USB3503 Evaluation Board Manual

USB3503 Evaluation Board Manual
USB3503 Evaluation Board Manual
Copyright © 2011 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information
sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed
for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office
to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor
devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms
and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement").
The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly
sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product
failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further
testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be
obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered trademark of Standard Microsystems Corporation (“SMSC”). Product names and
company names are the trademarks of their respective holders.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES
ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT,
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FORM OF ACTION, WHETHER BASED ON CONTRACT; TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR
OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
SMSC USB3503 EVB
USER MANUAL
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
1 Introduction
This user manual is for the USB3503 Evaluation board. This board can be used to test and evaluate
the functionality of the USB3503 and is ideal for early system integration and software development.
The USB3503 EVB provides access to the HSIC upstream and USB downstream ports, as well as the
I2C communication pins.
SMSC also has evaluation software that can be used with the USB3503 EVB connected to a Total
Phase Aardvark adaptor. This software allows the user to configure the USB3503 in different ways
before enumeration as well as monitor and manipulate select status registers during enumeration. The
software can be used to prototype microprocessor software, evaluate the different configurations, and
test how the desired configuration fits into the entire system.
2 Operation
2.1
Contents of the Kit
The USB3503 EVB includes the basic equipment necessary to evaluate the USB3503. The items
included in the kit are:
1. USB3503 EVB
2. 5V DC Power Supply
3. Documentation and Software CD
The kit does not include any downstream USB devices, I2C master hardware, or other components
for board customization.
2.2
Initial Bring Up
The USB3503 EVB has a default configuration that allows it to operate as a stand alone hub. To begin,
connect the U.FL connectors to the HSIC host. Then, plug the evaluation board into the 5V power
supply. The USB3503 EVB will enumerate as a Generic USB Hub, with the VID and PID equal to the
default values found in the USB3503 Datasheet.
The default configuration of the USB3503 is to enumerate as a Self Powered Hub. This means that,
according to the USB 2.0 specification, the downstream ports are only allowed to provide 500mA of
current to the downsteam device.
Refer to the next chapters to see the customization options associated with the evaluation kit.
3 Hardware
The USB3503 EVB is a board that demonstrates the capabilities of the USB3503. The board consists
of the HSIC upstream and USB downstream ports, a INT_N LED for visual confirmation of the
SMSC USB3503 EVB
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USER MANUAL
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
interrupts configured, a header exposing the I2C pins, and additional circuitry that is used for I2C
communication.
Downstream
USB
USB3503
Digital IO
Downstream
USB
Downstream
USB
LED
Upstream
HSIC
Figure 3.1 Block Diagram of the USB3503 EVB
3.1
HSIC and USB Ports
The downstream USB ports are mounted on the edges of the USB3503 EVB. The downstream ports
use the standard USB Type A receptacle. The label for the port is located near the receptacle. The
HSIC upstream port uses U.FL connectors for Data and Strobe.
Downstream3
Downstream2
Downstream1
J3: Strobe
J2: Data
Figure 3.2 Upstream and Downstream Ports
3.2
Test Points, Switches and LEDs
There are multiple test points to confirm that the USB3503 EVB is powered properly. TP1 and TP6
connect to GND, TP2 connects to the VBAT pin, and TP3 connects to the VDD_CORE_REG pin.
SMSC USB3503 EVB
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USER MANUAL
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
The USB3503 EVB also has three switches to manually control the RESET_N and HUB_CONNECT
inputs to the part. Figure 3.3 shows the location of the test points (Red) and switches (Yellow).
The USB3503 SCL, SDA, RESET_N, HUB_CONNECT and INT_B pins are also exposed on the J1
header. These pins are compatible with the Total Phase Aardvark pinout, where pin 1 of the Aardvark
connector connects to pin 1 of header J1 (Refer to Figure 4.1 for the proper way to connect the
Aardvark). The INT_N pin is also connected to LED1 to indicate that an interrupt has occurred. The
LED remains lit until the interrupt is cleared, as described in the USB3503 datasheet.
TP1
TP6
TP2
TP3
RESET
HUB_CONNECT
LED1
Pin1
NOT USED
J1
Figure 3.3 Test points, Switches, Header and LED
3.3
Configuration Resistors
There are eight different resistors used to configure the part when the RESET_N pin transitions from
Low (0V) to High(>1.25V). These resistors are used for the REF_SEL pins. Because these resistors
and pads pull up to the 1.8V regulator, any changes to these resistors will need to be done with the
board unpowered. The resistor pads are laid out in a manner that prevents the pull-up resistors from
being populated at the same time as the pull-down resistors, as shown in Figure 3.4. The following
tables show the proper configuration resistor population requirements for the desired results, the
resistor values should match those found in Section 6, "USB3503 EVB Bill of Materials".
Note: The Y1 Oscillator will need to be replaced with the proper frequency if the REF_SEL pins are
altered. Refer to Section 6, "USB3503 EVB Bill of Materials" for recommended oscillator
specifications.
Table 3.1 REF_SEL Options
SMSC USB3503 EVB
R18
R21
R27
R30
EMPTY
EMPTY
INSTALL
INSTALL
38.4
EMPTY
INSTALL
INSTALL
EMPTY
26.0 (Default)
INSTALL
EMPTY
EMPTY
INSTALL
19.2
4
USER MANUAL
REFCLK(MHZ)
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
Table 3.1 REF_SEL Options
R18
R21
R27
R30
INSTALL
INSTALL
EMPTY
EMPTY
REFCLK(MHZ)
12.0
Figure 3.4 Configuration Resistors
3.4
Additional Circuitry
The U1 Regulator provides 3.3V to the VBAT pin, and also supplies power to the 26MHz clock
oscillator. If a higher VBAT voltage is desired, remove R1 and supply the power through TP2.
The U2 Regulator provides 1.8V to the VDD_CORE_REG pin as well as providing the pull up voltage
for the digital control pins. To provide external power to the VDD_CORE_REG pin remove R8 and
supply the power through TP3.
The USB3503 can function with a single power supply; to do this remove R8 and place a 0Ohm
resistor on R9. This connects the VDD_CORE_REG pin to the VDD33_BYP pin allowing the
USB3503’s internal 3.3V regulator to supply the VDD_CORE_REG voltage.
Below is a summary of the different power options and what resistors need to be populated to support
these options:
Table 3.2 VBAT and VDD_CORE_REG source control
R8
R9
INSTALL
INSTALL
EMPTY
Onboard Regulator
Onboard Regulator
EMPTY
INSTALL
EMPTY
External (TP2)
Onboard Regulator
EMPTY
EMPTY
EMPTY
External (TP2)
External (TP3)
SMSC USB3503 EVB
VBAT SOURCE
VDD_CORE_REG
SOURCE
R1
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USER MANUAL
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
Table 3.2 VBAT and VDD_CORE_REG source control
VDD_CORE_REG
SOURCE
R1
R8
R9
VBAT SOURCE
INSTALL
EMPTY
INSTALL
Onboard Regulator
VDD33_BYP
EMPTY
EMPTY
INSTALL
External (TP2)
VDD33_BYP
Below are the locations of the resistors on the back side of the board:
R8
R1
R35
R9
R5
Figure 3.5 Regulator resistors
SMSC USB3503 EVB
6
USER MANUAL
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
4 Software
The USB3503 EVB comes with a CD that contains evaluation software that can be used with the Total
Phase Aardvark USB-I2C adaptor (not included with the Evaluation Kit). To install the software, run
Setup.exe, found on the CD. This will install the USB3503 Evaluation Software, the LabVIEW Runtime engine (to run the executable), and the Total Phase drivers to communicate with the Aardvark.
Once the software has been installed, locate and run the USB3503 Evaluation.exe program on the
computer. Connect the Aardvark to the USB3503 EVB with the red wire facing the power port, as in
Figure 4.1.
Figure 4.1 Aardvark Connection
The software allows the user to control the digital input pins RESET_N and CONNECT. It also can
monitor the INT_N pin for interrupts. There is a section to communicate with the I2C serial port, as well
as some quick configuration and customization options.
Figure 4.2 USB3503 Evaluation Screen
SMSC USB3503 EVB
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USER MANUAL
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
4.1
Digital Control
The RESET_N and HUB_CONNECT pins can be controlled in real time with the Digital Control array.
Each button in the array corresponds to the pin with the matching name. When the button is orange,
the pin is at logic level High. When the button is black the voltage is a logic level Low. Refer to the
green box in Figure 4.3 for the digital control array location.
Set the RESET_N pin low to reset the part and place it into the lowest power state. If the CONNECT
pin is low when the RESET pin transitions from low to high, the USB3503 will remain in a state that
allows the serial interface registers to be manipulated. To enumerate the hub, either write 00h to
register E7h, or drive the CONNECT pin high by pressing the CONNECT button in the Digital Control.
Once the USB3503 has enumerated, the serial interface registers should not be modified.
Notes: To prevent the Aardvark from driving against another voltage, the Aardvark is running in an
Open/Drain mode, therefore it is important that all switches on the board pull the pins up to
the Vcc value.
Figure 4.3 Digital Control (Green) and I2C (Yellow) sections
4.2
I2C Communication
The application also contains a general I2C register read/write section. The Bit and Description
display the serial interface register descriptions found in the USB3503 datasheet. The Register display
can be used to select the proper serial interface register to manipulate. Click on the Value or Bit box
above to change the value of the register. Once the desired value and register are selected, press the
Write button to change the value on the part. Click on the Read button and the Value and Bit boxes
will update the current value on the part. Refer to the USB3503 datasheet for a detailed description of
each register and operation of the device
SMSC USB3503 EVB
8
USER MANUAL
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
4.3
Quick Configuration and Customization
The USB3503 Evaluation program also contains some quick configuration and customization options
that automatically update the registers to match the desired configuration. The USB3503 can
enumerate as a Self Powered or Bus Powered Hub with 1, 2 or 3 downstream ports. The VID, PID,
DID and enumeration strings can also be customized to allow the USB3503 to enumerate with
whatever identification is desired.
To change these values; update the configuration section to the desired options, then press the
Configure button. The part will then reset, pull the CONNECT pin low and update the registers as
specified. To go with these options either raise the CONNECT pin, or press the Connect button.
Figure 4.4 Quick Configuration Options
SMSC USB3503 EVB
9
USER MANUAL
Revision 1.0 (08-22-11)
A
B
C
3
2
3
1
2
LED2
GREEN
R38
1k
F-BEAD
L1
1
R29
10k
DNP
R20
10k
VDD_PU
R28
10k
DNP
R19
10k
2
4
6
8
10
R27
10k
R18
10k
DNP
J1
5
Digital Control
VBUS
DNP
Power_Jack
J6
1
2
J5
2
1
3
5
7
9
R30
10k
DNP
R21
10k
ZERO
R34
10k
R35 DNP
ZERO
R5
1
R16
10k
1
3
R15
10k
3
2
1
SW3
R26
10k
C8
0.1uF
R10
10k
BYP
FB
OUT
3
2
1
2
R22
1k
R13
10k
R14
10k
VDD_PU
TPS79301
ENA
GND
IN
U2
C3
0.1uF
R4
10k
5V
BYP
FB
OUT
6
4
5
C4
0.01uF
C2
18pF
R3
30.1k
R2
51.0k
1
3
SW2
330
R37
R11
R7
30.1k
R6
14.3k
4
4
U5
C6
0.1uF 10k
2
OSC
C10
0.01uF
C7
18pF
OUT
VCC
E5
D5
B3
1
SCHMITT TRIG
VBAT
MTH1
C4
B4
E4
D4
C5
B5
A5
PORT_PWR
OCS_N
ZERO
R12
E3
3
4
ZERO
R9 DNP
ZERO
R8
ZERO
R1
MOM-ON
2
26.0 MHz
3.3V
GND
EN
Y1
VDD_PU
VDD33_BYP
C1
4.7uF
OSC
4
3
1
2
SW1
2
1
C5
4.7uF
1.8V VCC_CORE (200mA)
LED1
Green
R17
1k
4
5
6
TPS79301
ENA
GND
IN
U1
3.3V VBAT (200mA)
C11
0.1uF
Black
MH
3
1
MTH2
MH
USB3503_25WLCSP
PORT_PWR
OCS_N
REF_SEL0
REF_SEL1
INT_N
HUB_CONNECT
VDD33
RESET_N
SCL
SDA
TP1
VDD_CORE
Orange
REFCLK
TP3
1
U3
TP6
B2
VBAT
TP2
MTH4
DATA
STROBE
C18
0.1uF
MH
1
MTH3
VSS
VDD12_BYP
VDD33_BYP
RBIAS
USBDN3_DP
USBDN3_DM
USBDN2_DP
USBDN2_DM
MH
C3
D3
A2
A4
C1
D1
C2
D2
A1
B1
E2
E1
Orange
USBDN1_DP
USBDN1_DM
VBAT
Black
VBAT
A3
VDD_CORE_REG
D
J4
4
1
C19
1.0uF
VDD33_BYP
DN3_DP
DN3_DM
DN2_DP
DN2_DM
DN1_DP
DN1_DM
2
3
1
2
3
1
J3
J2
C12
4.7µF
STROBE
DATA
2
2
R36
12.0k
R23
10k
DNP
R24
10k
VBAT
PORT_PWR
7
C14 6
0.1uF
Date:
Size
B
Title
FLAGA
FLAGB
OUTA
OUTB
TP4
TP5
ZERO DNP
R32
ZERO
R31
MIC2026-1B
IN
GND
ENA
ENB
U4
VBUS
2
3
8
5
Monday, August 08, 2011
Document Number
SCH-7238AZ-A12
1
+
+
+
P4
DNP
VBUS
DD+
ID
GND
P5
DNP
VBUS
DD+
ID
GND
SHIELD1
SHIELD2
SHIELD3
SHIELD4
C13
120uF 5
6.3V 6
1
2
3
4
C9
120uF 5
6.3V 6
1
2
3
4
C15
120uF 5
6.3V 6
1
2
3
4
USB-A
SHLD1
SHLD2
VCC
DD+
GND
P3
USB-A
SHLD1
SHLD2
VCC
DD+
GND
P2
USB-A
SHLD1
SHLD2
VCC
DD+
GND
P1
6
7 SHLD1
8 SHLD2
9 SHLD3
10 SHLD4
11 SHLD5
SHLD6
C17
0.1uF USB MICRO-AB
1
2
3
4
5
1
2
3
4
5
6
7
8
9
1
of
1
3930 East Ray Road
Suite 200
Phoenix, Arizona 85044
480-759-0200
Sheet
C16
4.7uF DNP
USB mini AB SMD
PCB7238: USB3503 Evaluation Board
PORT_PWR
OCS_N
5V
1
4
ZERO DNP
R40
ZERO DNP
R25
ZERO
R33
ZERO DNP
R39
1
USB Connectors
R/ANGLE USB A CON
USB3503 25-pin WLCSP Evaluation Board
1
2
5
3
USER MANUAL
10
R/ANGLE USB A CON
SMSC USB3503 EVB
Rev
A
R/ANGLE USB A CON
5
A
B
C
D
USB3503 Evaluation Board Manual
5 USB3503 EVB Schematic
Figure 5.1 USB3503 EVB Schematic
Revision 1.0 (08-22-11)
Part ID Quantity Part Reference
1
2 C1 C5
2
2 C2 C7
3
7 C3 C6 C8 C14 C17
4
2 C4 C10
5
2 C11 C18
6
3 C9 C13 C15
7
1 C12
8
1 C16
9
1 C19
10
1 J1
11
J2 J3
12
2 J4 J5
13
1 J6
14
1 L1
15
1 LED1
16
1 LED2
17
4 MTH1 MTH2 MTH3 MTH4
18
3 P1 P2 P3
19
1 P4
20
0 P5
21
2 R1 R5 R8 R35
22
1 R2
23
2 R3 R7
R4 R10 R11 R13 R14 R15
R16 R18 R19 R20 R21 R23
24
15
R24 R26 R27 R28 R29 R30
R34
25
1 R6
R9 R12 R25 R31 R32 R33
26
4
R39 R40
27
3 R17 R22 R38
28
1 R36
29
1 R37
30
1 SW1
31
2 SW2 SW3
32
2 TP1 TP6
33
2 TP2 TP3
34
2 TP4 TP5
35
2 U1 U2
36
1 U3
37
1 U4
38
1 U5
39
1 Y1
SMSC USB3503 EVB
USER MANUAL
11
P10KJCT-ND
P14.3KLCT-ND
311-0.0JRCT-ND
P1.0KJCT-ND
P12.0KABCT-ND
311-330LRCT-ND
EG1861-ND
563-1022-1-ND
5006K-ND
5008K-ND
5015KCT-ND
296-15305-1-ND
RESISTOR 10K OHM 1/16W 5% 0402 SMD
RES 14.3K OHM 1/10W 1% 0402 SMD
RESISTOR ZERO OHM 1/16W 5% 0402 SMD
RESISTOR 1.0K OHM 1/16W 5% 0402 SMD
RESISTOR 12.0K OHM 1/20W 1% 0201 SMD
RESISTOR 330 OHM 1/16W 1% 0402 SMD
SWITCH TACTILE 6MM EXTEND ACT 160GF
SWITCH SLIDE SPDT SMD GULL
TEST POINT LOOP COMPACT BLACK
TEST POINT LOOP COMPACT ORANGE
TEST POINT
IC 200MA LDO LINEAR REG SOT23-6
USB3503_25WLCSP
POWER SWITCH USB MIC2026-1B
IC SCHMITT-TRG INV GATE SOT23-5
OSCILLATOR PROG 3.3V +-50PPM SMD
576-2137-ND
296-1092-1-ND
AP3S3EC-ND
FCI
MOLEX
TYCO ELECTRONICS
YAGEO
Panasonic - ECG
Panasonic - ECG
609-1045-ND
WM17122CT-ND
A97799CT-ND
311-0.0ERCT-ND
P51.0KLCT-ND
P30.1KLCT-ND
PANASONIC
PANASONIC
YAGEO
E-SWITCH
COPAL ELECTRONICS
KEYSTONE
KEYSTONE
KEYSTONE
TEXAS INSTRUMENTS
SMSC
MICREL
TEXAS INSTRUMENTS
ABRACON
YAGEO
Panasonic - ECG
PANASONIC
Manuf
TAIYO YUDEN
PANASONIC
PANASONIC
PANASONIC
PANASONIC
United Chemi-Con
MURATA ERIE
TDK
MURATA ERIE
SAMTEC
HIROSE
MOLEX
CUI STACK
PANASONIC
STANLEY
Kingbright
Digikey_Number
587-1441-1-ND
PCC180CQCT-ND
PCC2146CT-ND
PCC1750CT-ND
PCC2424CT-ND
565-3188-1-ND
490-5408-1-ND
445-1417-1-ND
490-1319-1-ND
SAM1030-05-ND
H9161CT-ND
WM6402-ND
CP-002AH-ND
P10750CT-ND
404-1005-1-ND
754-1131-1-ND
Description
CAPACITOR CERAMIC 4.7UF 10V X5R 0603
CAPACITOR CERAMIC 18PF 50V 0402 SMD
CAPACITOR CERAMIC 0.1UF 10V X5R 0402
CAPACITOR CERAMIC 0.01UF 16V 10% X7R 060
CAPACITOR CERAMIC 0.1UF 10V X5R 0201
CAP 120UF 6.3V ELECT POLY SMD
CAPACITOR CERAMIC 4.7UF 6.3V X5R 0402
CAPACITOR CERAMIC 4.7UF 6.3V X5R 20% 0603
CAPACITOR CERAMIC 1.0UF 6.3V 20% X5R 0402
HEADER, 2 X 5, 0.1 INCH, VERTICAL
CONN RECPT U.FL
HEADER, 1 X 2, 0.1 INCH, VERTICAL
CONNECTOR POWER JACK 2.1X5.5MM HIGH CURR
FERRITE BEAD, 120 OHM, 0.5A, 0.1DCR, 0603
LED GREEN SMT
LED GREEN 2X1.2MM 568NM GN WTR CLR SMD
MOUNTING PAD MTG250C140D
RECEPTACLE, USB, STYLE B, RIGHT ANGLE
CONNECTOR RECEPT USB MINI AB 5POS RT ANG
CONNECTOR RECEPT MICRO USB TYPE AB SMT
RESISTOR ZERO OHM 1/4W 5% 1206
RES 51.0K OHM 1/10W 1% 0402 SMD
RES 30.1K OHM 1/10W 1% 0402 SMD
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
RoHS
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
5006 Yes
5008 Yes
5015 Yes
TPS79301DBVRQ1
Yes
USB3503
Yes
MIC2026-1YM
Yes
SN74AHC1G14DBVR
Yes
AP3S-26.0MHz
Yes
ERJ-2GEJ102X
ERJ-1GEF1202C
RC0402FR-07330RL
TL1105SPF160Q
CJS-1200TB
RC0402JR-070RL
ERJ-2RKF1432X
ERJ-2GEJ103X
87520-0010BLF
56579-0576
1981584-1
RC1206JR-070RL
ERJ-2RKF5102X
ERJ-2RKF3012X
Manuf_PN
LMK107BJ475KA-T
ECJ-0EC1H180J
ECJ-0EB1A104K
ECJ-1VB1C103K
ECJ-ZEB1A104M
APXE6R3ARA121ME61G
GRM155R60J475ME87D
C1608X5R0J475M
GRM155R60J105ME19D
TSW-105-07-L-D
U.FL-R-SMT (10)
22-28-4020
PJ-002AH
EXC-3BP121H
BG1111C-TR
APT2012SGC
R9 R25 R32 R39
R40
R18 R23 R28 R29
R30
P4
P5
R35
J4 J5
C16
C17
DNP
USB3503 Evaluation Board Manual
6 USB3503 EVB Bill of Materials
Figure 6.1 USB3503 EVB Bill of Materials
Revision 1.0 (08-22-11)
USB3503 Evaluation Board Manual
7 Revision History
Table 7.1 Customer Revision History
REVISION LEVEL & DATE
Rev 1.0
(7-13-11)
SMSC USB3503 EVB
SECTION/FIGURE/ENTRY
CORRECTION
Initial Release
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USER MANUAL
Revision 1.0 (08-22-11)
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