參數(shù)資料
型號: MT8LLN22NCNE
元件分類: 總線控制器
英文描述: PCI BUS CONTROLLER, PBGA316
封裝: 27 X 27 MM, PLASTIC, BGA-316
文件頁數(shù): 125/145頁
文件大?。?/td> 2285K
代理商: MT8LLN22NCNE
Coppertail Product Specification
MT8LLN22NCNE.fm – Rev. 1, Pub. 2/02
80
2002, Micron Technology Inc.
PRELIMINARY
MT8LLN22NCNE
COPPERTAIL
Initialization Command Word 1 Register
NOTE:
ICW1 starts the initialization sequence during which the following automatically occur:
The Interrupt Mask register is cleared.
IRQ7 input is assigned priority 7.
The slave mode address is set to 7.
Special Mask Mode is cleared and Status Read is set to IRR.
Operational Control Word 2 Register
ADDRESS: 20h
SYMBOL: ICW1
ADDRESS: A0h
MASTER CONTROLLER
SLAVE CONTROLLER
BITS
DESCRIPTION
PROPERTIES
RESET
7:5
Reserved. Should be programmed to 000
R/O
0
4
ICW select. This bit must be set to ICW1 start initialization sequence.
When set, the initialization sequence is ICW1, ICW2, ICW3, and ICW4.
When clear, the initialization sequence is OCW2, OCW3.
W/O
0
3:1
Reserved. Should be programmed to 000.
R/O
0
ICW4 write requirement. This bit should always be set.
W/O
0
ADDRESS: 20h
SYMBOL: OCW2
ADDRESS: A0h
MASTER CONTROLLER
SLAVE CONTROLLER
BITS
DESCRIPTION
PROPERTIES
RESET
7:5
Rotate and EOI Subcommand
000: Rotate in Auto EOI Mode (Clear)
001: Non-specific EOI Command
010: No Operation
011: Specific EOI Command
100: Rotate in Auto EOI Mode (Set)
101: Rotate on Non-Specific EOI Command
110: Set Priority Command (use bits 2:0)
111: Rotate on Specific EOI Command (use bits 2:0)
W/O
001
4:3
OCW2 select. This field must be 00 to select OCW2.
W/O
0
2:0
Interrupt Priority Level.
For set priority, and rotate on specific EOI commands:
000: IRQ0/8 low, IRQ1/9 high
001: IRQ1/9 low, IRQ2/10 high
010: IRQ2/10 low, IRQ3/11 high
011: IRQ3/11 low, IRQ4/12 high
100: IRQ4/12 low, IRQ5/13 high
101: IRQ5/13 low, IRQ6/14 high
110: IRQ6/14 low, IRQ7/15 high
111: IRQ7/15 low, IRQ0/8 high
For specific EOI command:
Reset In-Service bit (7:0)
W/O
0
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