mute Attack
Rate
(dB/s)
Sets the attack rate for entering soft mute.
1–31999 dB/s
Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Soft Mute
Attenuation Slope
(dB/dB)
Soft mute attenuation slope specifies the
slope of the attenuation curve when the
signal SNR is below the soft mute SNR
threshold. It is specified as dB/dB where the
attenuation applied is simply the value
specified here times the amount the signal
SNR is below the threshold.
1–63
Si4704/05/06/3x-C40 and
later, Si4740/41/42/43/44/45
0–31 dB,
0 = disable soft
mute
All except Si4749
1–31999 dB/s
Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Soft Mute Max
Attenuation (dB)
Maximum attenuation for soft mute.
Soft Mute Release Sets the release rate for leaving soft mute.
Rate
(dB/s)
Soft Mute SNR
Threshold (dB)
SNR threshold level used to engage soft
mute.
0–15 dB
All except Si4749
Soft Mute Rate
Selects the soft mute rate.
1–255 dB
Si4706/07/20/21/84/85-B20
and earlier,
Si4704/05/30/31/34/35-C40
and earlier
Rev. 0.7
69
Si47xx-EVB
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items
Description
Range
Applicable Devices
Blend Multipath
Attack Rate
Attack rate associated with multipath when
adjusting blend. If set to 0, attack would be
disabled.
0–32767
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Blend Multipath
Mono Threshold
Multipath input level above which the tuner
blends into full mono.
0–100
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Blend Multipath
Release Rate
Release rate associated with multipath
when adjusting blend. If set to 0, release
would be disabled.
0–32767
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
0–100
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Blend RSSI Attack Attack rate associated with RSSI when
Rate
adjusting blend. If set to 0, attack would be
disabled.
0–32767
Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Blend RSSI Mono
Threshold (dB)
0–127 dB
Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
0–32767
Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Blend RSSI Stereo RSSI level above which the tuner blends
Threshold (dB)
into full stereo.
0–127 dB
Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Blend SNR Attack
Rate
Attack rate associated with SNR when
adjusting blend. If set to 0, attack would be
disabled.
0–32767
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later ,
Si4730/31/34/35/84/85-D50
and later
Blend SNR Mono
Threshold (dB)
SNR level below which the tuner blends into
full mono.
0–127 dB
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later ,
Si4730/31/34/35/84/85-D50
and later
Blend Multipath
Stereo Threshold
Multipath input level below which the tuner
blends into full stereo.
RSSI level below which the tuner blends
into full mono.
Blend RSSI Release Release rate associated with RSSI when
Rate
adjusting blend. If set to 0, release would be
disabled.
70
Rev. 0.7
Si47xx-EVB
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items
Description
Range
Applicable Devices
0–32767
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later ,
Si4730/31/34/35/84/85-D50
and later
0–127 dB
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later ,
Si4730/31/34/35/84/85-D50
and later
Stereo Blend Mono RSSI threshold below which the tuner
Threshold (dB)
blends into full mono.
0–127 dB
Si4704/05/1x/2x/3x-C40 or
earlier, and Si4706-B20
Stereo Blend Stereo RSSI threshold above which the tuner
Threshold (dB)
blends into full stereo.
0–127 dB
Si4704/05/1x/2x/3x-C40 or
earlier and Si4706-B20
Blend SNR Release Release rate associated with SNR when
Rate
adjusting blend. If set to 0, release would be
disabled.
Blend SNR Stereo
Threshold (dB)
SNR level above which the tuner blends
into full stereo.
Rev. 0.7
71
Si47xx-EVB
6.4. CODEC and SPDIF Settings
Si47xx-EVB baseboard has a Codec and an SPDIF translator for digital audio output. For tuners with digital audio
option, you can set properties for the Codec and SPDIF through the GUI. These settings can be used with AM or
FM tuners that have digital audio enabled.
Select WindowPropertiesCODEC and SPDIF Settings.
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. SPDIF properties will not be available through the
GUI in conjunction with those boards. CODEC properties will be available through WindowPropertiesCODEC
Settings.
Figure 55. CODEC and SPDIF Settings Window
Table 16. CODEC and SPDIF Settings Windows Descriptions
Items
Description
Range
Misc.
72
Codec Precision
Precision of the CODEC on baseboard in bits.
16-bit, 20-bit, 24-bit
Codec Output Format
Format of audio output through the Codec.
I2S, Left-Justified, DSP(MSB
on 1st DCLK), DSP(MSB on
2nd DCLK)
Codec Sampling Rate
Sampling rate for the Codec in kHz.
32 kHz, 48 kHz
Codec Channel Swap
Determines if channels need to be swapped on the
Codec.
ON, OFF
Codec Invert Clock
ON inverts the digital clock.
ON, OFF
SPDIF Output Format
Format of audio output through the SPDIF.
I2S, Left-Justified
SPDIF Invert Clock
ON inverts the digital clock.
ON, OFF
Rev. 0.7
Si47xx-EVB
6.5. FM Receiver RDS Window
The FM receive RDS window allows the user to view program service, program type, PI code, radio text, enhanced
radio text, radio text plus, clock, group error rate, sync time and display times, an alternate frequency list, and
group statistics. Select WindowRDS Receive Data. Click on Radio Text Plus (RT+) to get the RT+ class and item
information.
2
1
6
4
3
7
5
8
Figure 56. FM Receiver Settings RDS Window
Rev. 0.7
73
Si47xx-EVB
Table 17. FM Receiver Settings RDS Window Descriptions
#
1
Items
Description
Radio Data Service PS: Program Service Indicator (8 characters).
RT: Radio Text Indicator (64 characters).
eRT: Enhanced Radio Text Indicator
CT: Clock Indicator showing time, day, and date.
Group Error Rate indicates the percentage of uncorrectable groups received.
PTY: Program Type Indicator
PI: PI Code Indicator
2
Sync Times
3
Indicates that RDS is synchronized.
5
RDS
Synchronization
Indicator
Alternate
Frequency
Indicator
Group Counters
6
Block Counters
Provides the block error rates after tune and after RDS Sync.
After Tune Error Rate: After tune (STC interrupt), the ideal number of blocks the FM
tuner should have received is calculated. Also, the number of accepted blocks and
errors are calculated.
Error Rate = number of errors / number of ideal blocks after tune.
After Sync Error Rate: After RDS Sync (RDS interrupt), the ideal number of blocks the
FM tuner should have received is calculated. Also, the number of accepted blocks and
errors are calculated.
Error Rate = number of errors / number of ideal blocks after sync
Because it usually takes 100~200ms for the FM tuner to synchronize to RDS data (STC
interrupt always comes before RDS interrupt), "After Tune Error Rate" will always be
greater than "After Sync Error Rate." After a long time, both error rates should
consolidate at similar levels.
4
7
Reset
8
Radio Text Plus
74
Time required to synchronize, display radio text, and display program service.
When present, shows a list of alternate frequencies. Alternate frequency methods A and
B are supported.
Provides the total number and percentage breakdown of group types 0–15, A/B. To view
this information, select WindowRDS Group Counters. Please refer to Figure 57.
Resets the block counter numbers.
Radio Text Plus (RT+) Class and Item Information Indicator
Rev. 0.7
Si47xx-EVB
Figure 57. RDS Group Counters Window
Rev. 0.7
75
Si47xx-EVB
6.6. FM Receiver RDS Settings
RDS settings are configured by selecting WindowPropertiesFM Receiver RDS Settings.
Figure 58. FM Receiver RDS Settings Window
76
Rev. 0.7
Si47xx-EVB
Table 18. FM Receiver RDS Settings Window Descriptions
Item
Description
Range
Misc.
RDS State
Enables and disables RDS.
On, Off
RDS Error Checking (RT and PS)
Selects GUI error checking level.
Minimum displays text as received.
Mid-range requires two duplicate
buffers before displaying text.
Maximum requires two duplicate
buffers and also ignores the A/B
flag.
Minimum, Mid-Range, Maximum
RDS Program Type Decode
Selects RDS or RBDS program type RDS, RBDS
decoding.
RDS Text Decoding*
Selects text decoding mode.
RDS Group Filter Mode
Simple, Verbose (Group B Corrected
Selects group filter mode. Simple
mode displays a group as long as all Only), Verbose (Group B
Uncorrected), Strict
blocks are correctable. Verbose
(Group B Uncorrected) mode
displays a group even if one or more
blocks is uncorrectable. Verbose
(Group B Corrected) displays a
group as long as block B is
correctable, even if blocks A, C, or D
are uncorrectable. Strict mode
displays a group only if there are no
errors in any block.
RDS Block A Error Level
Sets the Block A error level above
which the entire RDS group will be
discarded.
No Block Errors
1 to 2 errors corrected
3 to 5 errors corrected
Uncorrectable
RDS Block B Error Level
Sets the Block B error level above
which the entire RDS group will be
discarded.
No Block Errors
1 to 2 errors corrected
3 to 5 errors corrected
Uncorrectable
RDS Block C Error Level
Sets the Block C error level above
which the entire RDS group will be
discarded.
No Block Errors
1 to 2 errors corrected
3 to 5 errors corrected
Uncorrectable
RDS Block D Error Level
Sets the Block D error level above
which the entire RDS group will be
discarded.
No Block Errors
1 to 2 errors corrected
3 to 5 errors corrected
Uncorrectable
ASCII, Big 5 (Traditional Chinese),
Default (Use system code page),
UTF-8, Unicode
*Note: The RDS character libraries are documented in Annex E of CENELEC EN 50067: 1998.
Rev. 0.7
77
Si47xx-EVB
6.7. FM UI Settings
Figure 59. FM UI Settings Property Window
Table 19. FM UI Settings Property Window Descriptions
Hems
Description
Range
Misc.
0.2–4.0 seconds
Update Rate (sec)
The time span when the UI gets status information
from the part.
Scan Time 1 (sec)
In log band scan, the time between seeking and
retrieving data from the UI.
1–10 seconds
Scan Time 2 (sec)
In log band scan, the time it takes the RDS data to
populate, if RDS is available.
1–10 seconds
Note: UI settings window is common to all EVBs.
78
Rev. 0.7
Si47xx-EVB
6.8. FM Receiver RSSI/SNR Graph Window
The RSSI/SNR Graph Window allows the user to plot RSSI and SNR across the FM band. Bitmap data can be
saved to file by selecting FileSave as Bitmap and tabulated data can be saved to file by selecting FileSave to
.csv.
1
3
2
4
5
6
Figure 60. FM Receiver RSSI/SNR Graph Window
Table 20. FM Receiver RSSI/SNR Graph Window Descriptions
#
Items
Description
1
RSSI/SNR Graph
2
Line / Bar
3
Draw
4
Seek Threshold
(RSSI/SNR)
Draw the RSSI and/or SNR seek threshold as specified in the respective
properties. The RSSI seek threshold is shown in red, the SNR seek
threshold is shown in orange.
5
Valid Stations
Mark valid stations based on the RSSI/SNR seek threshold settings. Valid
frequencies can also be marked.
6
Clear
Click this button to clear the traces selected in the Delete Plots combo box.
Select between drawing the RSSI, SNR graph, or both.
Select between drawing in bar mode (depicted as green) or in continuous
line mode (depicted as yellow).
Click this to start plotting the graph.
Rev. 0.7
79
Si47xx-EVB
6.9. FM Receiver Register Map Window
The register map window allows the user to manually program the device by sending commands to the device.
Refer to "AN332: Si47xx Programming Guide" to manually program the device.
Figure 61. FM Receiver Register Map Window
80
Rev. 0.7
Si47xx-EVB
6.10. FM Receiver Logging Tools
The GUI provides several useful logging tools. In the tools menu, user can choose to log raw RDS data, band scan
data, device commands and channel info.
Figure 62. Logging Tools
6.10.1. Log Band Scan
Selecting ToolsLog Band Scan allows you to specify a filename and begin a scan of the entire band for RDS
data, RDS acquisition times, and the contents of each register. The scan feature starts with the first frequency in
the band (CHAN = 0) and then seeks to the first station that meets the seek criteria (SEEKTH, SKCNT, SKSNR).
When a valid station is found, the software waits at the station for the time specified by ViewSession
PreferencesScan Log After Tune Delay (sec) and then checks if RDS is available. If RDS is not available, the
software logs the register settings and seeks to the next valid station. If RDS is available, the software waits an
additional delay as specified by ViewSession PreferencesScan Log RDS Log Delay (sec). When this delay
expires, the software logs the RDS information and register settings and seeks to the next valid station. While
scanning, the software displays a green "Scanning" notice below the menu bar. The scan can be aborted by
selecting the ToolsLog Band Scan a second time. When the scan completes, the filename given is saved in
comma separated format and is available for analysis in a text editor or spreadsheet.
6.10.2. Log Raw RDS Data
Selecting ToolsLog Raw RDS Data prompts for a filename in which all RDS data will be logged in comma
separated format. The software then logs all raw RDS data that is received, the station it is received on, and the
time at which it was received. The logging will continue until ToolsLog Raw RDS Data is selected a second time
at which point the file is saved and available for analysis in a text editor or spreadsheet.
6.10.3. Log Channel Info
Selecting ToolsLog Channel Info prompts for a filename in which all register values will be logged in comma
separated format. The software then logs all register values and the time at which it was received. The logging will
continue until ToolsLog Channel Info is selected a second time, at which point the file is saved and available for
analysis in a text editor or spreadsheet.
6.10.4. Log Device Commands
Selecting ToolsLog Device Commands prompts for a filename in which all software API calls and data with
timestamp data will be logged as text. The logging will continue until ToolsLog Device Commands is selected a
second time, at which point the file is saved and available for analysis in a text editor.
Rev. 0.7
81
Si47xx-EVB
6.11. FM Receiver Configuration Helper
The configuration helper is a useful tool for configuring the thresholds related to RSSI based Blend, SNR based
Blend, Multipath based blend, SNR based hi-cut, Multipath based hi-cut, and Soft Mute.
Figure 63. FM Configuration Helper
1
2
3
4
5
6
Figure 64. FM Configuration Helper Window (Multipath Based Hi-cut)
82
Rev. 0.7
Si47xx-EVB
Table 21. Configuration Helper Window Descriptions
#
Item
Description
1
Select Parameter
Selects between Hi-cut Multipath (Si4706/4x only), Hi-cut SNR(Si4706/
4x only), SoftMute, Stereo blend Multipath (Si4706/4x only), Stereo
Blend RSSI and Stereo Blend SNR (Si4706/4x only).
2
Hi-cut/ Blend/Soft Mute Graph
The plot displays the device threshold and rate settings, current signal
conditions, and the calculated audio conditioning.
3
Plot Legend
The plot legend includes numeric values for current signal conditions
and calculated audio conditioning.
4
Configuration Values
Configure threshold and rate properties. These values are at all times
synchronized with the values available through the Properties window.
5
Selected Parameter Description
Read a detailed description of the currently selected parameter in the
Configuration Values group.
6
Close
Click this button to close the Configuration Helper window.
In the example shown in Figure 64, the current level marker shows that Hi-cut filter is set at 6 kHz. This is
determined by both SNR and multipath conditions. Current SNR is 5 dB. Hi-cut SNR Low Threshold is set at 15 dB
and hi-cut minimum frequency is set at 6 kHz. SNR is the determining factor in this case as it is already lower than
the low threshold. Graph shows the current state of SNR (white diamond) and multipath (green diamond) and plots
for each of them that show the transition between high and low thresholds and how the hi-cut filter frequency would
be adjusted accordingly. You can adjust the configuration values to see how these plots and the current state of hicut would change.
Rev. 0.7
83
Si47xx-EVB
Figure 65. FM Configuration Helper Window (SNR Based Hi-cut)
In the example shown in Figure 65, the current level marker shows that hi-cut filter is set at 6 kHz. This is
determined by both SNR and multipath conditions. Current SNR is 5 dB. Hi-cut SNR Low Threshold is set at 15 dB
and hi-cut minimum frequency is set at 6 kHz. SNR is the determining factor in this case as it is already lower than
the low threshold. The graph shows the current state of SNR (green diamond) and multipath (white diamond) and
plots for each of them that show the transition between high and low thresholds and how the hi-cut filter frequency
would be adjusted accordingly. You can adjust the configuration values to see how these plots and the current state
of hi-cut would change.
84
Rev. 0.7
Si47xx-EVB
Figure 66. FM Configuration Helper Window (Softmute)
In the example shown in Figure 66, the current level marker shows that Soft Mute level is 0 dB. SNR threshold is
programmed as 4 dB and max attenuation is 16 dB. Since the SNR reported by the part is 5 dB, which is above the
threshold, the softmute level is 0 dB. The graph shows the current state of SNR (green diamond) and plot shows
the softmute profile based on max attenuation, threshold and slope settings. You can adjust the configuration
values to see how the plot and the current state of softmute would change.
Rev. 0.7
85
Si47xx-EVB
Figure 67. FM Configuration Helper Window (SNR Based Blend)
In the example shown in Figure 67, the Current Level marker shows that Stereo % is 56%. SNR threshold is
programmed as 14 dB (and below) for full mono and 30 dB (and above) for full stereo. Since the SNR reported by
the part is in between the thresholds, the stereo level is 56%. RSSI and Multipath do not factor in here as they are
both at levels that would set the part in full stereo. The graph shows the current state of SNR (green diamond),
RSSI (white diamond), and multipath (yellow diamond) and plots for each of them that show the transition between
high and low thresholds and how the blend would be adjusted accordingly. You can adjust the configuration values
to see how these plots and the current state of blend would change.
86
Rev. 0.7
Si47xx-EVB
Figure 68. FM Configuration Helper Window (RSSI Based Blend)
In the example shown in Figure 68, the Current Level marker shows that Stereo % is 56%. RSSI threshold is
programmed as 30 dBµV (and below) for full mono and 49 dBµV (and above) for full stereo. RSSI reported by the
part is in between the thresholds however the final blend percentage is determined by SNR and the stereo level is
56%. Multipath does not factor in here as it is at a level that would set the part in full stereo. The graph shows the
current state of RSSI(green diamond), SNR (white diamond), and multipath (yellow diamond) and plots for each of
them that show the transition between high and low thresholds and how the blend would be adjusted accordingly.
You can adjust the configuration values to see how these plots and the current state of blend would change.
Rev. 0.7
87
Si47xx-EVB
In the example shown in Figure 69, the Current Level marker shows that Stereo % is 50%. Multipath threshold is
programmed as: 60% (and above) for full mono and 20% (and below) for full stereo. Multipath reported by the part
is 11% which would put the part in full stereo. However the final blend percentage is determined by SNR and the
stereo level is 56%. The graph shows the current state of Multipath(green diamond), RSSI (white diamond) and
SNR (yellow diamond) and plots for each of them that show the transition between high and low thresholds and
how the blend would be adjusted accordingly. You can adjust the configuration values to see how these plots and
the current state of blend would change.
Figure 69. FM Configuration Helper Window (Multi-path Based Hi-blend)
88
Rev. 0.7
Si47xx-EVB
7. Weather Band GUI
7.1. WB Receiver Initialization
The first Si47xx window is the Initialization window as shown in Figure 70. On the function menu, select and
highlight the function of the Si47xx as a WB Receiver. Select the Boot Mode, Audio Mode, Firmware, Bus Mode,
and initial part settings and then click Initialize. A new window displaying "Initializing WB Receiver" will appear. If
you check "Use XOSCEN," the daughter card crystal and on-chip oscillator will be used to clock the Si47xx. You
can also select "(Analog Mode) to Analog Output", "(Digital Mode) to SPDIF and CODEC (Analog Output)", or
"(Analog & Digital Mode) to Analog Output and SPDIF" with the Audio Mode drop down menu.
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. Modes of operation requiring the SPDIF will not be
available in the initialization window for those boards.
Figure 70. Weather Band Receiver Initialization
Rev. 0.7
89
Si47xx-EVB
7.2. Weather Band Main Window
The weather band main window will appear after initialization.
2
1
3
5
7
4
6
8
Figure 71. Weather Band Receiver Main Window
Table 22. Weather Band Receiver Main Window Descriptions
#
Name
Description
1
Tune/Seek
Tune Down (<), Tune Up (>) buttons execute a signal channel step (25 kHz step).
Seek function is not available in the WB Receiver mode.
2
Frequency Slider Bar,
AFC Valid, Alert Tone
The Frequency Display indicates the frequency in MHz. To change the frequency,
drag the pointer in the Frequency Slider Bar to the desired frequency.
AFC Rail indicator will be red if the tuned frequency is in an AFC rail state;
otherwise the indicator will be grey
The Alert Tone indicator will be green if the 1050 Hz Alert Tone is detected.
3
Volume, Mute
Select the Si473x output volume (0-63) by moving the slider bar pointer. Press the
Mute button on the mute radio. The button will be red if the radio is muted. Press
the Mute button again to remove the muting.
4
Auto Scan,
To Preset, Select Stn
Auto Scan, To Preset, Select Stn functions are not available in the WB Receiver
mode.
5
Status
The RSSI indicator displays the RSSI of the signal in dBuV. The SNR indicator
displays the SNR of the received signal in dB. The varactor is not available in the
WB Receiver mode.
6
Preset
Press the desired button to tune to the frequency displayed on the button. To store
a new value to the preset button, tune to the desired frequency and then press
and hold the desired button for 1.5 seconds. The button will then change to
indicate the stored frequency. This information is stored to a file and used the next
time the program is run.
7
Function
8
SAME Event
Information
90
The Function buttons are used to boot up the device in a different mode.
The SAME Event Information displays the SAME Event Information. Use the up/
down arrow key to view different events. (Si4707 only)
Rev. 0.7
Si47xx-EVB
7.3. Weather Band Settings Property Window
WB receiver settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all WB receiver properties are also located in WindowPropertiesWB: All.
Figure 72. Weather Band Receiver Settings Property Window
Table 23. Weather Band Receiver Settings Property Window
Item
Description
Range
All
Clock Configuration Properties
Reference Clock
Frequency (Hz)
Reference Clock Prescaler
This field is used to specify the frequency of the ref- 31130–34406 Hz
erence clock. The input to the RCLK pin divided by
the prescaler is the reference clock. The reference
clock must be in the range of 31130 to 34406 Hz.
This field is used to specify the prescaler value. The
input to the RCLK pin divided by the prescaler is the
reference clock. The reference clock must be in the
range of 31130 to 34406 Hz.
1–4095 Hz
Format of digital audio output.
Digital Sample Precision Digital audio output bit precision.
Rev. 0.7
All
All
All
Digital Output Properties
Digital Format
Applicable
Devices
I2S, Left-Justified,
DSP
All
8-bit, 16-bit,
20-bit, 24-bit
Si4743/47/49
91
Si47xx-EVB
Table 23. Weather Band Receiver Settings Property Window (Continued)
Item
Description
Digital Sample Rate Hz DFS sample rate for digital input signal. Recommended values are: 32 kHz, 44.1 kHz, or 48 kHz.
Over-sampling rate must be set in order to satisfy a
minimum DCLK of 1MHz. Sample rate must be set
to 0 before DCLK/DFS is removed.
Digital Mono Mode
Enable
ON enables mono in digital audio output.
Digital DCLK Falling Edge ON uses falling edge of DCLK for sampling.
Range
Applicable
Devices
0, 32000–
48000 Hz
All
ON, OFF
All
ON, OFF
All
All
Seek/Tune Properties
Max Time Error (kHz)
92
If a station is offset from the set frequency by this
amount or more, the AFC rail bit is set.
Rev. 0.7
1–15 kHz
All
Si47xx-EVB
7.4. Weather Band Receiver RSSI/SNR Graph Window
The RSSI/SNR Graph Window allows the user to plot RSSI and SNR across the weather band. Bitmap data can be
saved to file by selecting FileSave as Bitmap and tabulated data can be saved to file by selecting FileSave to
.csv.
1
2
3
4
Figure 73. Weather Band Receiver RSSI/SNR Graph Window
Table 24. Weather Band Receiver RSSI/SNR Graph Window Descriptions
#
Items
Description
1
RSSI/SNR Graph
2
Line/Bar
3
Draw
Click this to start plotting the graph.
4
Clear
Click this button to clear the entire graph.
Select between drawing the RSSI, SNR graph, or both.
Select between drawing in bar mode or in continuous line mode.
Rev. 0.7
93
Si47xx-EVB
7.5. Weather Band Receiver Register Map Window
The register map window allows the user to manually program the device by sending commands to the device.
Refer to "AN332: Si47xx Programming Guide" to manually program the device.
Figure 74. Weather Band Receiver Register Map Window
94
Rev. 0.7
Si47xx-EVB
7.6. Weather Band Receiver SAME Event Data (Si4707 only)
The SAME Event Data window allows the user to view the SAME message description, originator ID, originator
type, purge time, origination time, region along with the raw data and event confidence.
The Event to be displayed can be selected through the "Event" drop down box. The message buffer can be cleared
by clicking on the "Clear Messages" button.
The confidence metric for each byte is listed as a number from 0 to 3 with 3 representing the highest confidence
level. The "Incoming Message" indicator is lit for a new incoming message.
Raw data, confidence metrics, time stamp and status flags may be logged to file by selecting ToolsLog Raw
SAME Data.
Figure 75. Weather Band Receiver SAME Event Data
Rev. 0.7
95
Si47xx-EVB
8. AM Receiver GUI
8.1. AM Receiver Initialization
The first Si474x window is the Initialization window as shown in Figure 76. On the function drop-down menu, select
the function of the Si474x as an AM Receiver. Select the device, busmode, firmware revision, and initial part
settings and then click Initialize. A new window displaying "Initializing AM Receiver" will appear. Crystal operation
is not supported on Si474x-EVB (that supports Si4740/41/42/43/44/45). You can also select Analog Output or
Digital Output through SPDIF and CODEC with the EVB Audio Settings drop down box. The AM receiver mode is
used for LW reception as well.
Figure 76. AM Receiver Initialization
96
Rev. 0.7
Si47xx-EVB
8.2. AM Receiver Main Window
The AM receiver main window will appear after initialization.
Figure 77. AM Receiver Window
Table 25. AM Receiver Window Descriptions
#
Name
Description
1
Tune/Seek Tune Down (<), Tune Up (>) buttons execute a single channel step according to the channel
spacing setting. The channel spacing setting can be set in the property window.
Seek down (<<), Seek Up (>>) buttons execute a seek up or down to the next received FM
signal meeting or exceeding the seek settings within the selected band. The seek setting RSSI
and SNR threshold can be set in the property window.
2
Frequency
Slider
Bar, AFC,
Valid
3
Volume,
Mute
4
5
The Frequency Display indicates the frequency in kHz. To change the Frequency, drag the
pointer in the Frequency Slider Bar to the desired frequency.
AFC Rail indicator will be red if the tuned frequency is in an AFC rail state, otherwise the
indicator will be grey.
The Valid indicator will be green if the AM frequency meets the RSSI and SNR seek settings.
Select the Si473x output volume (0–63) by moving the slider bar pointer. Press the Mute button
to mute the radio. If the radio is muted the button will be red. Press the Mute button again to
remove the muting.
Auto Scan The Auto Scan button will find all the stations with an RSSI and SNR above the seek settings in
the property window. After the scan is completed, the number of stations found will be displayed
and each station will be available in the drop down box. Also, a red indicator mark will be displayed on the Frequency Slider Bar (2) for each station. The "To Presets" Button will program the
preset buttons (5) with the 12 strongest stations.
Presets
Press the desired button to tune to the frequency displayed on the button. To store a new value
to the preset button, tune to the desired frequency and then press and hold the desired button
for 1.5 seconds. The button will then change to indicate the stored frequency. This information is
stored to a file and used the next time the program is run.
Rev. 0.7
97
Si47xx-EVB
Table 25. AM Receiver Window Descriptions (Continued)
#
Name
Description
6
Status
The RSSI indicator displays the RSSI of the signal in dBuV. The SNR indicator displays the SNR
of the received signal in dB. The varactor value specifies the capacitance of the tuning front-end.
A value of 6143 means that the maximum capacitance is being presented at the AM input and a
value of 1 means that the varactor is at its minimum value. The AGC Index indicator displays the
AGC status. The Soft Mute indicator displays the estimated attenuation applied to the signal
based on RSSI and SNR values.
7
Function,
Band
Selection
The Function buttons are used to boot up the device in different mode.
Using the Band Selection drop down box, you can select different AM, LW, or SW bands. The
drop down box will only appear with LW or SW enabled device. If an SW band is selected using
the SW/WB Antenna Card, set the varactor to 1 for best performance. LW not support with SW/
WB Antenna Card.
98
Rev. 0.7
Si47xx-EVB
8.3. AM Receiver Property Settings Window
AM receiver settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all AM receiver properties are also located in WindowPropertiesAM: All.
Figure 78. AM Receiver Settings Property Window
Rev. 0.7
99
Si47xx-EVB
Figure 79. AM Receiver Settings Property Window for Si474x
100
Rev. 0.7
Si47xx-EVB
Table 26. AM Receiver Property Window Descriptions
Name
Description
AGC Attack Rate Sets the AGC attack rate. Larger values provide
slower attack and smaller values provide faster
attack.
AGC Frontend Sets gain index backup (ATTN_BACKUP) for exterAttn. Backup nal attenuator. For Si4743EVB, 12 and 20 are recomSteps
mended for "Passive" and "Active" external
attenuators, respectively.
AGC Frontend Sets minimum gain index. For Si4743EVB, 19 is recMin. Gain Index ommended.
Range
Applicable
Devices
4–248
Si4740/41/42/43/
44/45
0–28
(AM Component
2.E.5)
Si4740/41/42/43/
44/45
0–28
Si4740/41/42/43/
44/45
(AM Component
2.E.5)
AGC Index
0–
All
Sets gain index when "AGC Override" is On.
37+ATTN_BACKU
P
AGC Override When "Off", AGC is enabled. When "On", AGC is disON/OFF
All
abled and gain index is forced to "AGC Index"
AGC Release Sets the AGC release rate. Larger values provide
4–248
Si4740/41/42/43/
Rate
44/45
slower release and smaller values provide faster
release.
External
For Si474x-EVB daughtercard versions > 1.2. When ACTIVE, PASSIVE Si4740/41/42/43/
Attenuator Select using an antenna, set this property to PASSIVE. If
44/45
you are connecting a signal generator directly, set
this to ACTIVE.
Auto Volume Sets the maximum gain allowed for automatic volume
6.02–90.3 dB
Si473x-C40 and
later, Si474x
Cont. Max Gain control.
(dB)
De-Emphasis De-emphasis filter setting allows the user to select
ON/OFF
All
whether to turn on/off the de-emphasis filter.
Power Line Noise ON enables high pass filter to filter out the 50/60 Hz
ON/OFF
Si473x-C40 and
Filter
later, Si4740/41/42/
tone.
43/44/45
All
Reference Clock This field is used to specify the frequency of the refer- 31130–34406 Hz
Frequency (Hz) ence clock. The Reference clock frequency divided
by the pre-scalar must be in the range of 31.130 to
34.406 kHz.
1–4095
All
Reference Clock Reference Clock Pre-scalar divides down RCLK frePrescaler
quency by the value specified in this field. The Reference clock frequency divided by the pre-scalar must
be in the range of 31.130 to 34.406 kHz.
Digital DCLK ON uses falling edge of DCLK for sampling.
ON, OFF
Si4705/06,
Falling Edge
Si4731/35/37/39,
Si4730/34/36/38D60 and later,
Si4741/43/45,
Si4784/85
Rev. 0.7
101
Si47xx-EVB
Table 26. AM Receiver Property Window Descriptions (Continued)
Name
Digital Format
Description
Range
Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38D60 and later,
Si4741/43/45,
Si4784/85
Digital Mono
ON,
OFF
Si4705/06,
ON enables mono in digital audio output.
Mode Enable
Si4731/35/37/39,
Si4730/34/36/38D60 and later,
Si4741/43/45,
Si4784/85
Digital Sample Digital audio output bit precision.
8-bit, 16-bit, 20-bit,
Si4705/06,
Precision
24-bit
Si4731/35/37/39,
Si4730/34/36/38D60 and later,
Si4741/43/45,
Si4784/85
0, 32000–48000 Hz
Si4705/06,
Digital Sample DFS sample rate for digital input signal. RecomRate Hz
Si4731/35/37/39,
mended values are: 32 kHz, 44.1 kHz, or 48 kHz.
Over-sampling rate must be set in order to satisfy a
Si4730/34/36/38minimum DCLK of 1 MHz. Sample rate must be set to
D60 and later,
0 before DCLK/DFS is removed.
Si4741/43/45,
Si4784/85
Noise Blanker Delay in microseconds before applying noise blank125–205 µs
Si4742/43/44/45
Delay
ing to the original samples.
0 – 90 dB
Si4742/43/44/45
Noise Blanker Sets the threshold for detecting impulses in dB above
Detect Threshold the noise floor. If set to 0, impulse noise blanking is
disabled.
300–1600
Si4742/43/44/45
Noise Blanker IIR Sets the cut-off frequency for the low pass filter that is
Filter
used for noise floor estimation in noise blanker detection.
8 – 48 µs
Si4742/43/44/45
Noise Blanker Interval original samples are replaced by interpolated
Interval
clean samples.
Noise Blanker Maximum noise blanking rate.
100 – 6400 Hz
Si4742/43/44/45
Rate
10 kHz Spacing:
All
Band Bottom The lower frequency limit for the seek function. This
Limit (kHz)
520
kHz
is set automatically by the GUI based on spacing
selection.
9 kHz Spacing:
510 kHz
Band Top Limit The upper frequency limit for the seek function.
1710 kHz
All
(kHz)
Channel Filter Channel Filter allows the user to select the bandwidth
1, 1.8, 2, 3, 4,
All
6 kHz
of the bandpass channel filter.
102
I2S, Left-Justified,
DSP
Applicable
Devices
Format of digital audio output.
Rev. 0.7
Si47xx-EVB
Table 26. AM Receiver Property Window Descriptions (Continued)
Name
Description
Seek Mode
Seek mode specifies the behavior of seek when it
reaches either end of the AM band. The default value
makes the seek wrap around and start at the other
end of the AM band. The other option makes seek
stop if it reaches either end of the AM band without
finding an AM station.
Seek RSSI
Seek RSSI threshold is a metric that is used when
Threshold
using the seek feature. Any signal with an RSSI lower
(dBµV)
than the threshold will be ignored during a seek.
Seek SNR
Seek SNR threshold is a metric that is used when
Threshold (dB) using the seek feature. Any signal with an SNR lower
than the threshold will be ignored during a seek.
Spacing
Allows specification of the step spacing when tuning
with the GUI.
Varactor
Varactor capacitance overwrite allows the specificaCapacitor
tion of the capacitance presented to the AMI pin from
Overwrite
the tunable capacitor inside the part. A value of 0
automatically selects the value.
Soft Mute Attack Sets the attack rate for entering soft mute.
Rate (dB/s)
Soft Mute
Soft mute attenuation slope specifies the slope of the
Attenuation
attenuation curve when the signal SNR is below the
Slope
soft mute SNR threshold. It is specified as dB/dB
(dB/dB)
where the attenuation applied is simply the value
specified here times the amount the signal SNR is
below the threshold.
Soft Mute Max Soft mute attenuation is the amount of attenuation
Attenuation (dB) that takes place when the signal falls below the soft
mute threshold.
Soft Mute
Sets the release rate for leaving soft mute.
Release Rate
(dB/s)
Soft Mute SNR Soft mute SNR threshold is the level below which soft
Threshold (dB) mute is activated.
Rev. 0.7
Range
Applicable
Devices
Stop at Limit or
Wrap at Limit
All
0–63 dBµV
All
0–63 dB
All
9 or 10 kHz
All
Automatic: 0
Manual: 1–6143
All except Si4710A10
1–31999 dB/s
Si4740/41/42/43/
44/45
All
1–5
0–63 dB
0 = disable
All
1–31999 dB/s
Si4740/41/42/43/
44/45
0–63 dB
All
103
Si47xx-EVB
8.4. AM Receiver RSSI/SNR Graph Window
The RSSI/SNR graph window allows the user to plot RSSI and SNR across the AM band. Bitmap data can be
saved to file by selecting FileSave as Bitmap and tabulated data can be saved to file by selecting FileSave to
.csv.
1
3
2
4
5
6
Figure 80. AM Receiver RSSI/SNR Graph Window
Table 27. FM Receive RSSI/SNR Graph Window Descriptions
#
Items
1
RSSI / SNR Graph
2
Line / Bar
3
Draw
4
Seek Threshold
(RSSI / SNR)
5
Mark Valid Stations
6
Clear
104
Description
Select between drawing the RSSI or SNR graph.
Select between drawing in bar mode (depicted as green) or in continuous
line mode (depicted as yellow).
Click this to start plotting the graph
Draw the RSSI and/or SNR seek threshold as specified in the respective
properties. The RSSI seek threshold is shown in red; the SNR seek threshold is shown in orange.
Mark Valid Stations based on the RSSI/SNR seek threshold settings.
Click this button to clear the traces selected in the Delete Plots combo box.
Rev. 0.7
Si47xx-EVB
8.5. AM Receiver Register Map Window
The register map window allows the user to manually program the device by sending commands to the device.
Refer to "AN332: Si47xx Programming Guide" to manually program the device.
Figure 81. AM Receiver Register Map Window
Rev. 0.7
105
Si47xx-EVB
8.6. AM Receiver Logging Tools Info
8.6.1. Log Band Scan
Selecting ToolsLog Band Scan allows you to specify a filename and begin a scan of the entire band. The scan
feature starts with the first frequency in the band and then seeks to the first station that meets the seek criteria
(Seek RSSI Threshold, Seek SNR Threshold). When a valid station is found, the software waits at the station and
logs Frequency, AFC, RSSI, SNR, Soft Mute etc settings and then seeks to the next valid station. While scanning,
the software displays a green "Scanning" notice below the menu bar. The scan can be aborted by selecting the
ToolsLog Band Scan a second time. When the scan completes, the filename given is saved in comma separated
format and is available for analysis in a text editor or spreadsheet.
8.6.2. Log Device Commands
Selecting ToolsLog Device Commands prompts for a filename in which all software API calls and data with
timestamp data will be logged as text. The logging will continue until ToolsLog Device Commands is selected a
second time, at which point the file is saved and available for analysis in a text editor.
8.6.3. Log Channel Info
Selecting ToolsLog Channel Info prompts for a filename in which all register values will be logged in comma
separated format. The software then logs all register values and the time at which it was received. The logging will
continue until ToolsLog Channel Info is selected a second time, at which point the file is saved and available for
analysis in a text editor or spreadsheet.
106
Rev. 0.7
Si47xx-EVB
8.7. AM Receiver Configuration Helper
Selecting WindowConfiguration Helper opens up the Configuration Helper window. The Configuration Helper is
a very useful tool to configure the thresholds and the rates associated with Soft-Mute.
Figure 82. AM Configuration Helper Window
In the example shown in Figure 82, the audio signal does not get attenuated because the SNR reported by the chip
is greater than the programmed SNR threshold for Soft Mute.
Rev. 0.7
107
Si47xx-EVB
9. Using the EVB with a 9 V Battery
The EVB can be used with a 9 V battery that allows the user to disconnect the board from the computer for
evaluating the Si47xx. Follow the guidelines listed below to use your EVB with a 9 V battery.
1. Put the switch SW1 in the Ext/Battery position.
2. Connect a 9 V battery to jumper J77.
3. Connect the USB cable.
4. Launch the GUI.
5. Initialize the EVB for AM or FM reception.
6. Once the desired station is tuned and all the settings for the receiver are according to the user's liking, please exit the GUI.
7. When asked whether to leave the device on, please click on yes.
8. Remove the USB cable.
9. The EVB can now be moved around.
Please note that once the EVB is using its 9 V battery, it is not possible to change the tuned station. Repeat steps
3–9 to tune the EVB to a different station while running on the 9 V battery.
108
Rev. 0.7
Si47xx-EVB
10. Debugging Guidelines for Si47xx EVB
Table 28. Debugging Guidelines for Si47xx EVB
Mode
Symptom
Configuration
EVB not recognized

Initialization
GUI crashes

Receive
Audio clicking noise

Receive
Excess interference/  If using a laptop, ensure it is running off the battery and not plugged in to
Poor Reception
the ac mains.
 Alternatively, disconnect from the host PC and run from battery power.
 Move to a stronger signal environment.
Receive
Receive
FM/WB
Receive
AM Receive
Solution
If the EVB is not recognized by the PC, remove the USB connection and
reconnect. Ensure the EVB is recognized by the PC by right-clicking on
My Computer and selecting PropertiesHardwareDevice Manager.
Under Human Interface Devices, select each HID-Compliant
Device“Details entry and confirm one contains VID_10C4&PID_8244.
 IF the EVB is not recognized by the GUI, but is recognized by the PC, it
is likely that another process has erroneously acquired the handle to the
EVB. Two processes known to cause this issue are lxhidsve.exe and
EAUSBKBD.exe. Terminate these processes in the Task Manager.
 If EVB is not recognized by the GUI, uninstall .NET framework 2.0 and
reinstall from the installation CD or Microsoft’s website. The GUI
requires .NET Framework 2.0; however, multiple versions such as 1.1,
2.0, and 3.0 may be installed simultaneously.
The GUI may crash if a previous GUI .ini file was not removed properly.
Close the GUI, and delete all .ini files from the GUI directory. Launch the
GUI and try again.
 If the GUI continues to crash, close the GUI, remove the GUI from
Control PanelAdd or Remove Programs, and then delete the GUI
directory. Launch the GUI and try again.
Disable "Update" under the "Control" menu (disables continuous GUI/
Si47xx updates).
Seek/scan doesn’t find  Adjust Seek SNR and Seek RSSI thresholds downwards.
expected channels  Verify band and channel spacing for the region.
Seek/scan stops on
noise


Adjust Seek SNR and Seek RSSI thresholds upwards.
If using a laptop, ensure it is running off the battery and not plugged in to
the ac mains.
Poor sensitivity from  Remove ac coupling cap from the headphone input path to eliminate
FM test port
possible sources of interference.
Excess interference/ 1. Check the antenna board connection on J2.
Poor reception
2. Make sure the ferrite bar is not loose and does not slide in the coil.
3. If using a laptop, ensure it is running off the battery and not plugged in.
4. Alternatively, disconnect from the host PC and run from battery power.
5. Move to a stronger signal environment. Make sure you are close to a window or
outside in the open when evaluating AM reception. Large metal structures, like
buildings, interfere with AM reception so it is best to be away from these sources
of interference.
Rev. 0.7
109
Si47xx-EVB
Table 28. Debugging Guidelines for Si47xx EVB
Mode
Symptom
Solution
FM Transmit Audio distorted/Limiter  Confirm that audio input levels match the Line Input Attenuation and
engaging excessively
Maximum Line Input Levels.
 Disable or scale back the gain of the audio dynamic range control.
FM Transmit
110
Poor transmit audio
quality

Increase the RF level.
 Increase the audio deviation level.
 Change the RF frequency to a channel with less interference.
The RPS feature can be used to find candidate frequencies.
Rev. 0.7
Si47xx-EVB
11. Bill of Materials
Table 29. Si47xx-EVB Baseboard Rev 1.6 Bill of Materials
Item
Qty
1
2
1
27
3
4
5
6
1
1
1
6
7
8
9
10
2
5
1
8
11
12
13
14
15
16
17
18
19
20
21
22
23
12
3
1
1
2
1
2
2
3
1
5
1
1
24
2
25
26
27
2
2
2
28
29
30
31
32
2
1
1
1
1
33
1
RefDes
Description
J78
2.1 mm power plug
C1,C2,C4,C11,C13,C28,
CAP,SM,0402,0.1UF,10%
C31,C33,C34,C35,C36,
C39,C40,C42,C43,C46,
C50,C52,C54,C55,C57,
C61,C62,C68,C71,C73,C74
C72
RADIAL CAP
C70
CAP,SM,0805
C60
CAP,SM,7343,15UF,10%
C18,C21,C22,C38,C69,
CAP,SM,0603,1UF,X7R
C77
C20,C41
CAP,SM,0402
C23,C26,C27,C30,C53
CAP,SM,0402,.01UF,10%,25V
C59
CAP,SM,0402,22PF,10%
C32,C37,C45,C47,C48,
CAP,SM,3216,16V
C49,C51,C65
CAP,SM,0805
C25,C3,C75
CAP,SM,0402,220PF,5%
C58
CAP,SM,3216,10V,10%,6.8UF
C56
CAP,SM,0805,25V,10%,4.7UF
C12,C76
CAP,SM,0402,820PF,5%
D1
LED,T-1 3/4.RED DIFFUSED
FB1,FB2
FERRITE BEAD,SM
C100, C101
RES,SM,0805
J2,J17,J21
Solder jumpers
J77
CONN,TH,1X2,HDR
J5,J13,J41,J61,J65
CONN,TH,1X3,HDR
J62
CONN,TH,2X10,HDR
J76
PCB TERMINAL BLOCK, 4
POSITION
J27,J75
CONN,TH,TFM,HDR,2X20,0.05
X0.05IN PITCH
J24,J54
SMA_VERTICAL
J32,J51
CONN,TH,1X8,HDR
J68, J69
CONN,TH,1X3,HDR \
CONN,TH,1X1,HDR
J6,J7
CONN,RCA,RIGHT ANGLE
J30
MINIJACK,3.3V,8MBPS
J19
MINIJACK,RCVR,3.3V,8MBPS
J74
HEADER,SHROUDED,5X2
J79
CONN,TH,USB,RCPT,TYPE B
PB1
BUTTON,SM,LIGHTTOUCH,160GF,6X3.5MM
Value
Mfg/Vendor
Mfg/Vendor_PN
0.1UF
CUI
VENKEL
CONN_PJ-01
C0402X7R160-104KNE
Kemet
T350B475K016AS
VISHAY
VENKEL
293D156X9020D2T
C0603X7R100-105KNE
4.7UF
0.1UF
15UF
1UF
24pf
MURATA
GRM1555C1H240JZ01D
0.01uF
Kemet
C0402C103K3RACTU
22Pf
PANASONIC-ECG
ECJ-0EC1H220J
10UF
VISHAY
293D106X9016A2
10UF
MURATA
GRM21BR71A106KE51L
220PF PANASONIC - ECG
ECJ-0EC1H221J
6.8UF
EPCOS INC
B45196H2685K109
4.7UF
MURATA
GRM21BR61E475KA12L
820pF
MURATA
GRM1555C1E821JA01
LITEON
LTL-10223W
STEWARD
MI0805K400R-00
0ohm
VENKEL
CR0805-16W-000T
SAMTEC
SAMTEC
SAMTEC
MOUSER
ELECTRONICS
SAMTEC
TSW-102-07-G-S
TSW-103-07-G-S
TSW-110-07-G-D
651-1803293
TFM-120-02-S-D-A
Digikey
SAMTEC
SAMTEC
ARFX1231-ND
TSW-108-07-G-S
TSW-103-07-G-S \ TSW101-07-G-S
CUI
RCJ-2123
SHARP
GP1FD310TP
SHARP
GP1FD210RP
3M
2510-6002UB
67068-0000
MOLEX/WALDOM
ELECTRO
PANASONIC - ECG
EVQ-PPBA25
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. On those boards items 29, 30, and 68—silkscreened as
J30, J19 and U9—will not be populated.
Rev. 0.7
111
Si47xx-EVB
Table 29. Si47xx-EVB Baseboard Rev 1.6 Bill of Materials (Continued)
Item
Qty
RefDes
Description
Value
Mfg/Vendor
Mfg/Vendor_PN
34
28
RES,SM,0402
0R
VENKEL
CR0402-16W-000T
35
36
37
38
39
1
5
2
1
4
R8,R9,R20,R48,R49,R50,
R51,R52,R53,R54,R55,
R56,R57,R58,R59,R60,
R62,R63,R68,R69,R71,
R72,R75,R77,R79,R81,
R82,R91
R80
R5,R7,R10,R11,R29
R12,R13
R43
R17,R27,R36,R19
RES,SM,0402
RES,SM,0402
RES,SM,0402
RES,SM,0402
RES,SM,0402
22.1
10K
5.6K
33
47K
CR0402-16W-22R1FT
RK73H1ELTP1002F
RK73H1ELTP5601F
CR0402-16W-330GT
RC0402FR-0747KL
40
1
R31
RES,SM,0402,300,1%,1/16W
301
41
1
R38
RES,SM,0402,100,1%,1/16W
100
42
8
RES,SM,0402,160K,5%
160K
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
2
2
2
1
4
1
1
1
1
2
2
1
1
2
1
1
7
RES,SM,0402,7.32K,1%
RES,SM,0402,12.7K,1%
RES,SM,0402,7.68K,1%
RES,SM,0402
RES,SM,0402
RES,SM,0805
RES,SM,0402,1%
RES,SM,0402,1%
RES,SM,0402
RES,SM,0402
RES,SM,0402
RES,SM,0603
VARISTOR,SM,O603
VARISTOR,SM,O402
RES,SM,0402,680,1%,1/16W
SWITCH_3PIN
SPDT_SWITCH,SC70-6
7.32K
12.7K
7.68K
1K
2K
470
51.1K
140K
330K
124K
39.2K
1K
60
1
R1,R2,R4,R6,R15,R16,
R18,R23
R26,R90
R34,R89
R22,R14
R85
R61,R70,R76,R83
R47
R46
R45
R44
R21,R28
R25,R33
R84
R86
R87,R88
R24
SW1
U1,U3,U8,U11,U13,U18,
U21
U17
VENKEL
KOA SPEER
KOA SPEER
VENKEL
YAGEO
CORPORATION
YAGEO
CORPORATION
YAGEO
CORPORATION
VENKEL
61
62
1
2
U14
U7,U12,
63
64
3
1
U2,U4,U5
U16
65
1
U10
66
1
U6
67
1
U22
VOLTAGE_REG,3_3
V,500MA,SOT223
OCTAL_BUFFER,TSSOP-20
IC,SINGLE_SCHMITT_TRIGGE
R_BUFFER
IC,SM,OPAMP,SOT23-8
VOLTAGE_REG,ADJV V,200MA
IC,SM,WM8731,WOLFSON,QFN-28
IC,SM,UHS DUAL SPST,8 LEAD
US8
IC,SM,C8051F342,MCU,LQFP32,9X9MM
681
9C04021A3010FLHF3
RC0402FR-07100RL
CR0402-16W-164JT
VENKEL
VENKEL
VENKEL
VENKEL
VENKEL
VENKEL
ROHM
PANASONIC-ECG
ROHM
ROHM
ROHM
VENKEL
LITTLEFUSE INC
LITTLEFUSE INC
ROHM
e-switch
FAIRCHILD
CR0402-16W-7321FT
CR0402-16W-1272FT
CR0402-16W-7681FT
CR0402-16W-102J
CR0402-16W-202J
CR0805-8W-471J
MCR01MZPF5112
ERJ-2RKF1403X
MCR01MZPJ334
MCR01MZPF1243
MCR01MZPF3922
CR0603-10W-1001FT
V5.5MLA0603H
V0402MHS03
MCR01MZPF6810
eg2472
NC7SB3157P6X
NATIONAL
SEMICONDUCT
ST
TEXAS_INSTRUM
ENTS
MAXIM
NATIONAL
SEMICONDUCT
WOLFSON
LM2937IMP-3.3
FAIRCHILD SEMICONDUC
SILICON
LABORATORIES
74LCX541TTR
SN74LVC1G17DBVR
MAX4233AUB
LP2986-5.0
WM8731
FSA266K8X
C8051F342GQ
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. On those boards items 29, 30, and 68—silkscreened as
J30, J19 and U9—will not be populated.
112
Rev. 0.7
Si47xx-EVB
Table 29. Si47xx-EVB Baseboard Rev 1.6 Bill of Materials (Continued)
Item
Qty
RefDes
Description
68
1
U9
69
70
1
1
X1
X2
IC,SM,CS8427DS,SPDIF_TRANSLATOR,
28-TSSO
32_768 kHZ,OSCILLATOR,SM
XTAL,12.288MHZ,18PF
71
12
72
1
R30,R32,R35,R37,R39,
R40,R41,R42,R92,R93,
R94,R95
J76
73
2
U23, U26
74
2
Diode,SM,SD103AW,Shottkey
diode
Screw Pan 440x3/4
75
2
Spacer nyln rnd 4x.25
76
3
Screw Pan 440x3/8
77
5
1/4 Tapped spacer
78
79
2
2
80
4
81
1
82
1
Res,sm,0402
Value
49.9
4P Plug 180Deg terminal block
Steel nut, Size 2-56 Width 0.187'
Steel Screw Head Diameter
Newark
0.162', Length 0.25', Size 2-56
Nylon Washer, Diameter 0.187',
Size #2
Battery Holder 9 V
"I" 6" 26AWG W/SKT 9 V Snap
Mfg/Vendor
Mfg/Vendor_PN
CIRRUS
CS8427-CZ
ECS_INC
CITIZEN AMERICA CORP
Venkel
ECS-327SMO
CS10-12.288MABJ-UT
MOUSER
ELECTRONICS
Diodes
651-1803594
MOUSER
ELECTRONICS
MOUSER
ELECTRONICS
MOUSER
ELECTRONICS
MOUSER
ELECTRONICS
Newark
18M6002
561-P440.75
CR0402-16W-49R9FT
SD103AW-7
561-K4.25
561-P440.375
561-TSP3
18M5986
Newark
94F9852
MOUSER
ELECTRONICS
MOUSER
ELECTRONICS
1BH080
121-0626/M-GR
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. On those boards items 29, 30, and 68—silkscreened as
J30, J19 and U9—will not be populated.
Rev. 0.7
113
Si47xx-EVB
Table 30. Si472x-EVB Rev 1.4 Bill of Materials
Item
Qty
RefDes
Description
Value
MFG/Vendor
Mfg/Vendor_PN
1
2
C4,C6
CAP,SM,0402,X7R
22PF
MURATA
GRM185R71E220KA61D
2
1
C2
CAP,SM,0402,X7R
22NF
MURATA
GRM185R71E223KA61D
3
2
C7,C10
CAP,SM,0402,X7R
0.1UF
MURATA
GRM185R71C104KA88D
4
2
C3,C5
CAP,SM,0603,X7R
0.47UF
VENKEL
C0603X7R160-474KNE
5
2
C1,C9
CAP,SM,0603,X7R
1NF
MURATA
GRM185R71E102KA61D
6
3
C11,C12,C13
CAP,SM,0402,X7R
100pF
MURATA
GRM1555C1H101JZ01D
7
2
C14,C15
CAP,SM,0603,X7R
0.33UF
VENKEL
C0603X7R160-334KNE
8
1
C8
RES,SM,0603
2pF
AVX
06035J2R0ABTTR
9
2
J1,J28
SMA,EDGE-MOUNT,GOLD
PLATED
YAZAKI
RA2EJ2-6G
10
1
J25
CONN, SM, 2X20, SFM
SAMTEC
SFM-120-02-S-D-A
11
3
J4,J5,J6
CONN, THRU--HOLE, MCX
JACK, .100 LAYOUT
NP
DIGI-KEY
J611-ND
12
1
J11
HEADER, 3X12
NP
SAMTEC
TSW-112-07-G-T
13
16
J3,J9,J10,J12,J13,
J14,J15,J16,J17,
J18,J19,J20,J21,
J22,J23,J24
SOLDER BUMP JUMPER,
RES, SM, 0402
14
2
J7,J8
CONN, TH, 1X3, HDR
NP
SAMTEC
TSW-103-07-G-S
NP
SAMTEC
TSW-102-07-G-S
DIGIKEY
CP-3543N-ND
15
1
J2
CONN, TH, 1X2, HDR
16
1
J29
CONN,AUDIO
JACK,3.5MM,STEREO
17
3
F1,F2,F3
Ferrite Bead,SM,0603
2500 ohm
MURATA
BLM18BD252SN1D
18
1
L2
IN, SM, 0603
120nH
MURATA
lqw18anr12j00d
19
1
L5
IN, SM, 0603
270NH
MURATA
LQW18ANR27J00D
20
1
L1
IN, SM, 0603
0R
VENKEL
CR0603-16W-000T
21
1
L3
IN, SM, 0603
220nh
MURATA
LQW18ANR22J00D
22
1
R2
RES, SM, 0603
0R
VENKEL
CR0603-16W-000T
23
1
R4
RES, SM, 0603
49.9R
VENKEL
CR0603-16W-49r9T
24
1
R10
RES, SM, 0402
10k
VENKEL
CR0402-16W-103JT
25
1
R1
RES, SM, 0603
10K
VENKEL
CR0603-16W-103JT
26
4
R3,R7,R8,R9
RES, SM, 0402
20K
VENKEL
CR0402-16W-203JB
27
1
R5
RES, SM, 0402
0
VENKEL
CR0402-16W-000T
28
4
R6,R11,R12,R13
RES, SM, 0402
604
VENKEL
CR0402-16W-604R0JB
29
1
U1
IC, SM, SI4720,MLP20 3X3
SILAB
SI4720
30
1
U2
IC,SM,HEADPHONE AMP
NATIONAL
SEMICONDUCTOR
LM4910MA
31
1
U4
IC,SM,ESD PROTECTION
DIODE,SOT23-3
CALIFORNIA MICRO
DEVICES
CM1213-01ST
32
1
X1
XTAL, SM, 32.768
Epson
FC-135
33
1
A1
4710 RF Daughter Card PCB
114
Rev. 0.7
Si47xx-EVB
Table 30. Si472x-EVB Rev 1.4 Bill of Materials (Continued)
Item
Qty
RefDes
Description
Value
MFG/Vendor
Mfg/Vendor_PN
Si471x-EVB Rev 1.4 Population Options
1
C10
CAP,SM,0402,X7R
NP
2
C1,C9
CAP,SM,0603,X7R
NP
3
C11,C12,C13
CAP,SM,0402,X7R
NP
2
C14,C15
CAP,SM,0603,X7R
NP
1
J28
SMA,EDGE-MOUNT,GOLD
PLATED
NP
1
J29
CONN,AUDIO
JACK,3.5MM,STEREO
NP
3
F1,F2,F3
Ferrite Bead,SM,0603
NP
1
L5
IN, SM, 0603
NP
1
L1
IN, SM, 0603
NP
1
L3
RES, SM, 0603
NP
1
R10
RES, SM, 0402
NP
VENKEL
CR0402-16W-103JT
4
R3,R7,R8,R9
RES,SM,0603
NP
VENKEL
CR0603-16W-203JB
1
U2
IC,SM,HEADPHONE AMP
NP
NATIONAL
SEMICONDUCTOR
LM4910MA
1
U4
IC,SM,ESD PROTECTION
DIODE,SOT23-3
NP
CALIFORNIA MICRO
DEVICES
CM1213-01ST
Si4705-06-EVB Rev 1.4 Population Options
2
C3,C5
RES, SM, 0603
0R
VENKEL
CR0603-16W-000T
1
C8
RES, SM, 0603
0R
VENKEL
CR0603-16W-000T
1
R4
RES, SM, 0603
NP
VENKEL
CR0603-16W-000T
2
R12,R13
RES, SM, 0402
0R
VENKEL
CR0402-16W-000JB
Rev. 0.7
115
Si47xx-EVB
Table 31. Si4731-35-EVB Rev 1.4 Bill of Materials
Item
Qty
RefDes
Description
Value
MFG/Vendor
MFG/Vendor_PN
1
2
C1,C7
CAP,SM,0402,X7R
0.1UF
MURATA
GRM155R71C104KA88D
2
1
C2
CAP,SM,0402,X7R
22NF
MURATA
GRM155R71E223KA61D
3
3
C9,C10,C11
CAP,SM,0402,X7R
100PF
MURATA
GRM1555C1H101JZ01D
4
3
C3,C5,C12
CAP,SM,0603,X7R
1NF
VENKEL
C0603C0G500-103JNE
5
2
C4,C6
CAP,SM,0402,X7R
22PF
VENKEL
C0402C0G500-220JNE
6
2
C8,C13
CAP,SM,0603,X7R
0.47UF
7
2
C14,C15
CAP,SM,0603,X7R
0.33UF
VENKEL
C0603X7R160-334KNE
8
3
F1,F2,F3
FERRIET,SM,0603
2500ohm
MURATA
BLM18BD252SN1D
9
2
J1,J26
SMA,EDGE-MOUNT,GOLD
PLATED
YAZAKI
RA2EJ2-6G
10
1
J2
TERMINAL BLOCK, 12 POSITION
SAMTEC
LCW-112-09-S-S-230-RA
11
14
12
2
J3,J27,J28
SOLDER BUMP JUMPER, RES,
SM, 0402
NP
13
3
J4,J5,J6
CONN, THRU--HOLE, MCX
JACK, .100 LAYOUT
NP
DIGI-KEY
J611-ND
14
2
J7,J8
CONN, TH, 1X3, HDR
NP
SAMTEC
TSW-103-07-G-S
15
1
J11
HEADER, 3X12
NP
SAMTEC
TSW-112-07-G-T
16
1
J24
CONN,AUDIO
JACK,3.5MM,STEREO
DIGIKEY
CP-3543N-ND
17
1
J25
CONN,SM,2X20,SFM
SAMTEC
SFM-120-02-S-D-A
18
2
L1
IND,SM,0603
220nH
MURATA
LQW18ANR22J00D
19
2
L2
IND,SM,0603
0
VENKEL
CR0603-16W-000T
20
1
L4
IND,SM,0603
270nH
MURATA
LQW18ANR27J00D
21
1
L3
IND,SM,0603
NP
MURATA
LQW18ANR12J00D
22
4
R1,R2,R3,R4
RES,SM,0402
20K
VENKEL
CR0603-16W-203JB
23
1
R6
RES,SM,0603
NP
24
1
R7
RES,SM,0402
10K
VENKEL
CR0402-16W-103JT
25
8
R9,R10,R11,R12,R
13,C17,C18,C19
RES,SM,0402
0R
VENKEL
CR0402-16W-000T
26
4
R5,R8
RES,SM,0402
NP
27
1
C16
RES,SM,0402
604
VENKEL
CR0402-16W-604r0T
28
1
U1
SI4730
SILABS
4730
29
1
U3
IC,SM,HEADPHONE AMP
NATIONAL SEMICONDUCTOR
LM4910MA
30
2
U4,U5
IC,SM,ESD PROTECTION
DIODE,SOT23-3
CALIFORNIA MICRO
DEVICES
CM1213-01ST
116
J9,J10,J12,J13,J1 SOLDER BUMP JUMPER, RES,
SM, 0402
4,J15,J16,J17,J18,
J19,J20,J21,J22,J
23
Rev. 0.7
Si47xx-EVB
Table 31. Si4731-35-EVB Rev 1.4 Bill of Materials
Item
Qty
RefDes
Description
Value
MFG/Vendor
MFG/Vendor_PN
31
2
U2,U6
IC,SM,ESD PROTECTION
DIODE,SOT23-3
NP
CALIFORNIA MICRO
DEVICES
CM1213-01ST
32
1
X1
OSC,SM,Crystal 32.768KHz,Chip
32.768KHz
Epson
FC-135
MURATA
LQW18AN33RJ00D
NP = Not Populated
Si4707-EVB Rev 1.4 Population Options
4
C1,C9,C10,C11
CAP,SM,0402,X7R
NP
2
C4,C6
CAP,SM,0402,X7R
NP
3
C8,C12,C13
CAP,SM,0603,X7R
NP
2
C14,C15
CAP,SM,0603,X7R
NP
3
F1,F2,F3
FERRIET,SM,0603
NP
1
J1
SMA,EDGE-MOUNT,GOLD
PLATED
NP
1
J24
CONN,AUDIO
JACK,3.5MM,STEREO
NP
1
L1
IND,SM,0603
33nh
1
L2
IND,SM,0603
NP
4
R1,R2,R3,R4
RES,SM,0402
NP
1
R7
RES,SM,0402
NP
1
U3
IC,SM,HEADPHONE AMP
NP
1
X1
OSC,SM,Crystal 32.768KHz,Chip
NP
Rev. 0.7
117
Si47xx-EVB
Table 32. Si474x Daughtercard (Rev 1.3) Bill of Materials
Item
Qty
RefDes
Description
Value
Mfg/Vendor
Mfg/Vendor_pn
1
2
C11,C16
CAP,SM,0402,X7R
NP*
2
3
C6,C13,C15
CAP,SM,0402,X7R
0.1 µF
Venkel
C0402X7R160-104JNE
3
2
C1,C19
CAP,SM,0402,X7R
22 nF
Venkel
C0402X7R250-223JNE
4
1
C3
CAP,SM,0402,C0G
270 pF
Venkel
C0402C0G500-271JNE
5
1
C2
CAP,SM,0402,C0G
18 pF
Venkel
C0402C0G500-180JNE
6
3
C5,C8,C9
CAP,SM,0603,X7R
0.47 µF
Venkel
C0603X7R160-474JNE
7
1
C7
CAP,SM,0402,X7R
1200 pF
Venkel
C0402X7R250-122JNE
8
1
C10
CAP,SM,0402,COG
3.9 pF
Venkel
C0402C0G5003R9JNE
9
3
C17,C18,C12
CAP,SM,1206,X5R
100 µF
Venkel
C1206X7R063-107JNE
10
1
C4
CAP,SM,0603,X7R
0.018 µF
Venkel
C0402X7R250-183JNE
11
1
C16
CAP,SM,0402,COG
2 pF
Venkel
C0402C0G5002R0CNP
12
1
J4
BNC,EDGE-MOUNT,GOLD
PLATED
Mouser
361V509E
13
18
J1,J2,J6,J7,J8,J9,
J10,J12,J13,J15,
J16,J17,J18,J19,
J20,J22,J24,J27
SOLDER BUMP JUMPER, RES,
SM, 0402
14
2
J21,J23
CONN, TH, 1X4, HDR
NP*
15
4
J11,J14,J25,J26
CONN, TH, 1X3, HDR
NP*
16
1
J5
HEADER, 3X12
NP*
17
1
J28
CONN,SM,2X20,SFM
Samtec
SFM-120-02-S-D-A
18
1
L1
IND,SM,0603
120 nH
Murata
LQW18ANR12J00D
19
1
L2
IND,SM,0603
100 nH
Murata
LQW18ANR10J00D
20
1
L3
IND,SM,1008
220 µH
Coilcraft
1008PS-224KLB
21
1
L4
IND,SM,4018
1 mH
Coilcraft
LPS4018-105ML
22
2
L6,L7
IND,SM,0805
6.8 µH
Coilcraft
0805PS-682KB
23
1
L8
IND,TH,7PD
47 mH
Toko
388BN-1211Z
24
1
L9
IND,TH,RFB0807
2.7 mH
Coilcraft
RFB0807-272L
25
1
L10
IND,SM,1008
33 µH
Coilcraft
1008PS-333KLB
26
1
R3
RES,SM,0402
10 
Venkel
CR0402-16W-100JT
27
1
R8
RES,SM,0402
1
Venkel
CR0402-16W-1R0JT
28
1
R1
RES,SM,0603
10 M
Venkel
CR0603-16W-106JT
29
3
C14,R21,R24
RES,SM,0402
0
Venkel
CR0402-16W-000T
30
1
R11
RES,SM,0402
10 k
Venkel
CR0402-16W-103JT
31
1
L5
RES,SM,0603
150 nH
Murata
LQW18ANR15J00D
32
4
R22,R23
RES,SM,0402
4.02 k
Venkel
CR0402-16W-4021FT
33
1
R2
RES,SM,0402
24.3 K
Venkel
CR0402-16W-2432FT
34
1
R13
RES,SM,0402
4.53 K
Venkel
CR0402-16W-4531FT
118
Rev. 0.7
Si47xx-EVB
Table 32. Si474x Daughtercard (Rev 1.3) Bill of Materials (Continued)
Item
Qty
RefDes
Description
Value
Mfg/Vendor
Mfg/Vendor_pn
35
1
R16
RES,SM,0402
604 
Venkel
CR0402-16W-6040FT
36
3
R5,R18,R19
RES,SM,0402
4.7 k
Venkel
CR0402-16W-472JT
37
5
R4,R6,R7,R9,R10
RES,SM,0402
249 
Venkel
CR0402-16W-2490FT
38
3
R12,R14,R15
RES,SM,0402
NP*
39
2
R17,R20
RES,SM,0402
22 k
Venkel
CR0402-16W-223JT
40
1
Q6
FET,SM,SOT-23
Fairchild Semi
2N7002
41
2
Q1,Q2
FET,SM,SOT-23
NXP
BF862
42
2
Q3,Q4
TRANSISTOR,NPN,,SM,
SOT-23
Fairchild Semi
MMBTH10
43
1
Q5
TRANSISTOR,PNP,SM,
SOT-23
Fairchild Semi
MMBTH81
44
1
U1
IC,SM,QFN4X4 24P
Silicon Labs
Si474X
45
2
U2,U4
IC,SM,ESD PROTECTION
DIODE,SOT23-3
California Micro
Devices
CM1213-01ST
46
1
U3
IC,SM,QUAD NORGATE,TSOP14
TI
74LVC02APW
*Note: NP = Not Populated
Rev. 0.7
119
Si47xx-EVB
Table 33. Si4749 Daughtercard (Rev 1.1) Bill of Materials
Item
Qty
RefDes
Description
Value
Mfg/Vendor
Mfg/Vendor_pn
1
3
C4,C6,C7
CAP,SM,0402,X7R
0.1 µF
Venkel
C0402X7R160-104JNE
2
1
C2
CAP,SM,0402,X7R
22 nF
Venkel
C0402X7R250-223JNE
3
2
C4,C6
CAP,SM,0402,C0G
24 pF
Venkel
C0402C0G500-240JNE
4
1
C1
CAP,SM,0402,C0G
100 pF
Venkel
C0402C0G500-101JNE
5
1
C8
CAP,SM,0402,X7R
NP*
6
2
C3,C5
CAP,SM,0402,COG
0.01 µF
Venkel
C0402X7R250-103JNE
7
1
J1,J2
SMA,EDGE-MOUNT,GOLD
PLATED
Yazaki
RA2EJ2-6G
8
14
J9,J10,J12,J13,J14,J
15,J16,J17,J18,J19,J
20,J21,J22,J23
SOLDER BUMP JUMPER,
RES, SM, 0402
9
2
J27,J28
SOLDER BUMP JUMPER,
RES, SM, 0402
NP*
10
3
J4,J5,J6
CONN, THRU--HOLE, MCX
JACK, .100 LAYOUT
NP*
Digi-Key
J611-ND
11
2
J7,J8
CONN, TH, 1X3, HDR
NP*
SAMTEC
TSW-103-07-G-S
12
1
J11
HEADER, 3X12
NP*
SAMTEC
TSW-112-07-G-T
13
1
J25
CONN,SM,2X20,SFM
14
1
L1
IND,SM,0603
180 nH
15
1
L2
IND,SM,0603
NP
16
1
R1
RES,SM,0603
17
2
R2,R4
18
6
19
20
SAMTEC
SFM-120-02-S-D-A
Murata
LQW18ANR18J00D
10 M
Venkel
CR0603-16W-106T
RES,SM,0402
64.9 
Venkel
CR0402-16W-64R9FT
R3,R7,R9
RES,SM,0402
0
Venkel
CR0402-16W-000T
2
R6,R10
RES,SM,0402
2 k
Venkel
CR0402-16W-202T
1
R5
RES,SM,0402
604 
Venkel
CR0402-16W-604R0T
21
1
R9,.R11
RES,SM,0402
10 
Venkel
CR0402-16W-100JT
22
1
R8
RES,SM,0402
NP*
23
2
Q1,Q2
FET,SM,SOT-23
NXP
BF862
24
1
U2
SI4749
Silicon Labs
Si4749
25
1
U1
IC,SM,ESD PROTECTION
DIODE,SOT23-3
California Micro
Devices
CM1213-01ST
1
A1
PCB,Si4749EVB
Silicon Labs
*Note: NP = Not Populated
120
Rev. 0.7
Si47xx-EVB
Table 34. Si4730 Ferrite Medium Antenna Rev 1.2 Bill of Materials
Item
Qty
RefDes
Description
1
1
J4
2
1
3
1
4
1
Value
Mfg/Vendor
Mfg/Vendor_PN
Socket Header, TH, Friction notch
SAMTEC
SSW-112-02-G-P-RA
U1
Medium Ferrite Core
Silabs
SL4X30MW110T
A1
PCB, Ferrite Antenna Board
Hellermann Tyton
T30R9C2
Zip Tie 6in
NP = Not Populated
Table 35. Si473x Ferrite Large Antenna Rev 1.2 Bill of Materials
Item
Qty
RefDes
Description
1
1
J4
2
1
3
1
4
2
Value
Mfg/Vendor
Mfg/Vendor_PN
Socket Header, TH, Friction notch
SAMTEC
SSW-112-02-G-P-RA
U1
Large Ferrite Core
Silabs
SL5X7X100MW70T
A1
PCB, Ferrite Antenna Board
Hellermann Tyton
T30R9C2
Zip Tie 6in
Table 36. Si473x Airloop Antenna Rev 1.2 Bill of Materials
Item
Qty
RefDes
Description
1
1
J1
2
1
J2
3
1
4
1
Value
Mfg/Vendor
Mfg/Vendor_PN
Compression Connector (Speaker jack)
KOBI(Mouser)
151-0300-E
Socket Header, TH, Friction notch
SAMTEC
SSW-112-02-G-P-RA
U1
Transformer, TH, Custom
SiLabs
SL9X5X4MWTF
A1
PCB, Air Loop Antenna Board
NP = Not Populated
Rev. 0.7
121
Si47xx-EVB
Table 37. Si473x SW/WB Antenna Bill of Materials
Item
Qty
RefDes
Description
Value
Mfg/Vendor
1
1
C1
CAP,SM,0402,C0G
18 pF
VENKEL
2
1
C2
CAP,SM,0402,C0G
33 pF
VENKEL
3
1
J1
Socket Header, TH,
Friction notch
SAMTEC
4
1
J2
BNC,EDGE-MOUNT,
GOLD PLATED
MOUSER
5
1
J3
Large Ferrite Core
Silabs
6
1
L1
IND,SM,0603
470 nH
MURATA
7
1
L2
IND,SM,1008
4.7 µH
COILCRAFT
8
1
S1
SPDT Sw itch
E-switch
9
1
U1
IC,SM,ESD PROTECTION
DIODE, SOT23-3
CALIFORNIA
MICRO DEVICES
10
1
A1
PCB, Short Wave
Antenna Board
11
2
X1, X3
Zip Tie 6in
C1 and C2
RES, SM, 0402
0
VENKEL
L1
IND, SM, 0603
68 nH
MURATA
Hellerman Tyton
NP = Not Populated
Population Options
Weather Band Antenna Card
L2
NP
S1
NP
NP = Not Populated
Table 38. Si474x Antenna Dummy Card Rev 1.0 Bill of Materials
Item
Qty
RefDes
Description
Value
Mfg/Vendor
Mfg/Vendor_PN
1
1
C1
CAP,SM,0603,C0G
15 pF
VENKEL
C0603C0G500-150JNE
2
1
C2
CAP,SM,0603,C0G
15 pF
VENKEL
C0603C0G500-620JNE
3
2
J1, J2
SMA,EDGE-MOUNT,
GOLD PLATED
62 pF
MURATA
RA2EJ2-6G
4
1
R1
RES,SM,0603
49.9 R
VENKEL
CR0603-16W-490T
NP = Not Populated
122
Rev. 0.7
Si47xx-EVB
12. Schematics
Figure 83. Si47xx-EVB Baseboard Rev 1.6 Block Diagram
12.1. Si47xx-EVB Baseboard Rev 1.6
Rev. 0.7
123
Figure 84. Si47xx-EVB Baseboard Rev 1.6 Daughtercard Interface
Si47xx-EVB
124
Rev. 0.7
Figure 85. Si47xx-EVB Baseboard Rev 1.6 Signal Multiplexers
Si47xx-EVB
Rev. 0.7
125
Figure 86. Si47xx-EVB Baseboard Rev 1.6 CODEC
Si47xx-EVB
126
Rev. 0.7
Figure 87. Si47xx-EVB Baseboard Rev 1.6 Audio Input and SPDIF Translator
Si47xx-EVB
Note: For EN55020 compliance, please add the following components to L-OUT and R-OUT @ J6: 1 µF from C5 x C7 to GND
(one for each output), 22.6 in series with C5 x C7 (one for each output).
Rev. 0.7
127
Figure 88. Si47xx-EVB Baseboard Rev 1.6 MCU
Si47xx-EVB
128
Rev. 0.7
Figure 89. Si47xx-EVB Baseboard Rev 1.6 Power Supply
Si47xx-EVB
Rev. 0.7
129
Si47xx-EVB
Figure 90. Si471x/2x-EVB Daughtercard (Rev 1.4)
12.2. Si471x/2x-EVB Daughtercard Rev 1.4
130
Rev. 0.7
Si47xx-EVB
Figure 91. Si471x/2x-EVB Daughtercard (Rev 1.4) Headphone Schematic
(applies only to Si4704/05/06/2x/8x)
Si471x/2x-EVB Daughtercard (Rev 1.4) ships configured for external RCLK, supplied by the Si47xx-EVB
Baseboard. To configure for crystal oscillator operation:
1. Remove R5.
2. Remove short at J24.
3. Short J26.
4. Short J27.
5. Select "Use XOSCEN" at GUI initialization.
Note: Digital Audio Output is not available when configured for crystal oscillator.
Rev. 0.7
131
Si47xx-EVB
12.3. Si473x-EVB Daughtercard Rev. 1.4
Figure 92. Si473x-EVB Daughtercard Rev. 1.4 (1 of 2)
7
132
Rev. 0.7
Si47xx-EVB
Figure 93. Si473x-EVB Daughtercard Rev 1.4 (2 of 2)
Si473x-EVB Daughtercard (Rev 1.4) ships configured for external RCLK, supplied by the Si47xx-EVB Baseboard.
To configure for crystal oscillator operation:
1. Remove R9.
2. Remove R10.
3. Short J27.
4. Short J28.
5. Select "Use XOSCEN" at GUI initialization.
Note: Digital Audio Output is not available when configured for crystal oscillator.
Rev. 0.7
133
Si47xx-EVB
Figure 94. Si474x-EVB Daughtercard Rev 1.3 (1 of 2)
12.4. Si474x–EVB Daughtercard Rev 1.3
134
Rev. 0.7
Figure 95. Si474x-EVB Daughtercard Rev 1.3 (2 of 2)
Si47xx-EVB
Rev. 0.7
135
Si47xx-EVB
Figure 96. Si4749-EVB Daughtercard Rev 1.1 (1 of 2)
12.5. Si4749-EVB Daughtercard Rev 1.1
136
Rev. 0.7
Si47xx-EVB
Figure 97. Si4749-EVB Daughtercard Rev 1.1 (2 of 2)
Note: C4, C6, R9, and R11 manually added to Si4749EVB Rev 1.0 to create Si4749EVB Rev 1.1.
Rev. 0.7
137
Si47xx-EVB
12.6. Antenna Card Schematics
12.6.1. Si473x Ferrite Antenna Card Rev 1.2
Figure 98. Ferrite Antenna Card Rev 1.2
12.6.2. Si473x Air Loop Antenna Card Rev 1.2
Figure 99. Airloop Antenna Card Rev 1.2
138
Rev. 0.7
Si47xx-EVB
12.6.3. Si473x SW/WB Antenna Card Rev 1.3
Note: If an SW band is selected using the SW/WB Antenna Card, set the varactor to 1 for best performance. LW
not supported with SW/WB Antenna Card.
Figure 100. Si473x SW/WB Antenna Card Rev 1.3
12.6.4. Si474x Antenna Dummy Card Rev 1.0
Figure 101. Si474x Antenna Dummy Card Rev 1.0
Rev. 0.7
139
Si47xx-EVB
13. Layout
13.1. Si47xx-EVB Baseboard Rev 1.6
Figure 102. Si47xx-EVB Baseboard Rev 1.6—Primary Assembly Silkscreen
Figure 103. Si47xx-EVB Baseboard Rev 1.6—Secondary Assembly Silkscreen
140
Rev. 0.7
Si47xx-EVB
Figure 104. Si47xx-EVB Baseboard Rev 1.6—Primary Side
Figure 105. Si47xx-EVB Baseboard Rev 1.6—Ground Plane
Rev. 0.7
141
Si47xx-EVB
Figure 106. Si47xx-EVB Baseboard Rev 1.6—Power Plane
Figure 107. Si47xx-EVB Baseboard Rev 1.6—Secondary Side
142
Rev. 0.7
Si47xx-EVB
13.2. Si471x/2x-EVB Daughtercard Rev 1.4
Figure 108. Si471x/2x-EVB Daughtercard (Rev 1.4)—Primary Assembly Silkscreen
Figure 109. Si471x/2xEVB Daughtercard (Rev 1.4)—Secondary Assembly Silkscreen
Rev. 0.7
143
Si47xx-EVB
Figure 110. Si471x/2x-EVB Daughtercard (Rev 1.4)—Primary Side
Figure 111. Si471x/2x-EVB Daughtercard (Rev 1.4)—Ground Plane
144
Rev. 0.7
Si47xx-EVB
Figure 112. Si471x/2x-EVB Daughtercard (Rev 1.4)—Power Plane
Figure 113. Si471x/2x-EVB Daughtercard (Rev 1.4)—Secondary Side
Rev. 0.7
145
Si47xx-EVB
13.3. Si473x-EVB Daughtercard Rev 1.4
Figure 114. Si473x-EVB Daughtercard Rev 1.4 - Primary Assembly Silkscreen
Figure 115. Si473x-EVB Daughtercard Rev 1.4 - Secondary Assembly Silkscreen
146
Rev. 0.7
Si47xx-EVB
Figure 116. Si473x-EVB Daughtercard Rev 1.4—Primary Side
Figure 117. Si473x-EVB Daughtercard Rev 1.4—Ground Plane
Rev. 0.7
147
Si47xx-EVB
Figure 118. Si473x-EVB Daughtercard Rev 1.4—Power Plane
Figure 119. Si473x-EVB Daughtercard Rev 1.4—Secondary Side
148
Rev. 0.7
Si47xx-EVB
13.4. Si474x-EVB Daughtercard Rev 1.3
Figure 120. Si474x-EVB Daughtercard Rev 1.3—Primary Assembly Silkscreen
Rev. 0.7
149
Si47xx-EVB
Figure 121. Si474x-EVB Daughtercard Rev 1.3—Primary Side
Figure 122. Si474x-EVB Daughtercard Rev 1.3—Ground Plane
150
Rev. 0.7
Si47xx-EVB
13.5. Si4749-EVB Daughtercard Rev 1.1
Note: For Figures 123 through 128: C4, C6, R9, and R11 manually added to Si4749EVB Rev 1.0 to create Si4749 EVB Rev
1.1.
Figure 123. Si4749-EVB Daughtercard Rev 1.1—Primary Side Silkscreen
Figure 124. Si4749-EVB Daughtercard Rev 1.1—Secondary Side Silkscreen
Rev. 0.7
151
Si47xx-EVB
Figure 125. Si4749-EVB Daughtercard Rev 1.1—Primary Side
Figure 126. Si4749-EVB Daughtercard Rev 1.1—Ground Plane
152
Rev. 0.7
Si47xx-EVB
Figure 127. Si4749-EVB Daughtercard Rev 1.1—Power Plane
Figure 128. Si4749-EVB Daughtercard Rev 1.1—Secondary Side
Rev. 0.7
153
Si47xx-EVB
13.6. Antenna Cards
13.6.1. Si473x Ferrite Antenna Card Rev 1.2
Figure 129. Si473x Ferrite Antenna Card Rev 1.2—Primary Side Silkscreen
Figure 130. Si473x Ferrite Antenna Card Rev 1.2—Secondary Side Silkscreen
154
Rev. 0.7
Si47xx-EVB
Figure 131. Si473x Ferrite Antenna Card Rev 1.2—Primary Side
Figure 132. Si473x Ferrite Antenna Card Rev 1.2—Secondary Side
Rev. 0.7
155
Si47xx-EVB
13.6.2. Si473x Air Loop Antenna Card Rev 1.2
Figure 133. Si473x Air Loop Antenna Card Rev 1.2—Primary Side Silkscreen
Figure 134. Air Loop Antenna Card Rev 1.2—Secondary Side Silkscreen
156
Rev. 0.7
Si47xx-EVB
Figure 135. Si473x Air Loop Antenna Card Rev 1.2—Primary Side
Figure 136. Si473x Air Loop Antenna Card Rev 1.2—Secondary Side
Rev. 0.7
157
Si47xx-EVB
13.6.3. Si473x SW/WB Antenna Card Rev 1.3
Figure 137. Si473x SW/WB Antenna Card Rev 1.3—Primary Side Silkscreen
Figure 138. Si473x SW/WB Antenna Card Rev 1.3—Secondary Side Silkscreen
158
Rev. 0.7
Si47xx-EVB
Figure 139. Si473x SW/WB Antenna Card Rev 1.3—Primary Side
Figure 140. Si473x SW/WB Antenna Card Rev 1.3—Secondary Side
Rev. 0.7
159
Si47xx-EVB
13.6.4. Si474x Antenna Dummy Card Rev 1.0
Figure 141. Si474x Antenna Dummy Card Rev 1.1—Primary Side Silkscreen
Figure 142. Si474x Antenna Dummy Card Rev 1.0—Secondary Side Silkscreen
160
Rev. 0.7
Si47xx-EVB
Figure 143. Si474x Antenna Dummy Card Rev 1.0—Primary Side
Figure 144. Si474x Antenna Dummy Card Rev 1.0—Secondary Side
Rev. 0.7
161
Si47xx-EVB
NOTES:
162
Rev. 0.7
Si47xx-EVB
DOCUMENTATION CHANGE LIST
Revision 0.1 to Revision 0.2

Updated Product Family in Table 1 on page 1.
Updated Si4740/41 Property List in Figure on page
67 and Table 15 on page 66.
 Clarified varactor recommendation with SW
operation using SW/WB Antenna Card.
 Added instructions for daughtercard configurations
with crystal oscillator operation.
 Added Si4707 and SAME support to Section 7.

Revision 0.2 to Revision 0.3

Added Si4742/43 support.
Revision 0.3 to Revision 0.4

Removed Si4706, Si4707, and Si474x NDA
information from document.
Revision 0.4 to Revision 0.5


Updated for new 4.0 GUI version
Updated EVB BOM and Schematics to 1.6
Revision 0.5 to Revision 0.6

Added information on State Management
 Updated figures to represent Silicon Labs Audio GUI
version 07.2.0
Revision 0.6 to Revision 0.7

Added Si4706/07/4x-EVB information
Rev. 0.7
163
Si47xx-EVB
CONTACT INFORMATION
Silicon Laboratories Inc.
400 West Cesar Chavez
Austin, TX 78701
Tel: 1+(512) 416-8500
Fax: 1+(512) 416-9669
Toll Free: 1+(877) 444-3032
Email: [email protected]
Internet: www.silabs.com
The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice.
Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from
the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features
or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to
support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where personal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized application, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages.
Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.
Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.
164
Rev. 0.7
Mouser Electronics
Authorized Distributor
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