Product Description

12
NC
I/O
No connect
13
NC
－
No connect
14
NC
－
No connect
15
WL_REG_ON
I
Enable pin for WLAN device
ON: pull high ; OFF: pull low
External pull low to shut down WL
VDDIO
16
WL_WAKE_HOST
O
WLAN to wake-up HOST
VDDIO
17
SDIO_CMD
I/O
SDIO command line
1.8V or 3.3V
18
SDIO_ CLK
I/O
SDIO clock line
1.8V or 3.3V
19
SDIO_DATA_3
I/O
SDIO data line 3
1.8V or 3.3V
20
SDIO_DATA_2
I/O
SDIO data line 2
1.8V or 3.3V
21
SDIO_DATA_0
I/O
SDIO data line 0
1.8V or 3.3V
22
SDIO_DATA_1
I/O
SDIO data line 1
1.8V or 3.3V
23
GND
－
Ground connections
24
OOB/
WL_WAKE_HOST
O
SDIO interrupt
VDDIO
25
NC
－
No connect
26
NC
－
No connect
27
PCM_SYNC
I/O
PCM sync signal
VDDIO
28
PCM_IN
I
PCM data input
VDDIO
29
PCM_OUT
O
PCM Data output
VDDIO
30
PCM_CLK
I/O
PCM clock
VDDIO
31
LPO
I
External Low Power Clock input
(32.768KHz) If not used keep NC
32
GND
－
Ground connections
33
NC
－
No connect
34
VDDIO
P
I/O Voltage supply input
1.8V or
3.3V
35
NC
－
No connect
36
VCC33
P
Main power voltage source input
3.3V
37
NC
－
No connect
38
BT_REG_ON
I
Enable pin for Bluetooth device
ON: pull high ; OFF: pull low
External pull low to shut down BT
VDDIO
39
GND
－
Ground connections
40
UART_TXD
O
Bluetooth UART interface
1.8V or