Installation Instructions

SIM5216A _HD_V1.02 Hardware Design
SIM5216A _HD_V1.02 26.08.2010
50
Default values of
sound level
(level 1 to 4)
0
0
0
0
NOTE: Please check the reference document [1] for detailed information of each AT command.
Both PCM modes are discussed in this section, followed by additional PCM topics.
3.18.1 Auxiliary PCM (128 kHz PCM clock)
The auxiliary PCM interface enables communication with an external codec to support
hands-free applications. υ-law codec are supported by the auxiliary PCM interface.
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 28：AUX_PCM_SYNC timing
Figure 29：EXT_CODEC to SIM5216A timing