Audio Interface; Figure 12: Rtc Functional - Wavecom CM52 Integrator's Manual

2.6

Audio Interface

The audio-related signals are: the analog audio signals
ATMS (Audio to Mobile Station),
AFMS (Audio from Mobile Station),
PCM (Pulse Code Modulation) signals (PCMULD, PCMDLD, PCMCLK, and PCMSYNC).
Pin
7
10
9
17
18
19
20
CM52 Integrators' Manual
WI_DEV_CM52_UGD_001-001
Page 27 of 53
Figure 12: RTC Functional Block Diagram
Signal Description
AFMS Audio Output From Wireless CPU
ATMS Audio Input to Wireless CPU
AGND Analog Reference
PCMCLK PCM Clock Output from Wireless CPU
PCMSYNC PCM Frame Sync Output from Wireless CPU
PCMULD PCM Voice Input to Wireless CPU
PCMDLD PCM Voice Output from Wireless CPU
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Table 16: CM52 Audio Signals
CM52 Integrators' Manual
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