User's Manual

Smart Machine Smart Decision
SIM5320ALD_User Manual_V1.01 2014-08-20
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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)
-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
-law codec support the 128 KHz clock.
Figure 30: Synchrony timing
Figure 31: EXT CODEC to MODULE timing
Figure 32: MODULE to EXT CODEC timing