Quectel EG915U-EU, Manual

Page: 17 / 82

LTE Standard Module Series
EG915U-EU_Hardware_Design 16 / 81
The following figure illustrates the pin assignment of the module.
1
2
3
4
5
6
7
11
12
13
14
15
16
17
18
50
51 52 53
54 55 58
59 60 61
62
31 30 29 28 27 26 23 22 21 20 19
10
9
8
49
48
47
46
45
44
43
40
41
42
39
38
37
36
35
34
33
32
24 25
57
56
63
64
65
66
67
68
83
84
85
86
87
88
98
97
96
95
94
93
78
77
76
75
74
73
91 92 89 90
71 72 69 70
80 79
82 81
100
99
102 101
PS M_IND
ADC1
RESE RV ED
S
P
I_
CS
S
P
I_
C
LK
A
N
T
_
M
A
IN
AP
_
R
E
A
D
Y
S
T
A
T
U
S
N
E
T
_
S
T
A
T
U
S
PCM_CLK
PCM_SY NC
PCM_DIN
PCM_DOUT
W_DISA BLE#
GND
USB_VB US
USB_DP
USB_DM
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
PWRKEY
D
B
G
_
R
X
D
D
B
G
_
T
X
D
A
D
C
0
V
D
D
_
E
X
T
M
A
IN
_
D
T
R
G
N
D
MA IN_RI
MA IN_DCD
MA IN_RTS
MA IN_TXD
MA IN_RXD
VB AT_BB
MA IN_CTS
I2C_SCL
I2C_SDA
VB AT_BB
G
N
D
G
N
D
G
N
D
R
E
S
E
R
V
E
D
V
B
A
T
_
RF
V
B
A
T
_
RF
G
N
D
G
N
D
AN
T
_
BT
/WIFI
_
SC
AN
G
N
D
G
N
D
A
U
X
_
T
X
D
A
U
X
_
R
X
D
RESE T_N
USB_BOOT
USIM2_DET
USIM2_CLK
USIM2_RST
US IM2_DA TA
USIM2_VDD
SP I_DIN
SP I_DOUT
RESE RV ED
RESE RV ED
PS M_EI NT
I2S_CLK
RESE RV ED
GRFC1
GRFC2
103
104
103
115
114
103
118
113
2
112
111
103
106
105
107
116
103
108
117
109
110
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
RESE RV ED
119 126
120
121
122 123
124
125
MI C_N MI C_P
SP K_P
SP K_N
RESE RV ED
RESE RV ED
RESE RV ED
MI CB IAS
Power Pins
GND Pins
Signal Pins
RESERVED Pins
(U)SIM Pins
USB Pins
ADC Pins UART2 Pins UART1 Pins
Debug UART Pins
SPI Pins
Audio Pins
PCM Pins
USIM1_CLK
USIM1_DATA
USIM1_RST
USIM1_VDD
USIM1_GND
USIM1_DET
RESE RV ED
GND
PSM Pins
IIC Pins
R
E
S
E
R
V
E
D
Figure 2: EG915U-EU Pin Assignment (Top View)
1. USB_BOOT cannot be pulled up before the module startup.
2. Keep NC and RESERVED pins unconnected, all GND pins shall be connected to the ground.
3. The functions of pin 1 and pin 63 are under development and we do not recommend using them.
4. USIM2 is under development, not recommended for the time being. For details, please contact the
technical support of remote communication.
NOTE