Pcm Interface; Pcm Timing - SimCom SIM7000 Hardware Design

3.6

PCM Interface

SIM7000 provides a PCM interface for external codec, which can be used in master mode with
short sync and 16 bits linear format.
Table 14: PCM format
Characteristics
Line Interface Format
Data length
PCM Clock/Sync Source
PCM Clock Rate
PCM Sync Format
Data Ordering
Note: For more details about PCM AT commands, please refer to document [1].
3.6.1

PCM timing

SIM7000 supports 2.048 MHz PCM data and sync timing for 16 bits linear format codec.
Specification
(Fixed)
Linear
16bits(Fixed)
Master Mode(Fixed)
2
048 KHz (Fixed)
Short sync(Fixed)
MSB
Figure 19: PCM_SYNC timing
Figure 20: External codec to module timing