Sony CDP-CE545 - Compact Disc Player, Service Manual

32

6-10.

IC  PIN  FUNCTION  DESCRIPTION

• BD BOARD  IC101  CXD2587Q

(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, DIGITAL FILTER, D/A CONVERTER)

Pin No.

Pin Name

I/O

Description

1

SQSO

O

Subcode Q data output to the system controller (IC301)

2

SQCK

I

Subcode Q data reading clock signal input from the system controller (IC301)

3

XRST

I

System reset signal input from the system controller (IC301)    “L”: reset

4

SYSM

I

Analog line muting on/off control signal input terminal    “H”: line muting on 
Not used (fixed at  “L”)

5

DATA

I

Command serial data input from the system controller (IC301)

6

XLAT

I

Command latch pulse input from the system controller (IC301)

7

CLOK

I

Command serial data transfer clock signal input from the system controller (IC301)

8

SENS

O

Internal status monitor output to the system controller (IC301)

9

SCLK

I

SENSE serial data reading clock input from the system controller (IC301)

10

VDD

—

Power supply terminal (+5V) (digital system)

11

ATSK

I/O

Input pin for anti-shock    Not used (fixed at  “L”)

12

SPOA

I

Microcomputer escape interface input A terminal    Not used (fixed at  “L”) 

13

SPOB

I

Microcomputer escape interface input B terminal    Not used (fixed at  “L”) 

14

XLON

O

Microcomputer escape interface output to the CXA2568M (IC103)

15

WFCK

O

WFCK output terminal     Not used (open)

16

XUGF

O

Not used (open)

17

XPCK

O

Not used (open)

18

GFS

O

Not used (open)

19

C2PO

O

Not used (open)

20

SCOR

O

Subcode sync (S0+S1) detection signal output to the system controller (IC301)

21

COUT

I/O

Numbers of track counted signal input/output terminal    Not used (open)

22

MIRR

I/O

Mirror signal input/output terminal    Not used (open)

23

DFCT

I/O

Defect signal input/output terminal    Not used (open)

24

FOK

I/O

Focus OK input/output terminal    Not used (open)

25

LOCK

I/O

GFS is sampled by 460 Hz    “H” when GFS is “H”    Not used (open)

26

MDP

O

Spindle motor (M101) servo drive signal output to the BA5974FP (IC102)

27

SSTP

I

Limit in detect switch (S101) input terminal

28

SFDR

O

Sled servo drive PWM signal (+) output to the BA5974FP (IC102)

29

SRDR

O

Sled servo drive PWM signal (–) output to the BA5974FP (IC102)

30

TFDR

O

Tracking servo drive PWM signal (+) output to the BA5974FP (IC102)

31

TRDR

O

Tracking servo drive PWM signal (–) output to the BA5974FP (IC102)

32

FFDR

O

Focus servo drive PWM signal (+) output to the BA5974FP (IC102)

33

FRDR

O

Focus servo drive PWM signal (–) output to the BA5974FP (IC102)

34

VSS

—

Ground terminal (digital system)

35

TEST

I

Input terminal for the test (fixed at “L”)

36

TES1

I

Input terminal for the test (fixed at “L”)

37

XTSL

I

Input terminal for the system clock frequency setting    “L”: 45.1584 MHz, “H”: 22.5792 MHz 
(fixed at “L” in this set)

38

VC

I

Middle point  voltage (+2.5V) input from the CXA2568M (IC103)

39

FE

I

Focus error signal input from the CXA2568M (IC103)

40

SE

I

Sled error signal input from the CXA2568M (IC103)

41

TE

I

Tracking error signal input from the CXA2568M (IC103)

42

CE

I

Command chip enable signal input from the CXA2568M (IC103)