Users Manual
LTE Standard Module Series
EC25 Hardware Design
EC25_Hardware_Design
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Figure 22: Primary Mode Timing
Figure 23: Auxiliary Mode Timing
The following table shows the pin definition of PCM and I2C interfaces which can be applied on audio
codec design.
Table 14: Pin Definition of PCM and I2C Interfaces
Pin Name Pin No. I/O Description Comment
PCM_IN 24 DI PCM data input 1.8V power domain
PCM_OUT 25 DO PCM data output 1.8V power domain