Wi-Fi&BT Module Series
AF50T Hardware Design
AF50T_Hardware_Design 23 / 52
If BT function of AF50T module is used, the UART and PCM interfaces of AF50T must be connected to
that of AG55xQ series module.
Figure 7: Block Diagram of BT Interface Connection
3.6.1. BT_EN
BT_EN is used to control the BT function of AF50T module. BT function will be enabled when BT_EN is at
high level.
Table 7: Pin Definition of BT_EN
Pin Name
Pin No.
I/O
Description
Comment
BT_EN
83
DI
BT enable control
Active high.
3.6.2. PCM Interface*
The following table shows the pin definition of PCM interface.
Table 8: Pin Definition of PCM Interface
Pin Name
Pin No.
I/O
Description
Comment
PCM_DIN
76
DI
PCM data input
1.8 V power domain
PCM_SYNC
35
DI
PCM data frame sync
1.8 V power domain
PCM_CLK
37
DI
PCM clock
1.8 V power domain
PCM_DOUT
36
DO
PCM data output
1.8 V power domain
The following figure shows the PCM interface connection between AF50T and AG55xQ series modules.