MG3732 module
15
Table 3-1 PIN definitions
1
VREG_USIM
UIM
MG3732MD_A
GND
36
2
USIM_RST
GND
35
3
USIM_CLK
LED
SIG_LED
34
4
USIM_DATA
PCM
PCM_DIN
33
5
GND
PCM_CLK
32
6
EAR2_P
AUDIO
USB
USB_DM
31
7
EAR1_P
USB_DP
30
8
EAR1_N
ON/OFF
29
9
MIC2_P
UART
PCM_SYNC(/DS
R)
28
10
MIC1_P
PCM_DOUT(DC
D)
27
11
MIC1_N
/DTR
26
12
GND
/RTS
25
13
/PON_RESET
RI
24
14
VBUS
POWER
TXD
23
15
VCHG
RXD
22
16
V_MAIN
/CTS
21
17
V_MSME_1V8
GND
20
18
V_MAIN
ANT
RF_ANT
19
Refer to table 3-1 below for PIN definitions of MG3732 module.
Table 3-2 PIN definitions
Function
Pin No.
Signal name
I/O
Basic functions
Remarks
SIM card
interface
1 VREG_USIM
O 2.85V/1.8V
2
USIM_RST
O
USIM card reset signal
3
USIM_CLK
O
USIM card clock
4
USIM_DATA
I/O
USIM card data cable
Audio
6
EAR2_P
O
Single-end audio output
channel 2
7
EAR1_P
O
Differential audio output
channel 1, anode
8
EAR1_N
O
Differential audio output
channel 1, cathode
9
MIC2_P
I
Single-end audio input
channel 2
10
MIC1_P
I
Differential audio input
channel 1, anode
11
MIC1_N
I
Differential audio input
channel 1, cathode