Intel 925 Data Sheet - Page 137

DSTS-Device Status D1:F0

Page 137 highlights

Host-PCI Express* Graphics Bridge Registers (D1:F0) R 8.1.35 DSTS-Device Status (D1:F0) PCI Device: Address Offset: Default Value: Access: Size: 1 AAh 0000h RO 16 bits This register reflects status corresponding to controls in the Device Control register. Note: The error reporting bits are in reference to errors detected by this device, not errors messages received across the link. Bit Access & Default Description 15:6 Reserved 5 RO Transactions Pending 0b 0 = All pending transactions (including completions for any outstanding non- posted requests on any used virtual channel) have been completed. 1 = Device has transaction(s) pending (including completions for any outstanding non-posted requests for all used Traffic Classes). 4 Reserved 3 R/WC Unsupported Request Detected: 0b 1 = Device received an Unsupported Request. Errors are logged in this register regardless of whether error reporting is enabled or not in the Device Control Register. 2 R/WC Fatal Error Detected: 0b 1 = Fatal error(s) were detected. Errors are logged in this register regardless of whether error reporting is enabled or not in the Device Control register. 1 R/WC Non-Fatal Error Detected: 0b 1 = Non-fatal error(s) were detected. Errors are logged in this register regardless of whether error reporting is enabled or not in the Device Control register. 0 R/WC Correctable Error Detected: 0b 1 = Correctable error(s) were detected. Errors are logged in this register regardless of whether error reporting is enabled or not in the Device Control register. Note: The MCH may report a false 8B/10B Receiver Error when exiting L0s. This is reported thru the Correctable Error Detected bit CESTS device 1, offset 1D0h, Bit [0]. This will reduce the value of Receiver Error detection when L0s is enabled. Disable L0s for accurate Receiver Error reporting. Intel® 82925X/82925XE MCH Datasheet 137

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Host-PCI Express* Graphics Bridge Registers (D1:F0)
R
Intel
®
82925X/82925XE MCH Datasheet
137
8.1.35
DSTS—Device Status (D1:F0)
PCI Device:
1
Address Offset:
AAh
Default Value:
0000h
Access:
RO
Size:
16 bits
This register reflects status corresponding to controls in the Device Control register.
Note:
The error reporting bits are in reference to errors detected by this device, not errors messages
received across the link.
Bit
Access &
Default
Description
15:6
Reserved
5
RO
0b
Transactions Pending
0 =
All pending transactions (including completions for any outstanding non-
posted requests on any used virtual channel) have been completed.
1 =
Device has transaction(s) pending (including completions for any outstanding
non-posted requests for all used Traffic Classes).
4
Reserved
3
R/WC
0b
Unsupported Request Detected:
1 =
Device received an Unsupported Request. Errors are logged in this register
regardless of whether error reporting is enabled or not in the Device Control
Register.
2
R/WC
0b
Fatal Error Detected:
1 =
Fatal error(s) were detected. Errors are logged in this register regardless of
whether error reporting is enabled or not in the Device Control register.
1
R/WC
0b
Non-Fatal Error Detected:
1 =
Non-fatal error(s) were detected. Errors are logged in this register regardless
of whether error reporting is enabled or not in the Device Control register.
0
R/WC
0b
Correctable Error Detected:
1 =
Correctable error(s) were detected. Errors are logged in this register
regardless of whether error reporting is enabled or not in the Device Control
register.
Note:
The MCH may report a false 8B/10B Receiver Error when exiting L0s.
This
is reported thru the Correctable Error Detected bit CESTS device 1, offset 1D0h,
Bit [0]. This will reduce the value of Receiver Error detection when L0s is enabled.
Disable L0s for accurate Receiver Error reporting.