參數(shù)資料
型號: LSIFC909
英文描述: LSIFC909 Fibre Channel I/O Processor technical manual v2.1 8/00
中文描述: LSIFC909光纖通道I / O處理器技術手冊2.1 8 / 00
文件頁數(shù): 72/144頁
文件大小: 1496K
代理商: LSIFC909
5-16
Registers
Register: 0x1C
Mem1 Base Address Low
Read/Write
Mem1BAddL Mem0 Base Address Low (Read/Write)
Indicates the lower 32 bits of the 64-bit memory address
width, and the location of memory required by the device.
Its size is programmable from 16 Kbytes (2
14
) through
512 Kbytes (2
19
) bytes in steps of powers of 2. The
default value indicated is 64 Kbytes, unless firmware
programs a different value prior to PCI configuration, or if
programmed with the serial EPROM.
[31:4]
Prefetch
Prefetchable Memory Block
With this bit set, there are no side effects to prefetching.
For reads, all bytes can be sent regardless of the state of
the byte enables. For writes, sequential writes can be
combined into a burst.
3
Type
Location of Memory
With bit 2 = 1 and bit 1 = 0, the user can map this device
anywhere in the 64-bit space.
[2:1]
IOMemSp
I/O or Memory Space Indicator (Read Only)
This bit is set to 0 to indicate Memory Space mapping.
0
31
16
Mem1BAddL (Most Significant)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
4
3
2
1
0
Mem1BAddL (Least Significant)
Prefetch
Type
IOMemSp
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
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