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): 132/145頁
文件大?。?/td> 2285K
代理商: MT8LLN22NCNE
Coppertail Product Specification
MT8LLN22NCNE.fm – Rev. 1, Pub. 2/02
87
2002, Micron Technology Inc.
PRELIMINARY
MT8LLN22NCNE
COPPERTAIL
Processor Interface I/O Register Set
The processor interface I/O registers includes a
number of control registers necessary for compatibil-
ity. Table 13 summarizes the processor interface I/O
register set.
NMI Status and Control Register
Fast A20 and INIT Register
Table 13
Processor Interface I/O Register Set
ADDRESS
ALIAS
REGISTER
0061h
0063h,
0065h,
0067h
NMI Status and Control
0070h
0072h,
0074h,
0076h
NMI Enable
0092h
Port 92
00F0h
Co-Processor Error
0CF9h
Reset control
ADDRESS: 61h
SYMBOL: NMI_SC
BITS
DESCRIPTION
PROPERTIES
RESET
7
P_SERR# NMI Source Status. Set on any P_SERR# pulse when enabled by
bit 2. Cleared when bit 2 is set.
R/O
0
6
IOCHK# NMI Source Status. Set when IOCHK# is asserted via L_SERIRQ
when enabled by bit 3. Cleared when bit 3 is set.
R/O
0
5
Timer Counter 2 OUT Status.
R/O
0
4
Refresh Cycle Toggle. Toggles at a rate that is equivalent to when each
transition of the refresh would occur.
R/O
0
3
IOCHK# NMI Enable. When set, NMI generated by IOCHK# is disabled,
and bit 6 cleared. When clear, NMI generated by IOCHK# is enabled.
R/W
0
2
SERR# NMI Enable. When set, NMI generated by P_SERR# is disabled, and
bit 7 cleared. When clear, NMI generated by P_SERR# is enabled.
R/W
0
1
Speaker Data Enable. When set, the speaker output is equivalent to the
Counter 2 OUT value. When clear, speaker output is zero.
R/W
0
Timer Counter 2 Enable. When set, Timer Counter 2 is enabled. When
clear, Timer Counter 2 is disabled.
R/W
0
ADDRESS: 92h
SYMBOL: PORT92
BITS
DESCRIPTION
PROPERTIES
RESET
7:2
Reserved
R/W
0
1
Fast A20 enable. H_A20M# output tracks this bit along with A20GATE
and USB A20.
R/W
0
Fast INIT enable. When this bit transitions from 0 to 1, H_INIT# will be
forced active for 16 PCI clocks.
R/W
0
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