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SIM800H _Hardware Design_V2.03
40
2016-10-10
SIM800H PCM interface only supply master mode, data length is 16 bits (linear)
,
PCM clock rate is 256kHz.
Table 21: PCM specification
Note: Customer can use AT command control PCM interface. For detail, please refer to document [1].
4.9.1.
PCM reference circuit
Refer to the following figure for PCM design:
Module
CODEC
PCMIN
PCMSYNC
PCMOUT
PCMCLK
GND
GND
PCM_IN
PCM_OUT
PCM_SYNC
PCM_CLK
Figure 36: PCM reference circuit
PCM_OUT
30
PCM data output
PCM_SYNC
65
PCM synchrony
PCM_IN
66
PCM data input
Parameter
Specification
Line Interface Format
Linear(Fixed)
Data length
16bits(Fixed)
PCM Clock/Sync Source
Master Mode(Fixed)
PCM Clock Rate
256kHz(Fixed)
PCM Sync Format
Short sync/Long sync both support
Zero Padding/Sign extension Zero Padding(Fixed)
Data Ordering
MSB/LSB both support
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