參數(shù)資料
型號(hào)： 82439TX
廠商： INTEL CORP
元件分類： 存儲(chǔ)控制器/管理單元
英文描述： System Controller(系統(tǒng)控制器)
中文描述： 256M X 8, DRAM CONTROLLER, PBGA324
封裝： BGA-324
文件頁(yè)數(shù)： 61/83頁(yè)
文件大?。?/td> 461K
代理商： 82439TX
E
Table 18 lists the performance summary for SDRAM. The CL= 3 column represents a CAS latency of 3 part with
a RAS to CAS (Trcd) of two clocks. The CL=2 column represents a CAS latency of two part. The performance
numbers in Table 18 assume each row is populated with a maximum of eight, x8 devices=40 SDRAM devices.
82439TX (MTXC)
61
PRELIMINARY
The SLD bit (page hit, row miss, and page miss) is used to control the leadoff for read cycles. This bit removes
one clock from the leadoff, when enabled.
Table 18. SDRAM Performance Summary
Processor Cycle Type
60/66 MHz
CL=3
Five Rows (Max)
60/66 MHz
CL=2
Five Rows (Max)
Burst Read Page Hit
7-1-1-1
6-1-1-1
Read row Miss
1
9-1-1-16
8-1-1-1
Read Page Miss
12-1-1-16
11-1-1-1
Back-to-Back Burst Reads Page Hit
7-1-1-1 2-1-1-1
6-1-1-1 2-1-1-1
Write Page Hit
2,3
3
3
Write Row Miss
2,3
6
5
Write Page Miss
2,3
9
8
Posted Write
2,3
3-1-1-1
3-1-1-1
Write retire rate from Posted Write Buffer
-1-1-1
-1-1-1
Reg 54h, Bit 5 (RCO)
5
1
0
Reg 54h, Bit 4 (CL)
0
1
Reg 54h, Bit 3 (RT)
0
1
Reg 56h, Bit 4 (SLD)
4
0
0
NOTES:
1.
The row miss cycle assumes that the new page is closed from the prior cycle.
2.
This cycle timing assumes the write buffer(DWB) is empty.
3.
Write data is always posted as 3-1-1-1 (ADS# to BRDY#), if write buffers is available.
4.
This bit (SLD) must be set to a 1 (speculative leadoff disable) in systems with cache and to 0 in systems
without cache.
5.
For a CL=3 part that can not meet a RAS to CAS timing (Trcd) of two HCLKs, RCO can be set to 0. This will
add an HCLK to the leadoff cycle for Row miss and Page miss cycles.
相關(guān)PDF資料
PDF描述
82443MX PCIset
82443ZX Intel㈢ 440ZX AGPset: Host Bridge/Controller
82451NX Intel 450NX PCIset
82452NX Intel 450NX PCIset
82453NX Intel 450NX PCIset
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
82439TXC 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:INTEL 430HX PCISET 82439HX SYSTEM CONTROLLER (TXC)
8243-A-0632-0 制造商:AMATOM ELECTRONIC HARDWARE 功能描述:
8243-W 功能描述:WIPE OPTICAL INDIVIDUAL PACKS RoHS:是 類別:靜電控制，ESD，無(wú)塵室產(chǎn)品 >> 處理劑，清潔劑，擦拭布 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 處理劑/清潔劑類型:清潔布 使用:電子設(shè)備 技術(shù)規(guī)格:無(wú)絨毛，微纖維 數(shù)量:100（12" L x 12" W） 包裝:袋
8243-W X(25) 功能描述:化學(xué)物質(zhì) OPTICAL WIPE 25 PER BOX RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Adhesives 類型:Epoxy Compound 大小:1.7 oz 外殼:Plastic Tube
8243-WX25 功能描述:WIPE OPTICAL INDIVIDUAL PACKS RoHS:是 類別:靜電控制，ESD，無(wú)塵室產(chǎn)品 >> 處理劑，清潔劑，擦拭布 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 處理劑/清潔劑類型:清潔布 使用:電子設(shè)備 技術(shù)規(guī)格:無(wú)絨毛，微纖維 數(shù)量:100（12" L x 12" W） 包裝:袋
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*