Sharp CD-BK100W Service Manual page 47

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 Input/Output
76 CONT7 Input/Output
77* V/P
78* FSEQ
79 DEFECT Input/Output
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 (VDD5 V) for a microcomputer interface :
CE (65 pin), CL (66 pin), DI (67 pin), DO (68 pin), INT (69 pin), WRQ (70 pin), RES (71 pin), DRF (72 pin),
CONT6 (75 pin), CONT7 (76 pin)
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Input — L channel
Output 1/2VDD D/A converter L channel output terminal.
— —
— — R channel
Output 1/2VDD D/A converter R channel output terminal.
Input —
Input — For quartz
Input Oscillation oscillation
Output Oscillation
— —
Input — For anti
Input — shock mode
Input —
Output L For digital
Output L data output
Output L
Output Clock output 16.9344 MHz 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 sub codes P,A,R,S,T,U and W.
Input — Clock input terminal to read sub code. (When not used, connect to 0 V)
Input —
Input — microcomputer
Input — interface
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.
Input — Power terminal for microcomputer interface.
— — Ground terminal of digital system. Surely connected to 0 V.
Input mode General purpose input/output terminal 6.
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.
Input mode 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
Output Unfixed EFM signal output terminal.
Function
Power terminal for L channel.
Ground terminal for L channel. Surely connected to 0 V.
Ground terminal for R channel. Surely connected to 0 V.
Power terminal for R channel.
Power terminal for quartz oscillation.
Ground terminal of 16.9344 MHz quartz oscillation.
Ground terminal for quartz oscillation. Surely connected to 0 V.
L/R clock input terminal. (When not used, connect to 0 V)
Bit clock input terminal. (When not used, connect to 0 V)
L/R channel data input terminal. (When not used, connect to 0 V)
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.
Data input terminal.
Data output terminal.
Interruption signal output terminal.
Interruption signal output terminal.
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CD-BK100W/CD-BP90W
Controlled with serial data command
from microcomputer. When not used,
set it as the input terminal and
open it by connecting to 0 V, or set it
as the output terminal and open it.