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3.6. Bluetooth Application Interface
The following figure shows the block diagram of Bluetooth interface connection between AF51Y and the
host.
If Bluetooth function of AF51Y module is used, the UART and PCM interfaces of AF51Y must be
connected to that of the host.
AF51Y
Figure 6: Block Diagram of Bluetooth Interface Connection
3.6.1. BT_EN
BT_EN is used to control the Bluetooth function of AF51Y module. Bluetooth function will be enabled
when BT_EN is at high level.
Table 8: Pin Definition of BT_EN
Pin Name
Pin No.
BT_EN
83
3.6.2. PCM
Interface*
Table 9: Pin Definition of PCM Interface
Pin Name
Pin No.
PCM_DIN
76
PCM_SYNC
35
AF51Y_Hardware_Design
UART
PCM
BT_EN
I/O
Description
DI
Bluetooth enable control
I/O
Description
DI
PCM data input
DI
PCM data frame sync
Wi-Fi&Bluetooth Module Series
UART
PCM
HOST
BT_EN
Comment
Active high.
Comment
1.8 V power domain
1.8 V power domain
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