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2.4. Pin Assignment
The following figure illustrates the pin assignment of the module.
1
PSM_IND
2
ADC1
3
GND
4
PCM_CLK
5
PCM_SYNC
6
PCM_DIN
7
PCM_DOUT
8
USB_VBUS
9
USB_DP
10
USB_DM
11
RESERVED
12
RESERVED
13
RESERVED
14
RESERVED
15
PWRKEY
16
RESERVED
17
RESET_N
18
W_DISABLE#
PSM Pins
GND Pins
ADC Pins
PCM Pins
NOTE
1.
USB_BOOT cannot be pulled up before startup.
2.
Keep NC and RESERVED pins unconnected, all GND pins shall be connected to the ground.
3.
The function of PSM is under development and it is not recommended to use it right now.
4.
The module supports dual-SIM single stand by. For details, please contact Quectel Technical
Support.
EG915U_Series_Hardware_Design
103
103
114
82
RESERVED
RESERVED
GND
104
115
102
RESERVED
RESERVED
GND
63
83
USIM2_DET
RESERVED
64
84
USIM2_CLK
SPI_DOUT
65
85
USIM2_RST
RESERVED
66
86
RESERVED
USIM2_DATA
67
87
USIM2_VDD
GND
68
88
SPI_DIN
GND
103
105
116
89
RESERVED
RESERVED
GND
106
107
69
RESERVED
RESERVED
GND
USB Pins
RESERVED Pins
Figure 2: EG915U Series Module Pin Assignment (Top View)
80
79
103
81
RESERVED
GND
GND
GND
101
100
99
118
RESERVED
RESERVED
GND
GND
RESERVED
119
126
RESERVED
MIC_N
MIC_P
120
125
MICBIAS
PSM_EINT
RESERVED
121
124
RESERVED
SPK_P
RESERVED
122
123
RESERVED
RESERVED
SPK_N
RESERVED
91
92
103
90
RESERVED
RESERVED
GND
GND
108
71
70
72
RESERVED
GND
GND
GND
SPI Pins
Signal Pins
Debug UART Pins
UART2 Pins
LTE Standard Module Series
49
RESERVED
48
GND
112
113
47
RESERVED
USIM1_GND
46
USIM1_CLK
2
111
RESERVED
45
USIM1_DATA
98
78
44
RESERVED
USIM1_RST
43
USIM1_VDD
97
77
GRFC2
42
USIM1_DET
41
96
76
I2C_SDA
GRFC1
40
I2C_SCL
95
75
USB_BOOT
39
MAIN_RI
94
74
GND
38
MAIN_DCD
37
93
73
MAIN_RTS
GND
36
MAIN_CTS
117
110
RESERVED
35
MAIN_TXD
34
109
MAIN_RXD
RESERVED
33
VBAT_BB
32
VBAT_BB
Power Pins
IIC Pins
(U)SIM Pins
UART1 Pins
Audio Pins
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