Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
Pin Description
GND_1
1
Ground
Ground
Ground
Bottom
10
Module ground
SR_VLX
2
Power Out
Power
Power
Top
1
External regulator switching node
VBAT
3
Power In
Power
Power
Top
1
Main battery power input
WL_REG_EN
4
Input
Power
Power
Top
1
WLAN enable; internal pull-down
LPO_IN
5
Input
Power
Power
Top
1
32.768 kHz sleep-clock input
BT_PCM_IN
6
Input
Bluetooth
Bluetooth
Left
3
Bluetooth PCM data input
BT_PCM_CLK
7
Bi-Directional
Bluetooth
Bluetooth
Left
3
Bluetooth PCM clock
BT_PCM_SYNC
8
Bi-Directional
Bluetooth
Bluetooth
Left
3
Bluetooth PCM frame sync
BT_PCM_OUT
9
Output
Bluetooth
Bluetooth
Left
3
Bluetooth PCM data output
BT_UART_TXD
10
Output
Bluetooth
Bluetooth
Left
3
Bluetooth HCI UART transmit
BT_UART_CTS_N
11
Input
Bluetooth
Bluetooth
Left
3
Bluetooth UART clear-to-send input
BT_UART_RXD
12
Input
Bluetooth
Bluetooth
Left
3
Bluetooth HCI UART receive
BT_UART_RTS_N
13
Output
Bluetooth
Bluetooth
Left
3
Bluetooth UART request-to-send output
GND_2
14
Ground
Ground
Ground
Bottom
10
Module ground
NC_1
15
Not Connected
Reserved / NC
Reserved / NC
Right
9
No connect; leave open
GND_3
16
Ground
Ground
Ground
Bottom
10
Module ground
BT_HOST_WAKE
17
Output
Bluetooth
Bluetooth
Left
3
Bluetooth wake to host
BT_GPIO_2
18
Bi-Directional
GPIO / Control
GPIO / Control
Right
5
Bluetooth general-purpose I/O
BT_GPIO_3
19
Bi-Directional
GPIO / Control
GPIO / Control
Right
5
Bluetooth general-purpose I/O
BT_GPIO_5
20
Bi-Directional
GPIO / Control
GPIO / Control
Right
5
Bluetooth general-purpose I/O
GND_4
21
Ground
Ground
Ground
Bottom
10
Module ground
WL_ANT
22
Signal
RF
RF
Right
6
WLAN/Bluetooth 50-ohm antenna port
GND_5
23
Ground
Ground
Ground
Bottom
10
Module ground
GND_6
24
Ground
Ground
Ground
Bottom
10
Module ground
RF_SW_CTRL_5
25
Output
RF
RF
Right
6
Programmable RF switch control
RF_SW_CTRL_0
26
Output
RF
RF
Right
6
Programmable RF switch control