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3.6.3. BT_WAKE_HOST and HOST_WAKE_BT
BT_WAKE_HOST and HOST_WAKE_BT are used to wake up Bluetooth function.
Table 15: Pin Definition of BT_WAKEUP_HOST and HOST_WAKEUP_BT
Pin Name
HOST_WAKE_BT
BT_WAKE_HOST
3.6.4. PCM Interface
PCM interface is used for audio over Bluetooth. The following table shows the pin definition of PCM
interface.
Table 16: 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 FC908A and the host.
FC908A_Hardware_Design
Pin No.
I/O
Description
6
DI
Host wakes up Bluetooth function
7
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
PCM_CLK
FC908A
PCM_SYNC
PCM_DOUT
PCM_DIN
Figure 9: PCM Interface Connection
Wi-Fi&Bluetooth Module Series
Comment
VDDIO power
domain.
Comment
VDDIO power domain.
PCM_CLK
Host
PCM_SYNC
PCM_DIN
PCM_DOUT
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