Wi-Fi&BT Module Series
AF50T Hardware Design
AF50T_Hardware_Design 24 / 52
Figure 8: PCM Interface Connection
“*” means BT PCM interface of AF50T is still under development.
3.6.3. UART Interface
The following table shows the pin definition of UART interface.
Table 9: Pin Definition of UART Interface
Pin Name
Pin No.
I/O
Description
Comment
BT_RTS
77
DO
BT UART request to send
1.8 V power domain
BT_CTS
38
DI
BT UART clear to send
1.8 V power domain
BT_TXD
39
DO
BT UART transmit
1.8 V power domain
BT_RXD
78
DI
BT UART receive
1.8 V power domain
The following figure shows the reference design for UART interface connection between AF50T and
AG55xQ series modules.
NOTE