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): 16/159頁
文件大小: 1900K
代理商: AMD-640
Features
1-3
21090C/0—June 1997
AMD-640 System Controller Data Sheet
Preliminary Information
EDO DRAMs on a 66-MHz bus:
5-2-2-2 on-page, 8-2-2-2 start-page, 11-2-2-2 page-miss, and
5-2-2-2-3-2-2-2 back-to-back access
-15 SDRAMs on a 60-MHz bus, CAS latency = 2:
5-1-1-1 on-page, 8-1-1-1 start-page, 10-1-1-1 page-miss, and
5-1-1-1-3-1-1-1 back-to-back access
-12/-10 SDRAMs on a 100-MHz bus, CAS latency = 3:
6-1-1-1 on-page, 9-1-1-1 start-page, 11-1-1-1 page-miss, and
6-1-1-1-3-1-1-1 back-to-back access
Supports BIOS shadowing on 16-Kbyte boundaries
Decoupled and burst DRAM refresh with staggered RAS
timing
Provides the following refresh options:
Programmable refresh rate
CAS-before-RAS
Populated banks only
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1.4
PCI Bus Controller
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Support for five PCI masters
32-bit 3.3-V and 5-V PCI interface
Synchronous PCI bus operation up to 33 MHz
PCI initiator snoop-ahead and snoop filtering
PCI initiator peer concurrence
Automatic processor-to-PCI burst cycle detection
Five-doubleword processor-to-PCI post write buffer
48-doubleword PCI-to-DRAM post write buffer (16 + 32)
26-doubleword DRAM-to-PCI prefetch buffer (10 +16)
Byte merging on processor-to-PCI posted writes to reduce
the number of PCI write cycles
Zero wait state PCI initiator and target burst transfers
PCI-to-DRAM data streaming up to 132 Mbytes per second
Full compliance with
PCI Bus Specification, Revision 2.1
Enhanced PCI command optimization (MRL, MRM, MWI)
Timer-enforced fair arbitration between PCI initiators
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