Function Table Of Ic - Sharp CD-K477W Service Manual

CD-K477W
IC2 VHiLC78622K-1: Servo/Signal Control (LC78622K) (1/2)
Terminal Name Input/Output
Pin No.
1 DEFI
2 TAI
3 PDO
4 VVSS
5 ISET
6 VVDD
7 FR
8 VSS
9 EFMO
10 EFMIN
11 TEST2
12 CLV+
13 CLV-
14 V/P
15 HLF
16 TES
17 TOFF
18 TGL
19 JP+
20 JP-
21* PCK
22* FSEQ
23 VDD
24 CONT1
25 CONT2
26 CONT3
27 CONT4
28* CONT5
29* EMPH
30* C2F
31 DOUT
32* TEST3
33 TEST4
34 N.C.
35* MUTEL
36 LVDD
37* LCHO
38 LVSS
39 RVSS
40* RCH0
41 RVDD
42* MUTER
43 XVDD
44 XOUT
45 XIN
46 XVSS
47* SBSY
48* EFLG
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

FUNCTION TABLE OF IC

Input Input terminal of defect detection signal (DEF). (Connected to OV when not used.)
Input For PLL
Output
—
Input
—
Input
— Ground terminal of digital system. Surely connected to 0V.
Output For slice level control
Input
Input Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V.
Outout Output for disk motor control. 3 values can be output with the commands.
Output Output for disk motor control. 3 values can be output with the commands.
Output Monitor output terminal for automatic switch of rough servo/phase control.
"H" for rough servo, and "L" for phase servo.
Intput Input terminal of track detection signal. Schmit input.
Input Input terminal of tracking error signal. Schmit input.
Output Tracking OFF output terminal.
Output Output terminal for switch of tracking gain "L" increases the gain.
Output Output for track jump control. 3 values can be output with the commands.
Output Output for track jump control. 3 values can be output with the commands.
Output Clock monitor terminal for EFM data replay. 4,3218MHz as the phase clock.
Output Output terminal synchronous signal detection. "H" is output when synchronous signal detected
by EFM signal matches synchronous signal internally generated.
— Power terminal of digital system.
Input/Output General purpose input/output terminal 1
Input/Output General purpose input/output terminal 2
Input/Output General purpose input/output terminal 3
Input/Output General purpose input/output terminal 4
Input/Output General purpose input/output terminal 5
Output Difference monitor terminal At "H", deemphasis disk is being replayed.
Output C2 flag output terminal.
Output Output terminal of digital OUTPUT. (EIAJ format)
Input Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V.
Input Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V.
— Terminal not used. Open during operation.
Output L channel 1 bit DAC
—
Output
—
— R channel 1 bit DAC
Output
—
Output
— Power terminal for quartz oscillation.
Output Ground terminal of 16.9344 MHz quartz oscillator.
Input Ground terminal of 16.9344 MHz quartz oscillator.
— Ground terminal for quartz oscillation. Surely connected to 0V.
Output Output terminal of synchronous signal of subcode block.
Output Correction monitor terminal of C1, C2, single and double.
Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V.
Output terminal of phase comparison for external VCO control.
Ground terminal for integrated VCO. Surely connected to 0V.
Resistance connection terminal for current adjustment of PDO output.
Power terminal for integrated VCO.
VCO frequency range adjustment.
EFM signal output terminal.
EFM signal input terminal.
Mute output terminal for L channel.
Power terminal for L channel.
L channel output terminal.
Ground terminal for L channel Surely connected to 0V.
Ground terminal for R channel Surely connected to 0V.
R channel output terminal.
Power terminal for R channel.
Mute output terminal for R channel.
– 54 –
Function
Controlled with serial data command
from micro computer.
When not used, set it as the input terminal and
open it by connecting to 0V, or set it as the output
terminal and open it.