Product Info

LPWA Module Series
BG600L-M3 Hardware Design
BG600L-M3_Hardware_Design 46 / 83
2.12 PCM and I2C Interfaces*
BG600L-M3 provides one Pulse Code Modulation (PCM) digital interface and one I2C interface. The
following table shows the pin definition of the two interfaces which can be applied on audio codec design.
Table 16: Pin Definition of PCM and I2C Interfaces
The following figure shows a reference design of PCM and I2C interfaces with an external codec IC.
Figure 20: Reference Circuit of PCM Application with Audio Codec
“*” means under development.
Pin Name Pin No. I/O Description Comment
PCM_CLK 59 DO
PCM clock 1.8 V power domain
PCM_SYNC 61 DO
PCM data frame sync 1.8 V power domain
PCM_DIN 62 DI
PCM data input 1.8 V power domain
PCM_DOUT 60 DO PCM data output
1.8 V power domain
I2C_SCL 58 OD
I2C serial clock
(for external codec)
Require external pull-up to 1.8 V
I2C_SDA 57 OD
I2C serial data
(for external codec)
Require external pull-up to 1.8 V
NOTE