Aiwa CSD-FD71 Service Manual page 23

IC, LC78622ED
Pin No. Pin Name
1 DEFI
2 TAI
3 PDO
4 VVSS
5 ISET
6 VVDD
7 FR
8 VSS
9 EFMO
10 EFMIN
11 T2
12 CLV+
13 CLV–
14 V/P
15 HFL
16 TES
17 TOFF
18 TGL
19 JP+
20 JP–
21 PCK
22 FSEQ
23 VDD
24 SL+
25 SL–
26 CONT3
27 PU IN
28 RW
29 EMPH
30 C2F
31 DOUT
32 T3
33 T4
34 NC
35 MUTEL
36 LVDD
37 LCHO
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I/O
I Defect detection signal (DEF) input.
I Test input. A pull-down resistor is built in. Must be connected to 0V.
O External VCO control phase comparator output.
– Internal VCO ground. Must be connected to 0V.
O PDO output current adjustment resistor connection.
– Internal VCO power supply.
I VCO frequency range adjustment.
– Digital system ground. Must be connected to 0V.
O Slice level control; EFM signal output.
I Slice level control; EFM signal input.
I Test input. A pull-down resistor is built in. Must be connected to 0V.
Disc motor control output.
O
Three-value ouput is also possible when specified by microprocessor command.
Rough servo/phase control automatic switching monitor output. Outputs a high level
O
during rough servo and a low level during phase control.
I Track detection signal input. This is a Schmitt input.
I Tracking error signal input. This is a Schmitt input.
O Tracking off output.
O Tracking gain switching output. Increase the gain when low.
Track jump output.
O
Three-value output is also possible when specified by microprocessor command.
EFM data playback clock monitor. Outputs 4.3218 MHz when the phase is locked.
O
(Not used)
Synchronization signal detection ouput. Outputs a high level when the synchronization
O signal detected from the EFM signal and the internally generated synchronization signal
agree. (Not used)
– Digital system power supply.
O Serial data command sled signal output terminal from microprocessor.
– Not used.
I CD pickup inside limit switch.
O Serial data command sled output terminal from microprocessor.
De-emphasis monitor pin. A high level indicates playback of a de-emphasis disk.
O
(Not used)
O C2 flag output. (Not used)
O Digital output (EIAJ format). (Not used)
I Test input. A pull-down resistor is built in. Must be connected to 0V.
– Unused. Must be left open.
O Left channel one-bit D/A converter mute output. (Not used)
– Left channel one-bit D/A converter power supply.
O Left channel one-bit D/A converter output.
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Description