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1
1. CIRCUIT OVER VIEW
A
Concerning CD LSI, beside the core DSP, LSI which unifies DAC once used as peripheral circuit or RF amp is the
mainstream, and UPD63763AGJ,UPD63761AGJ is a multifunction LSI which has a plenty of functions such as existing
CD and replay CD-ROM storing MP3/WMA file by embedding CD-ROM decoder or MP3/WMA decoder.
*X-3116 has built-in WMA decoder by each LSI function, but is not corresponded to its specification.
A-F
B
C
Digital servo
UPD63763AGJ,
UPD63761AGJ
D
Fig.1 UPD63763AGJ(X-3168),UPD63761AGJ(X-3116) block diagram
E
F
2
1
2
CD-ROM
decoder
RF amp
EFM
Signal
processing
Microcomputer
2
3
Built-in SRAM (1M bit)
Buffer memory
controller (BMC)
MP3/WMA
decoder
DAC
Audio output
CX-3168
3
4
SDRAM
16Mbit
4
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