Intel D425 AU80610006252AA User Manual
Product codes
AU80610006252AA
Processor Configuration Registers
Datasheet
135
1.10.4
PCISTS2 - PCI Status
B/D/F/Type: 0/2/1/PCI
Address Offset:
6-7h
Default Value:
0090h
Access:
RO;
Size: 16
bits
PCISTS is a 16-bit status register that reports the occurrence of a PCI compliant
master abort and PCI compliant target abort. PCISTS also indicates the DEVSEL#
timing that has been set by the IGD.
master abort and PCI compliant target abort. PCISTS also indicates the DEVSEL#
timing that has been set by the IGD.
Bit Access Default
Value
Description
15 RO 0b
Detected Parity Error (DPE):
Since the IGD does not detect parity, this bit is
always hardwired to 0.
Since the IGD does not detect parity, this bit is
always hardwired to 0.
14 RO 0b
Signaled System Error (SSE):
The IGD never asserts SERR#, therefore this bit
is hardwired to 0.
The IGD never asserts SERR#, therefore this bit
is hardwired to 0.
13 RO 0b
Received Master Abort Status (RMAS):
The IGD never gets a Master Abort, therefore
this bit is hardwired to 0.
The IGD never gets a Master Abort, therefore
this bit is hardwired to 0.
12 RO 0b
Received Target Abort Status (RTAS):
The IGD never gets a Target Abort, therefore
this bit is hardwired to 0.
The IGD never gets a Target Abort, therefore
this bit is hardwired to 0.
11 RO 0b
Signaled Target Abort Status (STAS):
Hardwired to 0. The IGD does not use target
abort semantics.
Hardwired to 0. The IGD does not use target
abort semantics.
10:9 RO 00b
DEVSEL Timing (DEVT):
N/A. These bits are hardwired to "00".
N/A. These bits are hardwired to "00".
8 RO 0b
Master Data Parity Error Detected (DPD):
Since Parity Error Response is hardwired to
disabled (and the IGD does not do any parity
detection), this bit is hardwired to 0.
Since Parity Error Response is hardwired to
disabled (and the IGD does not do any parity
detection), this bit is hardwired to 0.
7 RO 1b
Fast Back-to-Back (FB2B):
Hardwired to 1. The IGD accepts fast back-to-
back when the transactions are not to the same
agent.
Hardwired to 1. The IGD accepts fast back-to-
back when the transactions are not to the same
agent.
6 RO 0b
User Defined Format (UDF):
Hardwired to 0.
Hardwired to 0.
5 RO 0b
66 MHz PCI Capable (66C):
N/A - Hardwired to 0.
N/A - Hardwired to 0.
4 RO 1b
Capability List (CLIST):
This bit is set to 1 to indicate that the register
This bit is set to 1 to indicate that the register