Pcm Interface; Pcm Timing - SIM Tech SimCom SIM7100 Hardware Design

Table 13: Amphenol USIM Socket Pin Description
Pin Signal
C1 USIM_VDD
C2 USIM_RST
C3 USIM_CLK
C5 GND
C6 VPP
C7 USIM_DATA
3.6

PCM Interface

SIM7100 provides hardware PCM interface for external codec. SIM7100 PCM interface can be used in
short sync master mode only, and only supports 16 bits linear format.
Table 14: PCM Format
Characteristics
Line Interface Format
Data length
PCM Clock/Sync Source
PCM Clock Rate
PCM Sync Format
Data Ordering
Note: PCM interface can be controlled by AT command. For more details please refer to document [1]
3.6.1

PCM timing

SIM7100 supports 2.048 MHz PCM data and sync timing for 16 bits linear format codec.
SIM7100_Hardware Design_V1.01
Figure 22: Amphenol SIM card socket
Description
USIM Card Power supply.
USIM Card Reset.
USIM Card Clock.
Connect to GND.
USIM Card data I/O.
Specification
(Fixed)
Linear
16bits(Fixed)
Master Mode(Fixed)
2 048 KHz (Fixed)
Short sync(Fixed)
MSB
Figure 23: PCM_SYNC timing
36
Smart Machine Smart Decision
2015-01-20