7.3 OPERATIONAL FLOW CHART

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2

3

4

7.3 OPERATIONAL FLOW CHART

-SYSTEM RESET

A

Herdware reset release

1

Initialization of reset release

Test program mode

Pin39=Low

-SYSTEM RESET Low

Pin39=High

No

B

Yes

Hi

Bup,Acc check

 

 

 

Microcomputer dispatch stop

 

 

Acc:Pin15,Bup:Pin16

 

 

 

Power saving mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin16:Low

 

 

 

Pin16:Low

 

 

and

 

 

 

 

and

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

Unit check program start

Pin15:Low

Pin15:Low

 

 

 

Main loop

 

 

 

 

Normal

 

Abnormalities

 

 

 

Bus communication

 

 

C

 

 

OFF

 

 

 

 

 

 

 

 

 

System power on

 

 

 

 

 

ON

 

 

 

 

 

ON

 

OFF

 

 

 

DSPPW on (Pin40:H)

 

DSPPW off (Pin40:L)

 

 

 

 

 

Mute on (Pin42:H)

 

 

DSP initialization failure

 

 

 

 

D

 

DSP Initialization OK

 

Power on commond

No

 

 

 

 

 

 

DSP error

Normal

 

 

 

 

PW lamp on and off

Mute OFF(Pin42:L)

 

DSPPW on (Pin40:H)

 

 

 

 

 

 

 

 

DSP error

Error

 

 

 

 

 

 

 

 

 

Pin51:H

 

 

 

E

 

 

DSP initialization

 

 

 

No

 

 

 

failure

PLD,DSP initialization

 

 

 

 

 

 

 

 

 

 

About 3 seconds

 

 

Pin48=H

Un lock

 

 

 

 

 

 

 

 

 

 

Pin48:H?

 

 

 

 

 

 

 

Mute off (Pin42:L)

 

 

DIT reset

No

 

 

 

 

Pin47=L

 

 

 

 

 

 

 

 

F

Yes

Bup or Acc off

Pin16:Low and Pin15:Low

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

124

RS-A9/EW

 

 

 

2

 

3

4

 

1

 

Page 124
Image 124
Pioneer RS-A9/EW manual Operational Flow Chart, Main loop, Systemreset