User's Manual

- 18 -
4. Pin Definition
Pin No
Definition
Basic Description
Type
Level
1
GND
System Ground Pin
2
3.3V
3.3V VBAT system power supply input
I
3.3V
3
USB_DP
USB Serial Differential Data Positive
I/O
3.3V
4
3.3V
3.3V VBAT system power supply input
I
3.3V
5
USB_DN
USB Serial Differential Data Negative
I/O
3.3V
6
WLAN_LED
GPIO[2] (output) for WLAN LED
O
3.3V
7
GND
System Ground Pin
8
GPIO[6]/PCM_CLK
GPIO[6] (input/output)
I/O
VIO
9
NC
NC
10
GPIO[7]/PCM_SYNC
GPIO[7] (input/output)
I/O
VIO
11
NC
NC
12
GPIO[4]/PCM_IN
GPIO[4] (input/output)
O
VIO
13
NC
NC
14
GPIO[5]/PCM_OUT
GPIO[5] (input/output)
I
VIO
15
NC
NC
16
BT_LED
GPIO[3] (output) for BT LED
O
3.3V
17
NC
NC
18
GND
System Ground Pin
19
NC
NC
20
GPIO[13]/UART WAKE_N
GPIO[13] for UART WAKE_N (output)
O
VIO
21
NC
NC
22
GPIO[8]/UART RXD
UART_SOUT (output)
O
VIO
23
PDn
Full Power Down (input) (active low)
I
1.8V
24
Connector Key
25
Connector Key
26
Connector Key
27
Connector Key
28
Connector Key
29
Connector Key
30
Connector Key
31
Connector Key
32
GPIO[9]/UART TXD
UART_SIN (input)
I
VIO
33
GND
System Ground Pin
34
GPIO[11]/UART_CTS
UART_RTSn (output)
O
VIO
*35
PCIE_RX_P/USB3_RX_P*
PCI Express Receive Data—Positive / USB 3.0 RX_P*
I
VIO