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Table 11: Pin Definition of PCM Interface
Pin Name
Pin No.
PCM_SYNC
27
PCM_DIN
28
PCM_DOUT
29
PCM_CLK
30
The following figure shows the PCM interface connection between FC800L and the host.
3.7. Other Interfaces
3.7.1. RTC_CLK
The RTC_CLK 32.768 kHz is used for internal PMU reference clock.
Table 12: Pin Definition of RTC_CLK
Pin Name
Pin No.
RTC_CLK
31
NOTE
RTC_CLK should surrounded by GND.
FC800L_Hardware_Design
I/O
Description
DI
PCM data frame sync
DI
PCM data input
DO
PCM data output
DI
PCM clock
PCM_CLK
PCM_SYNC
FC800L
PCM_DOUT
PCM_DIN
Figure 7: PCM Interface Connection
I/O
Description
DI
External 32.768 kHz clock input
Wi-Fi&Bluetooth Module Series
Comment
VDDIO power domain
PCM_CLK
PCM_SYNC
Host
PCM_DIN
PCM_DOUT
Comment
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