Sony HCD-C7NT Service Manual page 76

HCD-C7NT
Pin No. Pin Name
48 D1
49 D0
50, 51 D2, D3
52 MVCI
53 ASYO
54 ASYI
55 AVDD
56 BIAS
57 RFI
58 AVSS
59 PCO
60 FILI
61 FILO
62 CLTV
63 PEAK
64 BOTM
65 ABCD
66 FE
67 AUX1
68 VC
69 ADIO
70 AVDD
71 ADRT
72 ADRB
73 AVSS
74 SE
75 TE
76 DCHG
77 TEST4
78 ADFG
79 F0CNT
80 XLRF
81 CKRF
82 DTRF
83 APCREF
84 TEST0
85 TRDR
• Abbreviation
EFM: Eight to Fourteen Modulation
PLL : Phase Locked Loop
VCO: Voltage Controlled Oscillator
76
I/O
I/O
I/O Data input/output for DRAM
I/O
I (S) Clock input from an external VCO (Fixed at "L")
O Playback EFM duplex signal output
I (A) Playback EFM comparator slice level input
— +3V power supply (Analog)
I (A) Playback EFM comparator bias current input
I (A) Playback EFM RF signal input from the CXA2523AR
— Ground (Analog)
O (3) Phase comparison output for the recording/playback EFM master PLL
I (A) Filter input for the recording/playback EFM master PLL
O (A) Filter output for the recording/playback EFM master PLL
I (A) Internal VCO control voltage input for the recording/playback EFM master PLL
I (A) Light amount signal peak hold input from the CXA2523AR
I (A) Light amount signal bottom hold input from the CXA2523AR
I (A) Light amount signal input from the CXA2523AR
I (A) Focus error signal input from the CXA2523AR
I (A) Auxiliary A/D input from the CXA2523AR
I (A) Middle point voltage (+1.5V) input from the CXA2523AR
O (A) Monitor output of the A/D converter input signal (Not used)
— +3V power supply (Analog)
I (A) A/D converter operational range upper limit voltage input (Fixed at "H")
I (A) A/D converter operational range lower limit voltage input (Fixed at "L")
— Ground (Analog)
I (A) Sled error signal input from the CXA2523AR
I (A) Tracking error signal input from the CXA2523AR
I (A) Connected to +3V power supply
I (A) Error signal input for the laser digital APC (Fixed at "H")
I (S) ADIP duplex FM signal input from the CXA2523AR (22.05 ± 1 kHz)
O Filter f0 control output to the CXA2523AR
O Control latch output to the CXA2523AR
O Control clock output to the CXA2523AR
O Control data output to the CXA2523AR
O Reference PWM output for the laser APC
O PWM output for the laser digital APC (Not used)
O Tracking servo drive PWM output (–) to the BH6519FS
Description