Sony HCD-MD373 Service Manual page 73

Pin No. Pin Name
48 D1
49 D0
50, 51 D2, D3
MVCI
52
ASYO
53
ASYI
54
AVDD
55
56 BIAS
57 RFI
58 AVSS
59 PCO
FILI
60
FILO
61
CLTV
62
PEAK
63
64 BOTM
65 ABCD
66 FE
67 AUX1
68 VC
ADIO
69
AVDD
70
ADRT
71
ADRB
72
73 AVSS
74 SE
75 TE
76 DCHG
77 APC
ADFG
78
F0CNT
79
XLRF
80
CKRF
81
82 DTRF
83 APCREF
84 TEST0
85 TRDR
• Abbreviation
EFM: Eight to Fourteen Modulation
PLL : Phase Locked Loop
VCO: Voltage Controlled Oscillator
I/O
I/O
Data input/output for DRAM
I/O
I/O
Clock input from an external VCO (Fixed at "L")
I (S)
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
Ground (Analog)
—
Phase comparison output for the recording/playback EFM master PLL
O (3)
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 CXA2523R
I (A) Light amount signal bottom hold input from the CXA2523R
I (A) Light amount signal input from the CXA2523R
I (A) Focus error signal input from the CXA2523R
Auxiliary A/D input
I (A)
Middle point voltage (+1.5V) input from the CXA2523R
I (A)
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 CXA2523R
Tracking error signal input from the CXA2523R
I (A)
Connected to +3V power supply
I (A)
Error signal input for the laser digital APC (Fixed at "L")
I (A)
I (S) ADIP duplex FM signal input from the CXA2523R (22.05 ± 1 kHz)
O Filter f control output to the CXA2523R
0
O Control latch output to the CXA2523R
O Control clock output to the CXA2523R
O Control data output to the CXA2523R
Reference PWM output for the laser APC
O
PWM output for the laser digital APC (Not used)
O
Tracking servo drive PWM output (–)
O
Function
73