LTE Standard Module Series
EC25 Hardware Design
EC25_Hardware_Design 23 / 130
3.2. Pin Assignment
The following figure shows the pin assignment of EC25 module.
34
3
35
36
20
21
22
23
24
25
26
27
28
29
30
31
32
33
1
4
5
6
7
2
WAKEUP_IN
1)
AP_READY
RESERVED
W_DISABLE#
NET_MODE
1)
NET_STATUS
VDD_EXT
GND
GND
DBG_RXD
DBG_TXD
USIM_PRESENCE
USIM_VDD
USIM_DATA
USIM_CLK
USIM_RST
RESERVED
8
9
10
11
12
13
14
15
16
17
18
19
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
USIM_GND
GN
D
RE
S
E
T
_N
P
W
R
KEY
2)
GN
D
S
D
_I
N
S
_D
E
T
SD
C
2_
D
AT
A
3
SD
C
2_
D
AT
A
2
SD
C
2_
D
AT
A
1
SD
C
2_
D
AT
A
0
S
D
C
2_C
L
K
S
D
C
2_C
M
D
AN
T
_D
IV
GN
D
GN
D
US
B
_V
B
U
S
US
B
_D
M
US
B
_D
P
RX
D
TX
D
DT
R
RT
S
CT
S
DC
D
RI
ST
AT
U
S
VB
AT
_B
B
VB
AT
_B
B
VB
AT
_R
F
VB
AT
_R
F
GN
D
RE
S
E
RV
E
D
GND
GND
ANT_MAIN
GND
ANT_GNSS
GND
ADC1
RESERVED
I2C_SDA
I2C_SCL
ADC0
GND
GND
GND
73
74
75
76
77
78
79
80
81
82
83
84
100
101
102
106
107
111
112
103
104
109
105
110
89
94
98
88
93
97
86
91
96
85
90
95
99
87
92
108
11
3
RE
S
E
RV
E
D
RE
S
E
RV
E
D
117
126
125
124
123
122
121
118
127
128
11
5
US
B
_B
O
O
T
1)
RE
S
E
RV
E
D
11
6
140
137
1)
136
1)
135
134
133
132
131
130
129
11
4
VD
D
_S
D
IO
Power Pins
Signal Pins
GND Pins
RESERVED
RESERVED
141
142
RESERVED
RESERVED
143
144
119
120
WLAN Pins
RESERVED Pins
Bluetooth Pins
PC
M
_IN
3)
PC
M
_O
U
T
3)
PC
M
_SY
N
C
3)
PC
M
_C
L
K
3)
BT_CTS
1)
BT_RXD
BT_TXD
BT_RTS
139
138
1)
SGMII Pins
Figure 2: Pin Assignment (Top View)
1.
1)
means pins WAKEUP_IN, NET_MODE, WLAN_EN, COEX_UART_RX, COEX_UART_TX,
USB_BOOT and BT_CTS cannot be pulled up before startup.
2.
2)
PWRKEY output voltage is 0.8V because of the diode drop in the Qualcomm chipset.
3.
3)
means digital audio (PCM) is only supported on
Telematics
version.
4. Pins 37~40, 118, 127 and 129~139 are used for wireless connectivity interfaces, among which pins
118, 127 and 129~138 are WLAN function pins, and the rest are Bluetooth (BT) function pins. BT
function is under development.
NOTES
