Write operations to this register allow the user to select interrupt sources, enable interrupts, and clear interrupts as well as ADC FIFO flags. The following is a description of the Interrupt/ADC FIFO Register:

INT[1:0] General Interrupt Source selection bits.

 

 

 

 

 

 

 

INT1

 

INT0

 

 

 

Source

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

 

 

 

Not Defined

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

1

 

 

End of Channel Scan

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

0

 

 

AD FIFO Half Full

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

1

 

 

AD FIFO Not Empty

 

 

 

 

 

 

INTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Enables interrupt source selected via the INT[1:0] bits.

 

 

 

 

 

 

 

 

 

 

 

 

1

= Selected interrupt Enabled

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

= Selected interrupt Disabled

 

 

 

 

 

 

 

 

 

 

 

 

EOAIE

 

Enables End-of-Acquisition interrupt. Used during FIFO'd ADC operations to indicate that the

 

 

 

desired sample size has been gathered.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1= Enable EOA interrupt

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

= Disable EOA interrupt

 

 

 

 

 

 

 

 

 

 

 

 

 

EOACL

A write-clear to reset EOA interrupt status.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

= Clear EOA interrupt.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

= No effect.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INTCL

 

A write-clear to reset INT[1:0] selected interrupt status.

 

 

 

 

 

 

 

 

 

 

 

 

1

= Clear INT[1:0] interrupt

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

= No effect.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADFLCL

A write-clear to reset latched ADC FIFO Full status.

 

 

 

 

 

 

 

 

 

 

 

 

1

= Clear ADC FIFO Full latch.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

= No Effect.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: It is not necessary to reset any write-clear bits after they are set.

 

 

 

READ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

14

13

12

 

11

 

10

 

9

 

8

7

 

6

 

5

 

4

3

 

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

 

-

LADFUL

ADNE

ADNEI

 

ADHFI

 

EOBI

 

-

INT

 

EOAI

 

-

 

-

-

 

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read operations to this register allow the user to check status of the selected interrupts and ADC FIFO flags. The following is a description of Interrupt / ADC FIFO Register Read bits:

EOAI

Status bit of ADC FIFO End-of-Acquisition interrupt

 

1

= Indicates an EOA interrupt has been latched.

 

0

= Indicates an EOA interrupt has not occurred.

INT

Status bit of General interrupt selected via INT[1:0] bits. This bit indicates that any one of

 

these interrupts has occurred.

 

1

= Indicates a General interrupt has been latched.

 

0

= Indicates a General interrupt has not occurred.

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Omega Engineering PCI-DAS1200 manual Inte, Eoaie, Eoacl, Intcl, Adflcl