Service manual

32
HCD-NEZ30
Pin No.
Pin Name I/O Description
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 Not used
63 PDSENS I Not used
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
"L": laser off, "H": laser on
67
PD I
Light amount monitor input from the optical pick-up block laser diode
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
Test terminal 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
92 SVDD - Power supply terminal (+2.5V)
93 JTAGTCK - Not used
94 JTAGTDI - Not used
95 JTAGTDO - Not used
96 JTAGTMS - Not used