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): 34/159頁
文件大小: 1900K
代理商: AMD-640
Signal Descriptions
4-7
21090C/0—June 1997
AMD-640 System Controller Data Sheet
Preliminary Information
REQ[3:0]
PCI Bus Request
As the PCI bus arbiter, the AMD-640 system controller samples
these device-specific bus request signals to determine if
another agent requires control of the PCI bus.
Inputs
SERR#
System Error
A PCI agent (the AMD-640 system controller or other device)
asserts SERR# off the rising clock edge one clock after it
detects a system error. SERR# is an input to the AMD-645
peripheral bus controller, which can be programmed to
generate an NMI.
Output
STOP#
PCI Bus Stop
As a PCI initiator, the AMD-640 system controller samples
STOP# to determine if the target device requires it to abort or
retry a transaction.
Input
TRDY#
Target Ready
As a PCI initiator, the AMD-640 system controller samples
TRDY# to determine when the target agent is able to complete
the data phase of a transaction.
Bidirectional
As a PCI target, the AMD-640 system controller asserts TRDY#
to indicate that it has latched the data on AD31:AD0 during a
write phase or driven data on AD31:AD0 during a read phase.
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