Pcm For Slic Or Codec; Pcm For Bluetooth Audio - Quectel RG520N-AT Hardware Design

4.6.1. PCM for SLIC or Codec

The module provides one PCM interface for SLIC or codec, which is multiplexed with I2S interface. Pin
definition of PCM for SLIC or codec is as follows:
Table 18: Pin Definition of PCM Interface for SLIC or Codec
Pin Name Pin No.
I2S_WS 259
I2S_SCK 256
I2S_DIN 257
I2S_DOUT 255
The reference design is illustrated as follows:
4.6.2. PCM for Bluetooth
The module provides one PCM interface only for Bluetooth audio. Pin definition of PCM for Bluetooth
audio is as follows:
RG520N-AT_Hardware_Design
Multiplexed
Function
PCM_SYNC
PCM_CLK
PCM_DIN
PCM_DOUT
Figure 25: Reference Circuit of SLIC PCM Interface
Audio*
I/O Description
DIO PCM data frame sync
DIO PCM clock
DI PCM data input
DO PCM data output
5G Module Series
Comment
In master mode, it is
an output signal.
In slave mode, it is an
input signal.
In master mode, it is
an output signal.
In slave mode, it is an
input signal.
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