Registers
PCVisionplus
Hardware Reference
3–9
Rev 02; February 8, 2002
3.1.4 PCI Status (PCISTAT) R/W1C
0
7
Address offset 0x6
1
0
0
0
0
0
0
0
8
15
DPARE
SSERR
RMABT
RTABT
STABT
0
0
DTPAR
PCISTAT
This register contains PCI status information generated and received by the PCVisionplus. All bits defined as 0 or 1
are reserved read-only bits. All others contain status information and are read/write-one-clear (this means if a bit is
read as set, to clear it the bit must be written to one). Writing a status bit that is set to zero will have no effect.
Bit
Mnemonic
Function
0–6
Reserved
Must be zero
7
Reserved
Must be one
8
DTPAR
Data Parity Error Reported
9–10
Reserved
Must be zero
11
STABT
Signaled Target Abort
12
RTABT
Received Target Abort
13
RMABT
Received Master Abort
14
SSERR
Signaled System Error
15
DPARE
Detected Parity Error
3.1.4.1 Data Parity Reported (DTPAR) R/W1C
The DTPAR bit is set (1) whenever a data parity error is detected for transfers involving the PCVisionplus. The Parity
Error Enable bit (PAREN in PCICMD register) must be set (1) in order for this bit to be set. This bit is cleared by
writing it to one (1), or by the assertion of the PCI #RESET signal.
DTPAR
Function
0
No data parity reported
1
Data parity reported
3.1.4.2 Signaled Target Abort (STABT) R/W1C
This bit is set whenever the PCVisionplus aborts a cycle when addressed as a target. This bit is cleared by writing it to
one (1).
STABT
Function
0
No target abort
1
Generated target abort
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