Sharp CD-BK1600V Service Manual page 47

IC2 VHiLC78636E-1: Servo/Signal Control (LC78636E) (2/2)
Terminal Name Input/Output Setting in Reset
Pin No.
44 LVDD
45 LCHO
46 LVSS
47 RVSS
48 RCHO
49 RVDD
50 XVDD
51 XIN
52 XOUT
53 XVSS
54 ASLRCK
55 ASDACK
56 ASDFIN
57* LRSY
58* DATACK
59* DATA
60* 16M
61* SFSY
62* SBSY
63* PW
64 SBCK
65 CE
66 CL
67 DI
68 DO
69 INT
70 WRQ
71 RES
72 DEF
73 VDD5V
74 VSS
75 CONT6
76 CONT7
77* V/P
78* FSEQ
79* DEFECT
80* EFMO
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Be sure to supply the same potential to each power terminal. (VVDD,ADAVDD,VDD,LVDD,RVDD,XVDD)
Terminal witch is controlled by the power terminal (VDD5V) for a microcomputer interface :
CE (65pin), CL (66pin), DI (67pin), DO (68pin), INT (69pin), WRQ (70pin), RES (71pin), DRF (72pin),
CONT6 (75pin), CONT7 (76pin)
– –
Output 1/2VDD
– –
– –
Output 1/2VDD
– –
– –
Input Oscillation
Output Oscillation
– –
Input –
Input –
Input –
Output L
Output L
Output L
Output Clock output
Output L
Output L
Output L
Input –
Input –
Input –
Input –
Output L
Output H
Output H
Input –
Output L
– –
– –
In/Output Input mode
In/Output Input mode
Output H
Output L
In/Output Input mode
Output Unfixed
L channel Power terminal for L channel.
D/A converter L channel output terminal.
Ground terminal for L channel. Surely connected to 0V.
R channel Ground terminal for R channel. Surely connected to 0V.
D/A converter R channel output terminal.
Power terminal for R channel.
For quartz Power terminal for quartz oscillation.
oscillation Ground terminal of 16.9344MHz quartz oscillation.
Ground terminal for quartz oscillation. Surely connected to 0V.
For anti L/R clock input terminal. (When not used,connect to 0V)
shock mode Bit clock input terminal. (When not used,connect to 0V)
L/R channel data input terminal. (When not used,connect to 0V)
For digital L/R clock output terminal.
data output Bit clock output terminal.
L/R channel data output terminal.
16.9344MHz output terminal.
Output terminal of synchronous signal of subcode frame.
It drops when subcode stand by.
Output terminal of synchronous signal of subcode block.
Output terminal of subcodes P,A,R,S,T,U and W.
Clock input terminal to read subcode. (When not used,connect to 0V)
For Chip enable signal input terminal.
microcomputer Data transmission clock input terminal.
interface Data input terminal.
Data output terminal.
Interruption signal output terminal.
Interruption signal output terminal.
Reset input terminal of LC78640. When turning on power, set it at "L".
Focus ON detection terminal.
Power terminal for microcomputer interface.
Ground terminal of digital system. Surely connected to 0V.
General purpose input/output terminal 6.
General purpose input/output terminal 7.
Monitor output terminal for automatic switch of rough servo/phase control.
"H" for rough servo, and "L" for phase servo.
Output terminal synchronous signal detection. "H" is output when synchronous signal
detected by EFM signal matches synchronous signal internally generated.
Defect terminal. After resetting, it is configured as an input terminal. It can be controlled
from the outside. It also becomes a defect monitor terminal under command control
EFM signal output terminal.
– 47 –
CD-BK1600V/1800V/190V
Function
Controlled with serial data command
from microcomputer. 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.