Quectel AF20 User Manual

Wi-Fi&Bluetooth Module Series
AF20_Hardware_Design
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Figure 7: Block Diagram of Bluetooth Application Interface Connection
3.6.1. BT_EN
BT_EN is used to control the Bluetooth function of AF20 module. Bluetooth function will be enabled when
BT_EN is at high level.
Table 8: Pin Definition of BT_EN
Pin Name
Pin No.
I/O
Description
Comment
BT_EN
10
DI
Bluetooth enable control
1.8 V power domain.
Active high.
3.6.2. PCM Interface
Table 9: Pin Definition of PCM Interface
Pin Name
Pin No.
I/O
Description
Comment
PCM_IN
13
DI
PCM data input
1.8 V power domain
PCM_SYNC
14
DI
PCM data frame
synchronization signal
PCM_CLK
15
DI
PCM clock signal
PCM_OUT
16
DO
PCM data output
The following figure shows the reference design for PCM interface.

Quectel AF20 Specifications

General

Brand	Quectel
Model	AF20
Category	GSM/GPRS Modules
Language	English