Intel AT80612002931AB Datový list Strana 181

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Intel
®
Xeon
®
Processor C5500/C3500 Series
February 2010 Datasheet, Volume 1
Order Number: 323103-001 181
PCI Express Non-Transparent Bridge
3.19.2.7 CLSR: Cacheline Size Register
3.19.2.8 PLAT: Primary Latency Timer
This register denotes the maximum time slice for a burst transaction in legacy PCI 2.3
on the primary interface. It does not affect/influence PCI-Express functionality.
3.19.2.9 HDR: Header Type Register (Dev#3, PCIe NTB Pri Mode)
This register identifies the header layout of the configuration space.
Register:CLSR
Bus:0
Device:3
Function:0
Offset:0Ch
Bit Attr Default Description
7:0 RW 0h
Cacheline Size
This register is set as RW for compatibility reasons only. Cacheline size for IIO
is always 64B. IIO hardware ignore this setting.
Register:PLAT
Bus:0
Device:3
Function:0
Offset:0Dh
Bit Attr Default Description
7:0 RO 0h
Prim_Lat_timer: Primary Latency Timer
Not applicable to PCI-Express. Hardwired to 00h.
Register:HDR
Bus:0
Device:3
Function:0
Offset:0Eh
PCIE_ONLY
Bit Attr Default Description
7RO 0
Multi-function Device
This bit defaults to 0 for PCI Express NTB port.
6:0 RO 00h
Configuration Layout
This field identifies the format of the configuration header layout. It is Type0 for
PCI Express NTB port.
The default is 00h, indicating a “non-bridge function”.
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