Sharp CD-BA3000 Manuel de service télécharger pdf (Page 43)

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CD-BA3000

IC2 VHiLC78641E-1: Servo/Signal Control (LC78641E) (2/2)

44 LVDD ––L channel Power terminal for L channel.

45 LCHO Output 1/2VDD D/A converter L channel output terminal.

46 LVSS –– Ground terminal for L channel. Surely connected to 0V.

47 RVSS ––R channel Ground terminal for R channel. Surely connected to 0V.

48 RCHO Output 1/2VDD D/A converter R channel output terminal.

49 RVDD –– Power terminal for R channel.

50 XVDD ––For quartz Power terminal for quartz oscillation.

51 XIN Input Oscillation oscillation Ground terminal of 16.9344MHz quartz oscillation.

52 XOUT Output Oscillation

53 XVSS –– Ground terminal for quartz oscillation. Surely connected to 0V.

54 ASLRCK Input – For anti L/R clock input terminal. (When not used,connect to 0V)

55 ASDACK Input – shock mode Bit clock input terminal. (When not used,connect to 0V)

56 ASDFIN Input – L/R channel data input terminal. (When not used,connect to 0V)

57* LRSY Output L For digital L/R clock output terminal.

58* DATACK Output L data output Bit clock output terminal.

59* DATA Output L L/R channel data output terminal.

60* 16M Output Clock output 16.9344MHz output terminal.

61* SFSY Output L Output terminal of synchronous signal of subcode frame.

It drops when subcode stand by.

62* SBSY Output L Output terminal of synchronous signal of subcode block.

63* PW Output L Output terminal of subcodes P,A,R,S,T,U and W.

64 SBCK Input – Clock input terminal to read subcode. (When not used,connect to 0V)

65 CE Input – For Chip enable signal input terminal.

66 CL Input –

microcomputer

Data transmission clock input terminal.

67 DI Input – interface Data input terminal.

68 DO Output L Data output terminal.

69 INT Output H Interruption signal output terminal.

70 WRQ Output H Interruption signal output terminal.

71 RES Input – Reset input terminal of LC78640. When turning on power, set it at "L".

72 DRF Output L Focus ON detection terminal.

73 VDD5V ––Power terminal for microcomputer interface.

74 VSS ––Ground terminal of digital system. Surely connected to 0V.

75 CONT6 In/Output Input mode General purpose input/output terminal 6.

Controlled with serial data command

from microcomputer

When not used,

76 CONT7 In/Output Input mode General purpose input/output terminal 7.

set it as the input terminal

and

open it by connecting

to 0V, or set it

as the output terminal and open it.

77* V/ *P Output H Monitor output terminal for automatic switch of rough servo/phase control.

"H" for rough servo, and "L" for phase servo.

78* FSEQ Output L

Output terminal synchronous signal detection. "H" is output when synchronous

signal

detected by EFM signal matches synchronous signal

internally generated.

79* DEFECT In/Output 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

80* EFMO Output Unfixed

EFM signal output terminal.

Pin No.

Function

Terminal Name

Input/Output

Setting in Reset

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)

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 59 60

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Sharp CD-BA3000 Manuel de service Page 43

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