Smart Machine Smart Decision
SIM5320JE-TE_Hardware Design_V1.01
2012-07-10
44
PCM mode after powering on or resetting the module every time if user wants to use Primary
PCM.SIM5320JE-TE 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
32
: Synchrony timing
Figure
33
: EXT CODEC to MODULE timing
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