Shanghai SIMCom Wireless Solutions Limited SIM7000A ユーザーズマニュアル

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 21: PCM_SYNC timing

Figure 22: 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

048 KHz (Fixed)

PCM Sync Format

Short sync(Fixed)

Data Ordering

MSB