Soundchip - Siemens S55 Repair Documentation

8.2 Soundchip

The D400 is used for Stereophonic Sound Generation. The internal CPU receives the
data from the EGOLD+
synthesizer and DA converter the analogue output signal (AUDI1_SND, AUDI2_SND)
goes to the audio amplifier inside the
(SND_13MHZ/
Miscellaneous U6
VCO.
Blockdiagram
V1.00
S55/S57
via the address- and data- bus. Via a 16 sound FM
Power Supply
) is made inside the
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ASIC. The clock for the D400
EGOLD+, based of the 26MHZ
ICM MP CCQ GRM
12/02