Telit EVK2 User Guide
1vv0300704 Rev.13- 2012/06/25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page
42 of 149
12.
Connectors pinout
12.1.
Motherboard to Module
The connections between CS1139B and every Telit module Interface Board are made
through two
40 pin male
connectors. Theirs pin functions are listed in the following tables.
Pin
Signal
Type
Function
1
NC
1
2
TX_Trace
Digital Output
to RS232 or USB level translators
3
RX_Trace
Digital Input
from RS232 or USB level
translators
4
IIC_SDA_HW
Digital In/Out
from/to USB level translators
5
GND
DC voltage
Power
6
IIC_SCL_HW
Digital Input
from USB level translators
7
SSC0_CLK
Digital Output
to USB level translators
8
SSC0_MTSR
Digital In/Out
from/to USB level translators
9
SSC0_MRST
Digital In/Out
from/to USB level translators
10
NC
11
GND
DC voltage
Power
12
GND
DC voltage
Power
13
GND
DC voltage
Power
14
GND
DC voltage
Power
15
C109/DCD
Digital Output
to RS232 or USB level translator
16
C104/RXD
Digital Output
to RS232 or USB level translator
17
C103/TXD
Digital Input
from RS232 or USB level translator
18
C108/DTR
Digital Input
from RS232 or USB level translator
19
GND
DC voltage
Power
20
C107/DSR
Digital Output
to RS232 or USB level translator
21
C105/RTS
Digital Input
from RS232 or USB level translator
22
C106/CTS
Digital Output
to RS232 or USB level translator
23
C125/RING
Digital Output
to RS232 or USB level translator
24
NC
25
GND
DC voltage
Power
26
GND
DC voltage
Power
27
GND
DC voltage
Power
28
GND
DC voltage
Power
29
AC Out Voltage
Audio
30
EAR_MT-
AC Out Voltage
Audio
31
EAR_HF-
AC Out Voltage
Audio
1
DO NOT CONNECT
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