Hardware+Design V1.07

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mode after powering on or resetting the module every time if user wants to use Primary PCM.SIM5320
PCM Interface can be operated in Master or Slave mode if it is configured to primary PCM. In Master
Mode, the Module drives the clock and sync signals that are sent to the external codec. When it is in Slave
Mode, the external codec drives the clock and sync signals which are sent to the module. Both PCM
modes are discussed in this section followed by additional PCM topics.
Auxiliary PCM (128 KHz PCM clock)
υ-law coding is supported by the auxiliary PCM. The auxiliary codec port operates with standard
long-sync timing and a 128 KHz clock. The AUX_PCM_SYNC runs at 8 KHz with 50% duty cycle.
Most
υ-law codec support the 128 KHz clock.
Figure 31: Synchrony timing
Figure 32: EXT CODEC to MODULE timing
Figure 33: MODULE to EXT CODEC timing
SIM5320_Hardware Design_V1.07 2012-09-21
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