Sony MDS-EX77 Service Manual page 56

Pin No. Pin Name I / O
40 DVSS —
41 XOE O
42 XCAS O
43 A09 O
44 XRAS O
45 XWE O
46 D1 I/O
47 D0 I/O
48 D2 I/O
49 D3 I/O
50 MVCI I
51 ASYO O
52 ASYI I (A)
53 AVDD —
54 BIAS I (A)
55 RFI I (A)
56 AVSS —
57 PDO O (3)
58 PCO O (3)
59 FILI I (A)
60 FILO O (A)
61 CLTV I (A)
62 PEAK I (A)
63 BOTM I (A)
64 ABCD I (A)
65 FE I (A)
66 AUX1 I (A)
67 VC I (A)
68 ADIO O (A)
69 AVDD —
70 ADRT I (A)
71 ADRB I (A)
72 AVSS —
73 SE I (A)
74 TE I (A)
75 AUX2 I (A)
76 DCHG I (A)
77 APC I (A)
78 ADFG I
79 F0CNT O
80 XLRF O
81 CKRF O
82 DTRF O
83 APCREF O
84 LDDR O
Ground terminal (digital system)
Output enable signal output to the external D-RAM
Column address strobe signal output to the external D-RAM
Address signal output to the external D-RAM
Row address strobe signal output to the external D-RAM
Write enable signal output to the external D-RAM
Two-way data bus for the external D-RAM
Digital in PLL oscillation input from the external VCO
Playback EFM full-swing output
Playback EFM asymmetry comparator voltage input
Power supply terminal (+3.3V) (analog system)
Playback EFM asymmetry circuit constant current input
Playback EFM RF signal input from the CXA2523R (IC101)
Ground terminal (analog system)
Phase comparison output for clock playback analog PLL of the playback EFM
Phase comparison output for master clock of the recording/playback EFM master PLL
Filter input for master clock of the recording/playback master PLL
Filter output for master clock of the recording/playback master PLL
Internal VCO control voltage input of the recording/playback master PLL
Light amount signal (RF/ABCD) peak hold input from the CXA2523R (IC101)
Light amount signal (RF/ABCD) bottom hold input from the CXA2523R (IC101)
Light amount signal (ABCD) input from the CXA2523R (IC101)
Focus error signal input from the CXA2523R (IC101)
Auxiliary signal (I signal/temperature signal) input from the CXA2523R (IC101)
3
Middle point voltage (+1.65V) input from the CXA2523R (IC101)
Monitor output of the A/D converter input signal
Power supply terminal (+3.3V) (analog system)
A/D converter operational range upper limit voltage input terminal (fixed at "H" in this set)
A/D converter operational range lower limit voltage input terminal (fixed at "L" in this set)
Ground terminal (analog system)
Sled error signal input from the CXA2523R (IC101)
Tracking error signal input from the CXA2523R (IC101)
Auxiliary signal input terminal
Connected to the +3.3V power supply
Error signal input for the laser automatic power control
ADIP duplex FM signal (22.05 kHz ± 1 kHz) input from the CXA2523R (IC101)
Filter f0 control signal output to the CXA2523R (IC101)
Serial latch signal output to the CXA2523R (IC101)
Serial clock signal output to the CXA2523R (IC101)
Writing data output to the CXA2523R (IC101)
Control signal output to the reference voltage generator circuit for the laser automatic power
control
PWM signal output for the laser automatic power control
– 61 –
Function
Not used (open)
Not used (open)
Not used (open)
Not used (open)
Not used (open)
Not used (fixed at "L")
Not used (open)
Not used (fixed at "L")
Not used (fixed at "L")
Not used (open)
Not used (open)
Not used (open)