SIM8300G-M2 Hardware Design V1.01 Draft

SIM8300G-M2 Hardware Design V1.01
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3.9.2 I2S Reference Circuit
The following figure is the external codec reference design circuit.
Figure 19: Audio codec diagram circuit
Table 26: Definition of I2S interface
Pin name
Pin no.
Electrical
description
Description
Comment
I2S_CLK
20
DO
I2S clock output
1.8V voltage
domain, also
can be used as
PCM interface, If
unused, please
keep open
I2S_RX
22
DI
I2S data input
I2S_TX
24
DO
I2S data output
I2S_WA
28
DO
I2S word alignment select (L/R)
I2S_MCLK
60
DO
I2S master clock
The PCM interface is multiplexing with I2S interface. The default audio interface of the module is I2S.
Table 27: The PCM interface is multiplexing with I2S interface
Pin name
PCM interface
I2S_RX
PCM_DIN
I2S_TX
PCM_OUT
I2S_WA
PCM_SYNC
I2S_CLK
PCM_CLK
I2S_MCLK
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