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
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.
Figure 19: PCM_SYNC timing
Figure 20: External codec to module timing
Characteristics Specification
Line Interface Format
Linear(Fixed)
Data length 16bits(Fixed)
PCM Clock/Sync Source Master Mode(Fixed)
PCM Clock Rate
2048 KHz (Fixed)
PCM Sync Format Short sync(Fixed)
Data Ordering MSB
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