EP80579 Datasheet, PDF (544/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
Table 16-165.Offset 3Eh: BCTRL - Bridge Control Register (Sheet 2 of 2)
Description:
View: PCI 1
BAR: Configuration
Bus:Device:Function: 0:2:0
Offset Start: 3Eh
Offset End: 3Eh
View: PCI 2
BAR: Configuration
Bus:Device:Function: 0:3:0
Offset Start: 3Eh
Offset End: 3Eh
Size: 8 bit
Default: 00h
Power Well: Core
Bit Range
03
02
01
00
Bit Acronym
Bit Description
Sticky
VGAEN
ISAEN
2SERRE
2PERRE
VGA Enable: Controls the routing of processor initiated
transactions targeting VGA compatible I/O and memory
address ranges.
0 = Disable
1 = Enable
Note: Only one of Device 2–3’s VGAEN bits are allowed
to be set. This must be enforced via software.
ISA Enable: Modifies the response by the IMCH to an I/O
access issued by the processor that target ISA I/O
addresses. This applies only to I/O addresses that are
enabled by the IOBASE and IOLIMIT registers.
0 = All addresses defined by the IOBASE and IOLIMIT for
processor I/O transactions are mapped to PCI
Express*.
1 = IMCH does not forward to PCI Express* any I/O
transactions addressing the last 768 bytes in each 1
Kbyte block even if the addresses are within the range
defined by the IOBASE and IOLIMIT registers.
Instead, these cycles are forwarded to NSI where they
can be subtractively or positively claimed by the ISA
bridge.
SERR Enable: This bit enables or disables forwarding of
ERR_COR, ERR_NONFATAL, and ERR_FATAL messages
from PCI Express* to NSI, where they can be converted
into interrupts that are eventually delivered to the
processor.
0 = Disable
1 = Enable
Parity Error Response Enable: Controls response to
poisoned TLPs on PCI Express*.
0 = Disable
1 = Enable
Bit Reset
Value
0b
0b
0b
0b
Bit Access
RW
RW
RW
RW
16.4.1.27 Offset 44h: VSCMD0 - Vendor Specific Command Byte 0 Register
This register is for vendor specific commands.
Hot Plug is not supported.
Note:
It appears as a reserved register, except for Device 2 which implement this Hot Plug
specific register.
Intel^® EP80579 Integrated Processor Product Line Datasheet
544
August 2009
Order Number: 320066-003US