Wi-Fi&Bluetooth Module Series
FC909A_Hardware_Design 19 / 49
3
JTAG mode can be configured through GPIO1/GPIO2. If you need, please contact Quectel Technical Supports.
HOST_WAKE_BT 6
DI
Host wakes up Bluetooth
VDDIO power domain.
If unused, keep them open.
BT_WAKE_HOST 7
DO
Bluetooth wakes up host
PCM_DOUT
25
DO
PCM data output
PCM_CLK
26
DI
PCM clock
PCM_DIN
27
DI
PCM data input
PCM_SYNC
28
DI
PCM data frame sync
BT_RTS
41
DO
Bluetooth UART request
to send
BT_TXD
42
DO
Bluetooth UART transmit
BT_RXD
43
DI
Bluetooth UART receive
BT_CTS
44
DI
Bluetooth UART clear to
send
RF Antenna Interfaces
Pin Name
Pin No.
I/O
Description
Comment
ANT_WIFI0/BT
2
AIO
Wi-Fi0/Bluetooth
antenna interface
50 Ω impedance.
Other Interfaces
Pin Name
Pin No.
I/O
Description
Comment
WLAN_SLP_CLK
24
DI
External 32.768 kHz low
power clock input
XTAL_IN
10
DI
Crystal input
Optional.
XTAL_OUT
11
DO
Crystal output
GPIO1
3
40
DIO
General-purpose
input/output
If unused, keep them open.
GPIO2
39
DIO
General-purpose
input/output
RESERVED
Pin Name
Pin No.
Comment
RESERVED
4, 5, 8, 29, 30, 32, 35, 37, 38
Keep them open.
