Aiwa CSD-A340 Service Manual page 31

IC DESCRIPTION-2/3 (LC78622NE)-1/2
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, 13 CLV+, CLK-
14 V/P
15 HFL
16 TES
17 TOFF
18 TOL
19, 20 JP+, JP-
21 PCK
22 FSEQ
23 VDD
24 SL+
25 SL-
26 —
27 PUIN
28 RW
29 EMPH
30 C2F
31 DOUT
32, 33 T3, T4
34 N.C.
35 MUTEL
36 LVDD
37 LCHO
38 LVSS
39 RVSS
40 RCHO
41 RVDD
42 MUTER
I/O
I Defect sense signal (DEF) input pin. (Connect to 0V when not used).
I Test signal input pin with built-in pull-down resistor. Be sure to connect to 0V.
O Phase comparator output pin to control external VCO.
— GND pin for built-in VCO. Be sure to connect to 0V.
For PLL.
I Pin to which external resistor adjusting the PD0 output current.
— Power supply pin for built-in VCO.
I Pin for VCO frequency range adjustment.
— Digital system GND. Be sure to connect to 0V.
O
For slice level control.
I
I Test signal input pin with built-in pull-down resistor. Be sure to connect to 0V.
O Disc motor control output. Three level output is possible using command.
Rough servo or phase control automatic selection monitoring output pin. Rough servo at H.
O
Phase servo at L.
I Track detect signal input pin. Schmidt input.
I Tracking error signal input pin. Schmidt input.
O Tracking OFF output pin.
O Tracking gain selection output pin. Gain boost at L.
O Track jump control signal output pin. Three level output is possible using command.
O EFM data playback clock monitoring pin 4.3218 MHz when phase is locked in. (Not connected)
Sync signal detection output pin. H when the sync signal which is detected from EFM signal and
O
thesync signal which is internally generated agree. (Not connected)
— Digital system power supply pin.
O Moves the sled to outer circumference.
O Moves the sled to inner circumference.
— Not connected.
I CD pickup inner switch detection.
O Read, wright signal.
O De-emphasis monitor output pin. De-emphasis disc is being played back at H. (Not connected)
O C2 flag output pin. (Not connected)
O DIGITAL OUT output pin. (EIAJ format). (Not connected)
I Test signal input pin with built-in pull-down resistor. Be sure to connect to 0V.
— Not connected. Set the pin to open.
O
—
L-channel 1-bit DAC.
O
—
—
O
R-channel 1-bit DAC.
—
O
Description
EFM signal output pin.
EFM signal input pin.
L-channel mute output pin. (Not connected)
L-channel power supply pin.
L-channel output pin.
L-channel GND. Be sure to connect to 0V.
R-channel GND. Be sure to connect to 0V.
R-channel output pin.
R-channel power supply pin.
R-channel mute output pin. (Not connected)
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