WMOi3 Integrated modem preliminary specification

WMOi3 Integrated modem preliminary specification
WMOi3 Integrated modem
25/01/00
WMOi3 Integrated modem preliminary
specification
This document is the property of WAVECOM, and is transferred to
______________________________ under the conditions of the active Non-Disclosure
Agreement dated __________. Use of this document is subject to the terms of this
NDA. This document will be returned to WAVECOM under request.
Version : 1.1
Date : 25/01/00
1
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authorization
WMOi3 Integrated modem
25/01/00
DOCUMENT
ISSUE
DATE
STATUS
AUTHOR
1.0
28/10/99
P
SDE
1.1
25/01/00
P
FDO/DMA
AMENDMENTS
COMMENTS
Creation
Modifications
2
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authorization
WMOi3 Integrated modem
25/01/00
Contents
1.
1.1.
2.
2.1.
2.2.
2.3.
3.
3.1.
3.2.
3.2.1.
3.2.2.
3.2.3.
3.2.4.
3.3.
3.4.
4.
4.1.
Introduction.........................................................................................................4
Scope .................................................................................................................4
Generality ...........................................................................................................5
Phylosophy .........................................................................................................5
Physical caracteristics ......................................................................................5
Integrated modem design.................................................................................6
Interfaces description........................................................................................7
The main connector...........................................................................................7
Pin Description..................................................................................................10
Power supply......................................................................................................10
Serial Link RS232 .............................................................................................10
Remote SIM interface .......................................................................................11
AUDIO.................................................................................................................12
SIM Interface ......................................................................................................13
RF interface........................................................................................................13
Appendix ............................................................................................................14
Mechanical Drawings........................................................................................14
3
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WMOi3 Integrated modem
1.
25/01/00
Introduction
1.1. Scope
This preliminary document describes the interfaces and the technical
specifications for the integrated modem called WMOi3.
4
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WMOi3 Integrated modem
2.
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Generality
2.1. Phylosophy
The integrated modem is a product with a sole connector which puts
together all the interface signals in order to facilitate its integration.
It has an integrated SIM connector as well as a standard RF
connector type MMCX (Miniature Micro Connector).
2.2. Physical caracteristics
The WMOI3 integrated modem has a complete self-contained shield.
The physical characteristics are the following ones:
Physical characteristic
Dimension
Absolute maximum dimension
Weight
Volume
Case
Qualification
46 x64 x 12.4 mm
About 80 g
36.21 cm3
Zamack +
stainless steel
5
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2.3. Integrated modem design
* For technical drawing see Annexe A
6
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WMOi3 Integrated modem
3.
25/01/00
Interfaces description
3.1. The main connector
This is a 50 pins interface connector with a pitch of 1.27 from
SAMTEC, referenced FTS-125-01-L-DV. (see figure1)
Figure 1 : 50 pins connector Bottom view
GND
+5V
GND
SPK2N
SPK2P
SPK1P
SPK1N
MIC2P
MIC2N
MIC1P
MIC1N
GND
GPIO0
CT104/RX
CT105/RTS
COL4
COL2
COL0
ROW3
ROW1
SPI_EN
SPI_CLK
SIMRST
SIMPRES1
GND
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
GND
+5V
CT109/DCD
GPIO2
CT125/RI
GPIO1
CT106/CTS
ON/~OFF
AUXV0
~RST
INTR
BOOT
CT103/TX
CT107/DSR
CT108-2/DTR
COL3
COL1
ROW4
ROW2
ROW0
GND
SPI_IO
SIMCLK
SIMVCC
SIMDATA
7
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The following table describes the electrical characteristics of the
interface.
Some signals require particular connections and are specified in bold
characters.
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
Name
GND
GND
+5V
+5V
CT109/DCD
GND
GPIO2
SPK2N
CT125/RI
SPK2P
GPIO1
SPK1P
CT106/CTS
I/O
I/O type
I
I
O
Supply
Supply
CMOS/2X
I/O
O
O
O
I/O
O
O
CMOS/2X
Analog
CMOS/2X
Analog
CMOS/2X
Analog
1X
14
15
16
17
18
19
20
21
22
23
24
25
SPK1N
ON/~OFF
MIC2P
AUXV0
MIC2N
~RST
MIC1P
GND
MIC1N
BOOT
GND
CT103/TX
O
I
I
I
I
I
I
I
I
I
Analog
26
27
GPIO0
CT107/DSR
I/O
O
CMOS/2X
1X
28
29
CT104/RX
CT108-2/DTR
O
I
1X
30
CT105/RTS
I
Analog
Analog
Analog
Analog
Analog
I
Description
GROUND
GROUND
RS232-Data Carrier Detect
GROUND
General Purpose I/O
Speaker2 negative output
RS232-Ring Indicator
Speaker 2 positive output
General Purpose I/O
Speaker 1 positive output
RS232 interface Clear To
Send
Speaker 1 negative output
Power ON/OFF control
Microphone 2 positive input
Auxiliary ADC input
Microphone 2 negative input
Reset active low
Microphone 1 positive input
Ground
Microphone 1 negative input
BOOT
GROUND
RS232 interface - Transmit
General Purpose I/O
RS232 interface
Data Set Ready
RS232 interface – Receive
RS232 interface
Data Terminal Ready
RS232 interface
Request To Send
Comment
High current
High current
High current
High current
High current
Open Collector
Open Collector
High current
Pull up to VCC
with 100KΩ when
not used
See 3.2.3
Pull up to VCC
with 100KΩ when
not used
Pull up to VCC
with 100KΩ when
not used
8
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WMOi3 Integrated modem
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
COL3
COL4
COL1
COL2
ROW4
COL0
ROW2
ROW3
ROW0
ROW1
GND
SPI_EN
SPI_IO
SPI_CLK
SIMCLK
SIMRST
SIMVCC
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
48
SIMPRES1
I
49
50
SIMDATA
GND
I/O
O
I/O
O
O
O
O
25/01/00
1X
1X
1X
1X
1X
1X
1X
1X
1X
1X
Keyboard column
Keyboard column
Keyboard column
Keyboard column
Keyboard row
Keyboard column
Keyboard row
Keyboard row
Keyboard row
Keyboard row
GROUND
SPI enable
I2C Data or SPI Data
I2C Clock or SPI Clock
Clock for SIM Interface
Reset for SIM interface
SIM card supply
1X
1X
1X
2X
2X
SIM card detect
3X
I/O for SIM interface
GROUND
High current
3V mode
3V mode
3V mode
6mA max
Connected to SIM
connector pin 8.
Pin 4 of SIM
connector must
be pulled down
to GND with 1 KΩ
3V mode
High current
All digital I/O are CMOS 3V compatible.
Operating conditions
Parameter
VIL
VIH
VOL
VOH
I/O type
CMOS
CMOS
1X
2X
3X
1X
2X
3X
Min
-0.5V
2.1V
2.6V
2.6V
2.6V
Max
0.8V
3.0V
0.2V
0.2V
0.2V
Condition
IOL
IOL
IOL
IOH
IOH
IOH
= -1 mA
= -2 mA
= -3 mA
= 1 mA
= 2 mA
= 3 mA
9
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WMOi3 Integrated modem
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3.2. Pin Description
3.2.1. Power supply
The main power supply will be provided through a double connection.
These connections are respectively the pin 3 and 4 for the +5V and
the pins 1 and 2 for the ground (GND).
The power supply is 5V +/-5% 1A.
3.2.2. Serial Link RS232
This interface is needed for communication with a remote terminalwith
respect to the RS232 V.28 standard levels. As the integrated modem
does not include a transceiver MAX3238 or MAX3237, this one has to be
added outside with a SUBD9 (connected to the integrated modem
through a short 10 or 12 wires cable for example). These transceiver and
SUBD9 can then be connected to the PC with a standard RS232 cable.
The table below lists the needed signals for this interface :
PIN number
5
28
25
29
27
30
13
9
2
4
19
23
Signal
DCD
RX
TX
DTR
DSR
RTS
CTS
RING
GND
+5V
RST
BOOT
Description
Data Carrier Detect
Reception
Transmission
Data Terminal Ready
Data Set Ready
Request To Send
Clear To Send
Ring indicator
Ground
Interface Power Supply
General Reset (optionnal)
Boot signal for downloading (optionnal)
When the RS232 V.28 level is not needed, the above signals can be
used as TTL 3V CMOS compatible signals.
10
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Application example needing V.28 levels :
Integrated
modem
10 or 12 wires
10 cms max
RS 232
INTERFACE standard RS232
MAX3238
PC
+
SUBD9
50 PIN
CONNECTOR
3.2.3. Remote SIM interface
A SIM connector is already integrated on the integrated modem (see
3.3 SIM interface). However there is the possibility to implement a remote
SIM connector using the signals described in the table below.
PIN number
47
46
45
50
49
48
26
Signal
SIMVCC
SIMRST
SIMCLK
GND
SIMDATA
SIMPRES
GPIO0
The GPIO0 pin is used to drive a bi-directional level shifter (LTC 55 or
similar) to allow the use of 3V and 5V SIMs as well.
11
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3.2.4. AUDIO
The modem allows the connection of a handset or a headset through
AUDIO signals
The audio end stage must respects the following specifications :
Microphone
The microphone inputs are differential inputs. They already
contain the necessary biasing for an electret microphone
(0,5 mA and 2 Volts). Connection is direct. The impedance
of the microphone has to be around 2kΩ . The microphone
inputs gain can be adjusted by AT command. Gain can be
tuned from 30dB to 51dB. Connection can be differential or
single-ended but it is recommended to use differential
connection to reject common mode noise and TDMA noise.
Speaker
Speaker outputs are push-pull amplifiers and can drive loads
down to 50 Ohms and up to 1nF. These outputs are
differential and the output power can be adjusted by step of
2dB with AT command. The output can be connected
directly to a speaker. Connection can be differential or
single-ended but it is recommended to use differential
connection to reject common mode noise and TDMA noise.
The audio signal are :
Audio
Audio
Signal
MIC1P
1
MIC1N
SPK1P
SPK1N
MIC2P
2
MIC2N
SPK2P
SPK2N
Pin number
20
22
12
14
16
18
10
8
Description
Microphone 1 positive input
Microphone 1 negative input
Speaker 1 positive output
Speaker 1 negative output
Microphone 2 positive input
Microphone 2 negative input
Speaker 2 positive output
Speaker 2 negative output
12
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WMOi3 Integrated modem
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3.3. SIM Interface
The provided SIM connector has been designed for 3V technology
SIMs only
3.4. RF interface
The RF connector is MMCX (Miniature Micro Connector) standard
type for a surface mounting.
An antenna can be directly connected through the matting connector
or using a small MMCX / SMA adaptor.
The antenna must comply with the following specifications :
Frequency RX
Frequency TX
Impedance
EGSM
925 to 960 MHz
880 to 915 MHz
DCS
1805 to 1880 MHz
1710 to 1785 MHz
50 Ω
13
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WMOi3 Integrated modem
4.
25/01/00
Appendix
4.1. Mechanical Drawings
14
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