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Registers Format
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25
3.5 A/D Status Register
Address : BASE + 18
Attribute : read only
Data Format:
Bit 1 0
Base
+ 18
DO
VR
DR
DY
Base
+ 19
--- ---
Base
+ 1A
--- ---
Base
+ 1B
--- ---
DOVR: A/D Over-Run ( it is only when A/D is transferred by DMA bus
master mode. )
1 : A/D converted Data is over run
0 : A/D converted Data is in normal condition
DRDY : A/D Data is Ready
1 : A/D conversion is completed
0 : A/D conversion is not completed
3.6 Software Trigger Register
If you want to generate a trigger pulse to the PCI-9112 for A/D conversion,
you just write any data to this register, and then the A/D converter will be
triggered.
Address : BASE + 20
Attribute : write only
Data Format:
Bit
BAS
E+2
0