User's Manual

GSM/GPRS Module Series
M35 User Manual
M35_User_Manual Confidential / Released 18 / 85
3.1. Pin of Module
3.1.1. Pin Assignment
VBAT
RF
Other
GND
UART
Audio
Power
SIM
SIM_GND
31
SIM1_CLK
30
SIM1_DATA
29
SIM1_RST
28
SIM1_VDD
27
PCM_OUT
41
PCM_IN
42
SIM2_VDD
18
SIM2_CLK
17
SIM2_DATA
16
19
VDD_EXT
PWRKEY
10
EMERG_OFF
11
STATUS/ PCM_SYNC
12
NETLIGHT
13
Top view
37
GND
39
RF_ANT
34
VBAT
1
AGND
32
VRTC
38
GND
40
GND
36
GND
35
GND
33
VBAT
25
DCD/SIM2_RST
24
RTS
23
CTS
22
TXD
21
RXD
26
RI/PCM_CLK
2
MIC2P
3
MIC2N
4
MIC1P
5
MIC1N
6
SPK1N
7
SPK1P
8
LOUDSPKN
9
LOUDSPKP
14
DBG_RXD
15
DBG_TXD
20
DTR/SIM1_PRESENCE
PCM
Figure 2: Pin Assignment