LC78621E Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LC78621E

Compact Disc Player DSP

SANYO -> Panasonic 

LC78621E

Pin Functions

Pin No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

Symbol

DEFI

TAI

PDO

VVSS

ISET

VVDD

FR

VSS

EFMO

EFMO

EFMIN

TEST2

CLV+

CLV–

V/P

FOCS

FST

FZD

HFL

TES

PCK

FSEQ

TOFF

TGL

THLD

TEST3

VDD

JP+

29

JP–

30

DEMO

31

TEST4

32

EMPH

33

LRCKO

34

DFORO

35

DFOLO

36

DACKO

37

TST10

38

ASDACK

39

ASDFIN

40

ASDFIR

41

ASLRCK

I/O

Function

I Defect detection signal (DEF) input (Must be tied low if unused.)

I

Test input. A pull-down resistor is built in.

O

External VCO control phase comparator output

PLL pins

AI

Internal VCO ground. Normally 0 V.

PDO output current adjustment resistor connection

Internal VCO power supply.

AI

VCO frequency range adjustment

Digital system ground. Normally 0 V.

O

EFM signal inverted output

O Slice level control

EFM signal output

I

EFM signal input

I Test input. A pull-down resistor is built in.

O Spindle servo control output. Acceleration when CLV+ is high, deceleration when CLV– is high

O Three-value output is also possible when specified by microprocessor command.

Rough servo/phase control automatic switching monitor output. Outputs a high level during rough servo and a low level

O during phase control.

O Focus servo on/off output. Focus servo is on when the output is low.

O Focus start pulse output. This is an open-drain output.

I Focus error zero cross signal input. (Must be tied low if unused.)

I Track detection signal input. This is a Schmitt input.

I Tracking error signal input. This is a Schmitt input.

O EFM data playback clock monitor. Outputs 4.3218 MHz when the phase is locked.

Synchronization signal detection output. Outputs a high level when the synchronization signal detected from the EFM

O signal and the internally generated synchronization signal agree.

O Tracking off output

O Tracking gain switching output. Increase the gain when low.

O Tracking hold output

I Test input. A pull-down resistor is built in.

Digital system power supply.

O Track jump output. A high level output from JP+ indicates acceleration during an outward jump or deceleration during an

inward jump.

A high level output from JP– indicates acceleration during an inward jump or deceleration during an outward jump.

O Three-value output is also possible when specified by microprocessor command.

I Sound output function input used for end product adjustment manufacturing steps. A pull-down resistor is built in.

I Test input. A pull-down resistor is built in.

O De-emphasis monitor pin. A high level indicates playback of a de-emphasis disk.

O

Word clock output

O

Digital filter outputs

O

Right channel data output

Left channel data output

O

Bit clock output

O Test output. Leave open. (Normally outputs a low level.)

I

Bit clock input

I Anti-shock system inputs Left/right channel data input

I (Must be tied low if unused.) Test input. (Should be tied low for normal operation.)

I

Word clock input

Continued on next page.

No. 5223-7/34

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