Automotive Module Series
AG525R-GL QuecOpen
Hardware Design
AG525R-GL_QuecOpen_Hardware_Design 57 / 104
3.12. I2S and I2C Interfaces
The module provides I2S and I2C interfaces for audio function design.
Table 17: Pin Definition of I2S Interface
Table 18: Pin Definition of I2C Interface
Pin Name Pin No. I/O Description Comment
I2C1_SCL 79 OD I2C serial clock
Require external pull-up to 1.8
V.
I2C1_SDA 80 OD I2C serial data
The following figure shows a reference design of I2S and I2C interfaces with an external codec IC.
Figure 24: Reference Circuit of I2S and I2C Application with Audio Codec
Pin Name Pin No. I/O Description Comment
CDC_RST 77 DO Codec reset
1.8 V power domain.
Can be configured to
GPIOs.
I2S_MCLK 81 DO Clock output for codec
I2S_WS 73 IO I2S word select
I2S_SCK 75 DO I2S clock
I2S_DIN 76 DI I2S data in
I2S_DOUT 78 DO I2S data out
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