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Table 13: Pin Definition of BT_WAKEUP_HOST and HOST_WAKEUP_BT
Pin Name
Pin No.
HOST_WAKE_BT
6
BT_WAKE_HOST
7
3.6.4. PCM Interface
PCM interface is used for audio over Bluetooth. The following table shows the pin definition of PCM
interface.
Table 14: Pin Definition of PCM Interface
Pin Name
Pin No.
PCM_DOUT
25
PCM_CLK
26
PCM_DIN
27
PCM_SYNC
28
The following figure shows the PCM interface connection between FC905A and the host.
FC905A_Hardware_Design
I/O
Description
DI
Host wakes up Bluetooth function
DO
Bluetooth function wakes up host
I/O
Description
DO
PCM data output
DI
PCM clock
DI
PCM data input
DI
PCM data frame sync
FC905A
PCM_DOUT
PCM_SYNC
PCM_DIN
PCM_CLK
Figure 7: PCM Interface Connection
Wi-Fi&Bluetooth Module Series
Comment
VIO power domain.
If unused, keep them open.
Comment
VIO power domain.
If unused, keep them open.
HOST
PCM_DIN
PCM_SYNC
PCM_DOUT
PCM_CLK
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