Product Info
LTE Standard Module Series
EC25 Series Hardware Design
EC25_Series_Hardware_Design 26 / 134
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
GND
RESET_N
PWRKEY
2)
GND
SD_INS_DET
SDC2_DATA3
SDC2_DATA2
SDC2_DATA1
SDC2_DATA0
SDC2_CLK
SDC2_CMD
ANT_DIV
GND
GND
USB_VBUS
USB_DM
USB_DP
RXD
TXD
DTR
RTS
CTS
DCD
RI
STATUS
VBAT_BB
VBAT_BB
VBAT_RF
VBAT_RF
GND
RESERVED
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
113
RESERVED
RESERVED
117
126
125
124
123
122
121
118
127
128
115
USB_BOOT
1)
RESERVED
116
140
137
1)
136
1)
135
134
133
132
131
130
129
114
VDD_SDIO
Power Pins Signal Pins
GND Pins
RESERVED
RESERVED
14 1
14 2
RESERVED
RESERVED
14 3
14 4
119
120
WLAN Pins RESERVED Pins
Bluetooth Pins
PCM_IN
3)
PCM_OUT
3)
PCM_SYNC
3)
PCM_CLK
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 0.8 V 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.
5. Pins 119–126 and 128 are used for SGMII interface.
6. Pins 24–27 for PCM function are used for audio design on EC25 series module and BT function on
FC20 module.
7. Keep all RESERVED pins and unused pins unconnected.
8. GND pins 85–112 should be connected to ground in the design. RESERVED pins 73–84 should not
NOTES