Sharp CD-BA200 Service Manual page 43

IC2 VHiLC78641E-1: Servo/Signal Control (LC78641E) (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 DRF
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 D/A converter L channel output terminal.
– –
– – R channel
OUTPUT 1/2VDD D/A converter R channel output terminal.
– –
– – For quartz
Input Oscillation
Output Oscillation
– –
Input –
Input – shock mode
Input –
Output L
Output L data output
Output L
Output Clock output 16.9344MHz output terminal.
Output L Output terminal of synchronous signal of subcode frame.
It drops when subcode stand by.
Output L Output terminal of synchronous signal of subcode block.
Output L Output terminal of subcodes P,A,R,S,T,U and W.
Input – Clock input terminal to read subcode. (When not used,connect to 0V)
Input –
Input – microcomputer
Input –
Output L
Output H
Output H
Input – Reset input terminal of LC78640. When turning on power, set it at "L".
Output L Focus ON detection terminal.
– – Power terminal for microcomputer interface.
– – Ground terminal of digital system. Surely connected to 0V.
In/Output Input mode General purpose input/output terminal 6.
In/Output Input mode General purpose input/output terminal 7.
Output H Monitor output terminal for automatic switch of rough servo/phase control.
"H" for rough servo, and "L" for phase servo.
Output L Output terminal synchronous signal detection. "H" is output when synchronous signal
detected by EFM signal matches synchronous signal internally generated.
In/Output Input mode Defect terminal. After resetting, it is configured as an input terminal. It can be controlled
Output Unfixed EFM signal output terminal.
L channel Power terminal for L channel.
Ground terminal for L channel. Surely connected to 0V.
Ground terminal for R channel. Surely connected to 0V.
Power terminal for R channel.
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)
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.
Bit clock output terminal.
L/R channel data output terminal.
For Chip enable signal input terminal.
Data transmission clock input terminal.
interface Data input terminal.
Data output terminal.
Interruption signal output terminal.
Interruption signal output terminal.
from the outside. It also becomes a defect monitor terminal under command control
– 43 –
CD-BA200
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.