Sony HCD-GX255 Service Manual page 120

HCD-GX255/RG170/RG470
Pin No.
Pin Name
45 FFDR
46 FRDR
47 IOVDD1
48 AVDD0
49 AVSS0
50 E
51 F
52 TEI
TEO
53
FEI
54
FEO
55
56 VC
57 A
58 B
59 C
60 D
61 AVDD4
62 RFDCO
63 PDSENS
64 AC_SUM
65 EQ_IN
66 LD
PD
67
68 RFC
69 AVSS4
70 RFACO
71 RFACI
72 AVDD3
BIAS
73
ASYI
74
ASYO
75
76 VPCO
77 VCTL
78 AVSS3
79 CLTV
80 FILO
81 FILI
82 PCO
83 SVSS
84 SVDD
SSTB-MP3
85
86 VDD
87 VSS
88 TEST1
89 DATA
16
I/O
O Focus servo drive signal (+) output to the coil/motor driver
O Focus servo drive signal (-) output to the coil/motor driver
- Power supply terminal (+3.3V)
- Power supply terminal (+3.3V)
- Ground terminal
I E signal input from the optical pick-up block
I F signal input from the optical pick-up block
I Tracking error signal input terminal
O
Tracking error signal output terminal
I
Focus error signal input terminal
O
Focus error signal output terminal
O Middle point voltage output terminal
I A signal input from the optical pick-up block
I B signal input from the optical pick-up block
I C signal input from the optical pick-up block
I D signal input from the optical pick-up block
- Power supply terminal (+3.3V)
O Not used
I Not used
O RFAC summing amplifier signal output terminal
I RF equalizer circuit input terminal
Laser diode on/off control signal output to the automatic power control circuit
O
"L": laser off, "H": laser on
I
Light amount monitor input from the optical pick-up block laser diode
I Equalizer cut off frequency adjustment terminal
- Ground terminal
O EFM signal output terminal
I EFM signal input terminal
- Power supply terminal (+3.3V)
I
Asymmetry circuit constant current input terminal
I
Playback EFM asymmetry comparator voltage input terminal
O
Playback EFM full-swing output terminal
O Charge pump output terminal for broad-band EFM PLL
I VCO2 control voltage input terminal for broad-band EFM PLL
- Ground terminal
I VCO1 control voltage input terminal for multiplier
O Filter output terminal for master PLL
I Filter input terminal for master PLL
O Charge pump output terminal for master PLL
- Ground terminal
- Power supply terminal (+1.8V)
I MP3 standby on/off control signal input terminal "L": standby Not used
- Power supply terminal (+1.8V)
- Ground terminal
I Test terminal Normally: fixed at "L"
I
CD serial data input from the system controller
Description