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41
VDDIO
42
GND
43
URXD2
44
UTXD2
45
USB_DM
46
USB_DP
47
LSDA0
48
LSCE0B0
49
LSRSTB
50
LSCK0
51
LSDI0
52
LSA0DA0
53
SDA28/SPICS
SCL28/SPISC
54
K
PWM/EARDE
55
T
56
PCMRST
57
PCMOUT
58
PCMCLK
59
PCMSYNC
60
PCMIN
2.2
Antenna Interf ace
Regarding the antenna of MG2639_V3 module, proper measures should be taken to reduce the
access loss of effective bands, and good shielding should be established between external antenna
This document is not allowed to
transmit without ZTE Corporation's
permission
GPIO19
LDO output
Output
Ground
Input,
UART2
GPIO22
Output,
UART2
GPIO23
USB
I/O
USB
I/O
Output，
Serial LCD
GPIO38
Output，
Serial LCD
GPIO40
Output，
Serial LCD
GPIO46
Output，
Serial LCD
GPIO37
Input，
Serial LCD
GPIO39
Output，
Serial LCD
GPIO36
I2C/SPI
I/O，GPIO2
Output，
I2C/SPI
GPIO1
Output，
PWM output
GPIO0
Output，
PCM reset
GPIO56
Output，
PCM
GPIO54
Output，
PCM
GPIO50
Output，
PCM
GPIO55
Input，
PCM
GPIO53
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2.8V
Ground
Receiving data
2.8V IO
from serial port
Transmitting data
2.8V IO
from serial port
USB data -
USB data +
Serial LCD data
1.8V IO
cable data0
Serial LCD
1.8V IO
enabled
Serial LCD reset
1.8V IO
Serial LCD clock
1.8V IO
cable
Serial LCD data
1.8V IO
cable input
Serial LCD data
1.8V IO
cable1
I2C data cable,
also used for SPI
2.8V IO
chip select
I2C clock cable,
also used for SPI
2.8V IO
clock;
PWM output,
PWM can be used
as earpiece insert
2.8V IO
detection when
not used
Reset external
2.8V IO
PCM settings
PCM data output
2.8V IO
PCM clock
2.8V IO
PCM bytes SYNC
2.8V IO
PCM data input
2.8V IO
User Manual
8
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