7
5
、
6
、
7
、
8 NC
/
Floating(Don’t connected to ground
9
BT_WAKE_HOST
O
Bluetooth device to wake up HOST
10
HOST_WAKE_BT
I
HOST to wake up Bluetooth device
11
VIN
P
VDD 3.3V Power Supply
12
USB_DM
I/O
USB Transmitter/Receiver Differential Pair
13
USB_DP
I/O
USB Transmitter/Receiver Differential Pair
14
GND
P
ground
15
3DD_SYNC
I/O
PCM_OUT/GPIO1
16
WL_DIS
I
WIFI DISABLE
（
Low potential
）
17
BT_DIS
I
BT DISABLE
（
Low potential
）
18
CHIP_EN
I
High asserting for use/ Low asserting reset
19
HST_WAKE_WL
I
HOST to wake up WIFI
20
WL_WAKE_HST
O
WIFI to wake up HOST
21
WPS
I/O
WPS Switch (GPIO)
22
LED
I/O
External LED Control(GPIO)
5. Application Information
5.1 Typical Application Circuit
LED Circuit
WPS Circuit
