Intel 41210 User Manual
78
Intel
®
41210 Serial to Parallel PCI Bridge Developer’s Manual
Register Description
12.2.1
Offset 00h: ID—Identifiers
Contains the vendor and device identifiers for software.
12.2.2
Offset 04h: PCICMD—Command Register
This register controls how the device behaves on the primary interface (PCI Express*). As this
component is a bridge, additional command information is located in a separate Bridge Control
register (
component is a bridge, additional command information is located in a separate Bridge Control
register (
).
Table 35.
Offset 00h: ID—Identifiers
Bits
Type
Reset
Description
31:16
RO
A
B
Device ID (DID):
These bits indicate the device number assigned by Intel to the Intel
®
41210 Serial to Parallel PCI Bridge.
0340h
0341h
15:0
RO
8086h
Vendor ID (VID):
This 16-bit field indicates that Intel is the vendor.
Table 36.
Offset 04h: PCICMD—Command Register (Sheet 1 of 2)
Bits
Type
Reset
Description
15:11
RO
00h
Reserved
10
RW
0b
INTx Mask:
The bridge does not generate internal interrupts. The value of this bit has no
meaning.
9
RO
0b
Fast Back-to-back enable (FBE):
This bit has no meaning on PCI Express*.
This bit must be hard-wired to 0.
8
RW
0b
SERR# Enable (SEE):
This bit enables reporting of non-fatal and fatal errors to the root
complex.
0 = Disable reporting errors
1 = Enable reporting of non-fatal and fatal errors to the root complex
NOTE:
Errors are reported when enabled either through this bit or through the PCI
Express*-specific bits in the Device Control Register (
Express*-specific bits in the Device Control Register (
).
7
RO
0b
Wait Cycle Control (WCC):
Reserved
6
RW
0b
Parity Error Response Enable (PERE):
This bit controls the setting of the master data
parity error bit in the Status Register (
) in response to a parity error received on the PCI Express* interface (poisoned
TLP) or peer PCI interface.
0 = The 41210 ignores these errors on the PCI Express*/peer-PCI interface.
1 = The 41210 reports read completion data parity errors on PCI Express* and sets the
MDPD bit in the status register.
5
RO
0b
VGA Palette Snoop Enable (VGA_PSE):
Reserved
4
RO
0b
Memory Write and Invalidate Enable (MWIE):
Memory write and invalidate transactions
are not generated, since PCI Express* does not have a corresponding transfer type.
3
RO
0b
Special Cycle Enable (SCE):
Reserved