HAT UserManual

10
Raspberry PI HAT Rev 1.0 Copyright © 5GHUB.US
card
15
GND
16
RESERVED
17
RI
O
Ring indication
18
GND
19
RESERVED
20
W_DISABLE#
I
Airplane mode control
21
GND
22
PERST#
I
Fundamental reset
signal
23
UART_CTS
I
UART clear to send
24
RESERVED
25
UART_RTS
O
UART request to send
26
GND
27
GND
28
NC
29
GND
30
I2C_SCL
OD
I2C serial clock
31
DTR
DI
Sleep mode control
32
I2C_SDA
OD
OD I2C serial data
33
RESERVED
34
GND
35
GND
36
USB_DM
IO
USB differential data (-)
37
GND
38
USB_DP
IO
USB differential data (+)
39
VCC_3V3
I
3.0V~3.6V, typically
3.3V DC supply
40
GND
41
VCC_3V3
I
3.0V~3.6V, typically
3.3V DC supply
42
LED_WWAN#
OC
LED signal for indicating
the network status of
the module
43
GND
44
NC
(U)SIM card insertion
detection
45
PCM_CLK
IO
PCM clock signal
46
RESERVED
47
PCM_DOUT
O
PCM data output
48
NC
49
PCM_DIN
I
PCM data input
50
GND
51
PCM_SYNC
IO
PCM frame
synchronization
52
VCC_3V3
PI
3.0V~3.6V, typically
3.3V DC supply