Product Info

LTE Standard Module Series
EG91 Hardware Design
EG91_Hardware_Design 18 / 93
3.2. Pin Assignment
The following figure shows the pin assignment of EG91 module.
NC
PCM_SYNC
PCM_CLK
PCM_DIN
PCM_DOUT
NC
NC
PWRKEY
1)
NC
RESET_N
RESERVED
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
USB_DM
AP_READY
ST ATUS
NETLIGHT
DBG_RXD
DBG_TXD
ADC0
RESERVED
SPI_CLK
SPI_MOSI
SPI_MIS O
VDD_EXT
DTR
GND
USIM1_CLK
USIM1_DATA
USIM1_RST
USIM1_VDD
RI
DCD
CTS
TXD
RXD
VBAT_BB
VBAT_BB
USIM_GND
GND
31 30 29 28 27 26
23 22 21 20 19
10
9
USB_DP
USB_VB US
NC
GND
NC
NC
RTS
I2C_SCL
I2C_SDA
8
49
48
47
46
45
44
43
40
41
42
39
38
37
36
35
34
33
32
24
57
56
GND
GND
ANT_MAIN
GND
GND
NC
VBAT_RF
VBAT_RF
GND
GND
NC
GND
USIM1_PRESENCE
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
PO WER USB UART
(U)SIM
OTHE RS
GND
NC
PCM
ANT
25
USIM2_PRESENCE
USIM2_CLK
USIM2_RST
USIM2_DATA
USIM2_VDD
SPI
USB_BO OT
103
104
105
106
ANT_DIV (EG91-NA/-NS/-VX/-EX)
ANT_GNSS (EG91-NA/-NS/-VX/-EX)
RESERVED
RESERVED (Pi n 4 9 on E G91-E)
ANT_DIV (EG91-E)
Figure 2: Pin Assignment (Top View)