40
WGATE
RFPDSH
Optical
Pick-up
LD
Driver
Write
Strategy
FsDAC
WDAC
IAPC
LPF
&
Gain
WFPDSH
FMON
LSRON
RWAPC
buffe
r
2.5VRE
F
Buffer
S/H
B/H
+
-
10
S/H
MU
X
AM
P
APCDAC
(REDA/WRDA)
SCLK, SDATA, WDEN
16
28
13
27
14
37
32
33
85
76
75
CN101
IC101 (HD153724TF)
IC301 (R8J32006FP)
BCNT
9
10
TCPH
36
72
106
R340
R342
C331
19,16,15
66,65,61
108
C334
DESCRIPTION OF CIRCUIT
1. ALPC (Automatic Laser Power Control) Circuit
1-1. Block Diagram