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5
1. CIRCUIT DESCRIPTIONS
The recent mainstay of the CD LSI is the LSI integrating the core DSP with DAC or RF amplifier, which are generally
employed as peripheral circuits, however, PE5547A, used in this product, is an LSI integrating the afore-mentioned
LSI unit and microcomputer unit in one chip.
RF amplifier
Digital servo
PORT I/F
Port control
Fig.1.0.1 Block diagram of CD LSI PE5547A
5
6
A,B,E,F Signal
EFM
decoder
V850ES core
CX-3195
6
7
Internal RAM
BMC
(1Mbit)
CD-ROM
decoder
Audio
DSP
CIRC
1bit DAC
SRAM
Analog output
7
8
PE5547A
8
A
B
C
D
E
F
3
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