Sony HCD-GX470, Service Manual

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57
HCD-GX470/GX570
Pin No.
Pin Name I/O Description
46
FRDR O Focus servo drive signal (-) output terminal
47
IOVDD1 - Power supply terminal (+3.3V)
48
AVDD0 - Power supply terminal (+3.3V)
49
AVSS0 - Ground terminal
50
E I E signal input from the optical pick-up block
51
F I F signal input from the optical pick-up block
52 TEI I
Tracking error signal input terminal
53 TEO O
Tracking error signal output terminal
54 FEI I
Focus error signal input terminal
55 FEO O
Focus error signal output terminal
56
VC O Middle point voltage output terminal
57
A I A signal input from the optical pick-up block
58
B I B signal input from the optical pick-up block
59
C I C signal input from the optical pick-up block
60
D I D signal input from the optical pick-up block
61
AVDD4 - Power supply terminal (+3.3V)
62
RFDCO O RFDC signal output terminal Not used
63
PDSENS I Reference voltage input terminal for PD
64
AC_SUM O RFAC summing amplifier signal output terminal
65
EQ_IN I RF equalizer circuit input terminal
66
LD O
Laser diode on/off control signal output to the automatic power control circuit
"H": laser diode on
67 PD I
Light amount monitor input from the laser diode of optical pick-up block
68
RFC
I
Equalizer cut off frequency adjustment terminal
69
AVSS4 - Ground terminal
70
RFACO O EFM signal output terminal
71
RFACI I EFM signal input terminal
72
AVDD3 - Power supply terminal (+3.3V)
73 BIAS I
Asymmetry circuit constant current input terminal
74 ASYI I
Playback EFM asymmetry comparator voltage input terminal
75 ASYO O
Playback EFM full-swing output terminal
76
VPCO O Charge pump output terminal for broad-band EFM PLL
77
VCTL I VCO2 control voltage input terminal for broad-band EFM PLL
78
AVSS3 - Ground terminal
79
CLTV I VCO1 control voltage input terminal for multiplier
80
FILO O Filter output terminal for master PLL
81
FILI I Filter input terminal for master PLL
82
PCO O Charge pump output terminal for master PLL
83
SVSS - Ground terminal
84
SVDD - Power supply terminal (+1.8V)
85 SSTB-MP3
I MP3 standby on/off control signal input terminal "L": standby Not used
86
VDD - Power supply terminal (+1.8V)
87
VSS - Ground terminal
88 TEST1 I
Input terminal for the test Normally: fixed at "L"
89
DATA
I
CD serial data input from the system controller
90
CLK2
I
MP3 serial data transfer clock signal input from the system controller
91
SVSS - Ground terminal