PCVisionplus
Hardware Reference
Registers
3–77
Rev 02; February 8, 2002
3.5.9 Interrupt Control (INTENREG) R/W
0
7
0x2C
Reserved
Reserved
Reserved
Reserved
EOFINTEN
AMINTEN
BMINTEN
ACQLINE
8
15
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PCP_INTENREG_32
16
23
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
24
31
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
INTEN
This register enables interrupt requests to the host. All interrupts are ORed together on a single PCI-bus interrupt
line.
Bit
Mnemonic
Function
0
ACQLINEINTEN
Acquire Line Interrupt Enable
1
BMINTEN
Bus Master Complete Interrupt Enable
2
AMINTEN
Acquisition Module Interrupt Enable
3
EOFINTEN
End of Frame Interrupt Enable
4–31
Reserved
“Don’t care”
3.5.9.1 Acquire Line Interrupt Enable (ACQLINEINTEN) R/W
The ACQLINEINTEN bit enables an interrupt that occurs when the acquire operation writes to the line address
equal to the contents of the ALINEINT register for a memory frame. The interrupt gets latched in the BMC Interrupt
Status register INTSTAT for arbitration and processing.
ACQLINEINTEN
Function
0
Disable acquire line interrupt
1
Enable acquire line interrupt
3.5.9.2 Bus Master Complete Interrupt Enable (BMINTEN) R/W
The BMINTEN bit enables an interrupt that occurs when a bus master operation from memory completes. The inter-
rupt gets latched in the BMC Interrupt Status register INTSTAT for arbitration and processing.
BMINTEN
Function
0
Disable bus master coomplete interrupt
1
Enable bus master complete interrupt
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