Sony MDS-PC1 Service Manual page 63

Pin No.
Pin Name
46 D1
47 D0
48, 49 D2, D3
MVCI
50
ASYO
51
52 ASYI
AVDD
53
54 BIAS
55 RFI
AVSS
56
PDO
57
58 PCO
FILI
59
FILO
60
61 CLTV
PEAK
62
63 BOTM
ABCD
64
65 FE
66 AUX1
VC
67
68 ADIO
AVDD
69
70 ADRT
ADRB
71
72 AVSS
73 SE
TE
74
75 AUX2
76 DCHG
APC
77
78 ADFG
79 F0CNT
80 XLRF
CKRF
81
DTRF
82
83
APCREF
LDDR
84
85 TRDR
• Abbreviation
EFM: Eight to Fourteen Modulation
PLL : Phase Locked Loop
VCO: Voltage Controlled Oscillator
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)
Playback EFM comparator bias current input
I (A)
I (A)
Playback EFM RF signal input
— Ground (Analog)
Phase comparison output for the clock playback analog PLL of the playback EFM
O (3)
(Not used)
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 CXA2523R
Light amount signal bottom hold input from the CXA2523R
I (A)
I (A) Light amount signal input from the CXA2523R
I (A)
Focus error signal input from the CXA2523R
Auxiliary A/D input
I (A)
I (A) Middle point voltage (+1.5V) input from the CXA2523R
O (A) Monitor output of the A/D converter input signal (Not used)
— +3V power supply (Analog)
A/D converter operational range upper limit voltage input (Fixed at "H")
I (A)
I (A) A/D converter operational range lower limit voltage input (Fixed at "L")
—
Ground (Analog)
Sled error signal input from the CXA2523R
I (A)
I (A) Tracking error signal input from the CXA2523R
I (A) Auxiliary A/D input (Fixed at "L")
I (A) Connected to +3V power supply
I (A) Error signal input for the laser digital APC (Fixed at "L")
ADIP duplex FM signal input from the CXA2523R (22.05 ± 1 kHz)
I (S)
O control output to the CXA2523R
Filter f
0
Control latch output to the CXA2523R
O
O Control clock output to the CXA2523R
O Control data output to the CXA2523R
Reference PWM output for the laser APC
O
O PWM output for the laser digital APC (Not used)
Tracking servo drive PWM output (–)
O
– 78 –
Function