Sunsea AIoT SIMCom SIM7600NA, User Manual, Page: 41 / 74

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SIM7600NA_user manual _V1.00 41 2020-1-7
Figure 257: Module to EXT codec timing
Table 16: PCM timing parameters
Parameter Description Min. Typ. Max. Unit
T(sync) PCM_SYNC cycle time – 125 – μs
T(synch) PCM_SYNC high level time – 488 – ns
T(syncl) PCM_SYNC low level time – 124.5 – μs
T(clk) PCM_CLK cycle time – 488 – ns
T(clkh) PCM_CLK high level time – 244 – ns
T(clkl) PCM_CLK low level time – 244 – ns
T(susync)
PCM_SYNC setup time high before falling edge of
PCM_CLK
– 244 – ns
T(hsync)
PCM_SYNC hold time after falling edge of
PCM_CLK
– 244 – ns
T(sudin)
PCM_IN setup time before falling edge of
PCM_CLK
60 – – ns
T(hdin) PCM_IN hold time after falling edge of PCM_CLK 10 – – ns
T(pdout) Delay from PCM_CLK rising to PCM_OUT valid – – 60 ns
T(zdout)
Delay from PCM_CLK falling to PCM_OUT
HIGH-Z
– 160 - ns
3.8.2 PCM Application Guide
The following figure shows the external codec reference design.