參數(shù)資料
型號: AMD-640
廠商: Advanced Micro Devices, Inc.
英文描述: 64-Bit Socket 7 Interface, Integrated Write back Cache Controller, System Memory Controller, and PCI Bus Controller.(64位系統(tǒng)控制器(包括高速緩沖存儲器控制器,系統(tǒng)存儲器控制器和PCI總線控制器))
中文描述: 64位Socket 7的接口,集成寫回高速緩沖存儲器控制器,系統(tǒng)內(nèi)存控制器和PCI總線控制器。(64位系統(tǒng)控制器(包括高速緩沖存儲器控制器,系統(tǒng)存儲器控制器和的PCI總線控制器))
文件頁數(shù): 134/159頁
文件大?。?/td> 1900K
代理商: AMD-640
Configuration Registers
7-37
21090C/0—June 1997
AMD-640 System Controller Data Sheet
Preliminary Information
Bit 7
Local Memory Decoding (RW)
—This bit must be set if fast back-to-back cycles
are selected in either register 04h-05h or register 71h
.
0=Fast (address phase) (default)
1=Slow (first data phase)
PCI Target 1 Wait State Read (RW)
0=Zero wait state TRDY# response (default)
1=One wait state TRDY# response
PCI Target 1 Wait State Write (RW)
0=Zero wait state TRDY# response (default)
1=One wait state TRDY# response
Reserved (always reads 0)
Assert STOP# After Write Timeout (RW)
—Enabling this feature allows the
AMD-640 system controller to signal a retry to the initiator by asserting
STOP#. This is the recommended setting.
0=Disabled (default)
1=Enabled (recommended)
Assert STOP# After Read Timeout (RW))
—Enabling this feature allows the
AMD-640 system controller to signal a retry to the initiator by asserting
STOP#. This is the recommended setting.
0=Disabled (default)
1=Enabled (recommended)
LOCK# Function (RW)
—When this bit is enabled, the AMD-640 system
controller samples the LOCK# pin on the PCI bus and reserves the
resource per the PCI specification. The controller does not assert LOCK#
during CPU- to-PCI cycles.
0=Disabled (default)
1=Enabled
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
7.6.4
PCI Target Control Register
(Offset 73h)
Bit 7
LMD
0
6
5
4
3
2
1
Bit 0
PIBTE
0
PT1WSW
0
PT1WSR
0
Reserved
0
ASAWT
0
ASART
0
LOCK
0
Reset
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