Sony BKDS-2530, Operation Manual

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2(E)
A
1
2
3
4
B C D E F
Location and Function of Parts
CPU-252
Front
1
Connector CN5 (9-pin, RS-232C, female)
Used to load firmware on the flash ROM.
2
Switch S3
Resets the processor.
3
Switch S1
Abort switch, used in firmware development.
4
Connector CN3 (16-pin, parallel I/O)
Used to load firmware on the flash ROM for
debugging.
5
Indicator D2
Lights when the processor stops due to some
malfunction.
6
Test pin TP2
Used to check the processor clock signal.
7
Test pin TP4, TP5
Used to check the processor timer output.
8
Test pin TP3
Used to check the input reference signal.
9
Test pin TP1
Used to check the signal to reset the processor. The
output level of this pin will be low when Switch S3
2
is pressed or the PC is powered up.
0
Indicator D4
Lights when the processor stops due to some
malfunction.
!¡
Indicator D3
Lights when the processor receives a reset signal.
!™
Test pin TP8
Unused (reserved for checking the processor I/O port
outputs).
1
Connector CN5
2
Switch S3
3
Switch S1
4
Connector CN3
5
Indicator D2
6
Test pin TP2
7
Test pins TP4 and TP5
8
Test pin TP3
9
Test pin TP1
0
Indicator D4
!¡
Indicator D3
!™
Test pin TP8
!£
Test pin TP6
!¢
Test pin TP7