參數(shù)資料
型號(hào): GL9701-MXG
廠商: Genesys Logic, Inc.
英文描述: PCI ExpressTM to PCI Bridge
中文描述: 的PCI ExpressTM到PCI橋
文件頁(yè)數(shù): 46/75頁(yè)
文件大?。?/td> 1077K
代理商: GL9701-MXG
GL9701 PCI Express
TM
to PCI Bridge
2000-2006 Genesys Logic Inc. - All rights reserved.
Page 46
(addresses defined above) unless they are enabled for
forwarding by the defined I/O and memory address
ranges.
1
Forward VGA compatible memory and I/O addresses
(addresses defined above) from the primary interface to
the secondary interface (if the I/O Enable and Memory
Enable bits are set) independent of the I/O and memory
address ranges and independent of the ISA Enable bit.
4
RW
0b
VGA 16-bit Decode
This bit enables the bridge to provide 16-bit
decoding of VGA I/O address precluding the
decoding of alias addresses every 1 KB. This bit only has
meaning if the VGA Enable bit in this register is also set to 1,
enabling VGA I/O decoding and forwarding by the bridge.
0
Execute 10-bit address decodes on VGA I/O
accesses.
1
Execute 16-bit address decodes on VGA I/O
accesses.
5
RW
0b
Master-Abort Mode
Controls the behavior of a bridge when it
receives a Master-Abort termination (e.g., an Unsupported Request
on PCI Express) on either interface.
0
Do not report Master-Aborts. When a UR response is
received from PCI Express for non-posted transactions,
and when the secondary side is operating in conventional
PCI mode, return FFFF FFFFh on reads and complete I/O
writes normally. When a Master-Abort is received on the
secondary interface for posted transactions initiated from
the primary interface, no action is taken (i.e., all data is
discarded).
1
Report UR Completions from PCI Express by signaling
Target-Abort on the secondary interface when the
secondary interface is operating in conventional PCI
mode. For posted transactions initiated from the primary
interface and Master-Aborted on the secondary interface,
the bridge must return an ERR_NONFATAL (by default)
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