Wi-Fi&Bluetooth Module Series
FC80A_Hardware_Design 22 / 43
BT_CTS
BT_RTS
BT_RXD
BT_TXD
FC80A
UART_RXD
UART_TXD
UART_CTS
UART_RTS
Host
Figure 7: Reference Design for UART Interface Connection
3.5.3. BT_WAKE_HOST
*
and HOST_WAKE_BT
*
Table 11: Pin Definition of BT_WAKEUP_HOST and HOST_WAKEUP_BT
Pin Name
Pin No.
I/O
Description
Comment
HOST_WAKE_BT
49
DI
Host wakes up Bluetooth
VDDIO power domain
BT_WAKE_HOST
50
DO
Bluetooth wakes up host
3.5.4. PCM Interface
*
PCM interface is used for audio over Bluetooth-supported phone. The following table shows the pin
definition of PCM interface.
Table 12: Pin Definition of PCM 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
