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V 1.0 Page 48of 52 ICM MP CCQ GRM
SL55
Company Confidential © Copyright Siemens AG
06/03
8.2 Soundchip
The D400 is used for Stereophonic Sound Generation. The internal CPU receives the
data from the EGOLD+ via the address- and data- bus. Via a 16 sound FM synthesizer
and DA converter the analogue output signal (AUDI1_SND, AUDI2_SND) goes to the
audio amplifier inside the Power Supply ASIC. The clock for the D400
(SND_13MHZ/
Miscellaneous U6) is made inside the EGOLD+, based of the 26MHZ VCO.
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