Service Guide

Wi-Fi&Bluetooth Module Series
FC800L_Hardware_Design 21 / 50
SDIO_DATA3
19
DIO
SDIO data bit 3
SDIO_DATA2
20
DIO
SDIO data bit 2
SDIO_DATA0
21
DIO
SDIO data bit 0
SDIO_DATA1
22
DIO
SDIO data bit 1
Bluetooth Application Interface
Pin Name
Pin No.
I/O
Description
Comment
PCM_SYNC*
27
DI
PCM data frame sync
VDDIO power domain
PCM_DIN*
28
DI
PCM data input
PCM_DOUT*
29
DO
PCM data output
PCM_CLK*
30
DI
PCM clock
BT_EN
38
DI
Bluetooth enable control
Active high.
VDDIO power domain
BT_TXD
40
DO
Bluetooth UART transmit
VDDIO power domain
BT_RXD
41
DI
Bluetooth UART receive
BT_RTS
42
DO
Bluetooth UART request
to send
BT_CTS
43
DI
Bluetooth UART clear to
send
HOST_WAKE_BT*
49
DI
Host wakes up Bluetooth
BT_WAKE_
HOST*
50
DO
Bluetooth wakes up host
Other Interfaces
Pin Name
Pin No.
I/O
Description
Comment