Register Description
40
Datasheet
2.5.8
PCISTS - PCI Status Register
The PCI Status register is a 16-bit status register that reports the occurrence of various
error events on this device's PCI interface.
Device:
0
Function:
0-1
Offset:
06h
Device:
2
Function:
0-1, 4-5
Offset:
06h
Device:
3
Function:
0-2, 4
Offset:
06h
Device:
4-6
Function:
0-3
Offset:
06h
Bit
Type
Reset
Value
Description
15
RO
0
Detect Parity Error (DPE)
The host bridge does not implement this bit and is hardwired to a 0.
14
RO
0
Signaled System Error (SSE)
This bit is set to 1 when this device generates an SERR message over the bus
for any enabled error condition. If the host bridge does not signal errors using
this bit, this bit is hardwired to a 0 and is read only.
13
RO
0
Received Master Abort Status (RMAS)
This bit is set when this device generates request that receives an Unsupported
Request completion packet. Software clears the bit by writing 1 to it.
If this device does not receive Unsupported Request completion packets, the bit
is hardwired to 0 and is read only.
12
RO
0
Received Target Abort Status (RTAS)
This bit is set when this device generates a request that receives a Completer
Abort completion packet. Software clears this bit by writing a 1 to it.
If this device does not receive Completer Abort completion packets, this bit is
hardwired to 0 and read only.
11
RO
0
Signaled Target Abort Status (STAS)
This device will not generate a Target Abort completion or Special Cycle. This bit
is not implemented in this device and is hardwired to a 0.
10:9
RO
0
DEVSEL Timing (DEVT)
These bits are hardwired to 00. This device does not physically connect to PCI
bus X. These bits are set to “00” (fast decode) so that optimum DEVSEL timing
for PCI bus X is not limited by this device.
8
RO
0
Master Data Parity Error Detected (DPD)
PERR signaling and messaging are not implemented by this bridge, therefore
this bit is hardwired to 0.
7
RO
1
Fast Back-to-Back (FB2B)
This bit is hardwired to 1. This device is not physically connected to a PCI bus.
This bit is set to 1 (indicating back-to-back capabilities) so that the optimum
setting for this PCI bus is not limited by this device.
6
RO
0
Reserved
5
RO
0
66 MHz Capable
Does not apply to PCI Express. Hardwired to 0.
Содержание BX80605I7870 - Core i7 2.93 GHz Processor
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