59

IC202 to IC601 Communications

Signal

Active

Signal Present when

 

 

 

Chip Select (CS1 or CS4)

Low

IC202 & IC205 gets Vcc

 

 

 

Clock IC202/pin 5

Low

IC202 gets B+

 

 

 

Write IC202/pin 22

Low

IC202 & IC205 gets Vcc

 

 

 

Six Address lines HA 0-5

 

IC202 gets B+

 

 

 

16 Data lines HD 0-15

 

IC202 gets B+

 

 

 

When IC601 wants to send reply data to IC202, an interrupt signal is sent to IC202. When IC202 is ready, it will send chip select, clock, read pulses and address to support the data received from IC601.

IC601 to IC202 Communications

Signal

Active

Signal Present when

 

 

 

Interrupt (INT1 or INT3)

Low

An operation is completed

 

 

(e.g. sled moved)

 

 

 

Chip Select (CS1 or CS4)

Low

IC202 and IC205 gets Vcc

 

 

 

Clock IC202/pin 5

Low

IC202 gets B+

 

 

 

Read IC202/pin 24

Low

IC202 and IC205 gets Vcc

 

 

 

Six Address lines HA 0-5

 

IC202 gets B+

 

 

 

16 Data lines HD 0-15

 

IC202 gets B+

 

 

 

HGA IC601 to Servo IC701

Bi-directional communications between these two ICs is similar to that described for IC202 and IC601. The differences are in the IC pin num- bers and that IC601-IC701 communications are only taking place when a servo command is changed.

IC601 to IC701 Communications

 

 

Signal

 

 

 

Active

 

Signal Present when

 

 

 

 

 

 

 

 

 

 

 

Chip Select (SDCPS

 

Low

 

Power on/off, Tray in/out,

 

 

IC601/pin 118)

 

 

 

 

 

 

disc playback

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clock Input IC701/pin 108

 

Low

 

3.3V is present

 

 

 

 

 

 

 

 

 

 

 

 

Write (SDPWR IC601/pin

 

Low

 

Power on/off, Tray in/out,

 

 

116)

 

 

 

 

 

 

 

 

disc playback

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Two Address lines HA 0-1

 

 

 

 

IC202 gets Vcc

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 Data lines HD 0-7

 

 

 

 

 

 

IC202 gets Vcc

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC701 to IC601 Communications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal

 

 

Active

 

 

Signal Present when

 

 

 

 

 

 

 

 

 

 

 

Interrupt (HINT

from

 

Low

 

An operation

is completed

 

 

IC701/pin 128)

 

 

 

 

 

 

(e.g. sled moved)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Chip

Select

(SDCPS

 

Low

 

Power on/off,

Tray

in/out,

 

 

from IC601/pin 118)

 

 

 

 

 

disc playback

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clock

Input

IC701/pin

 

Low

 

3.3V is present

 

 

 

 

108

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read

from

IC601/pin

 

Low

 

Power on/off,

Tray

in/out,

 

 

117

 

 

 

 

 

 

 

disc playback

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Two

Address

lines

HA

 

 

 

 

IC202 gets Vcc

 

 

 

 

0-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 Data lines HD 0-7

 

 

 

 

 

IC202 gets Vcc

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 64
Image 64
Sony S530D manual HGA IC601 to Servo IC701, Sdcps