MG815+ Module Hardware Design User Manual
3
PIN definitions
The main connector of MG815+ or ME3000 is 40-PIN connector and 10-PIN connector. The distance between
two PINS is 1.27mm. Refer to the figure below:
Figure 3-1 PIN
Refer to table 3-1/3-2 below for PIN definitions:
Table 3-1 PIN definitions of 40 PIN connector
Function Pin No.
Signal name
I/O
Basic functions
Remarks
39
MIC_1P I MIC
1
Anode
37
MIC_1N
I
MIC 1 Cathode
34
SPK_1P
O
Receiver 1 Anode
32
SPK_1N O Receiver 1 Cathode
40
MIC_2P I MIC
2
Anode
38
MIC_2N
I
MIC 2 Cathode
33
SPK_2P
O
Receiver 2 Anode
MIC 1 is the default
configuration for audio I/O
when power on, generally
MIC 1 is used for handset,
MIC 2 for earphone
35
EAR_AN_DE
T
I
Earphone button test
draw up internal
，
low level
valid
36
EAR_DET
I
Earphone inserting test
draw down internal
，
low
level valid
27
AUXOP
O
Line output, anode
Audio
29
AUXON
O
Line output, Cathode
12
/CTS
O
Clear to send
low level valid.
14
/RTS I
Request to send
low level valid
13
TXD O
Transmit data
11
RXD I
Receive data
Serial
port 1
15
RI
O
Ring indicating signal
TTL level.
1.
high level when
14
