參數(shù)資料
型號(hào)： ICS952801yFT
英文描述： Programmable Timing Control HubTM for K8TM processor
中文描述： 可編程定時(shí)控制HubTM處理器K8TM
文件頁(yè)數(shù)： 21/22頁(yè)
文件大小： 191K
代理商： ICS952801YFT
21
Integrated
Circuit
Systems, Inc.
ICS952801
Advance Information
0719—01/22/03
Fig. 1
Shared Pin Operation -
Input/Output Pins
The I/O pins designated by (input/output) serve as dual
signal functions to the device. During initial power-up, they
act as input pins. The logic level (voltage) that is present on
these pins at this time is read and stored into a 5-bit internal
data latch. At the end of Power-On reset, (see AC
characteristics for timing values), the device changes the
mode of operations for these pins to an output function. In
this mode the pins produce the specified buffered clocks to
external loads.
To program (load) the internal configuration register for these
pins, a resistor is connected to either the VDD (logic 1) power
supply or the GND (logic 0) voltage potential. A 10 Kilohm (10K)
resistor is used to provide both the solid CMOS programming
voltage needed during the power-up programming period and to
provide an insignificant load on the output clock during the
subsequent operating period.
Via to
VDD
Clock trace to load
Series Term. Res.
Programming
Header
Via to Gnd
Device
Pad
2K
8.2K
Figure 1 shows a means of implementing this function
when a switch or 2 pin header is used. With no jumper is
installed the pin will be pulled high. With the jumper in
place the pin will be pulled low. If programmability is not
necessary, than only a single resistor is necessary. The
programming resistors should be located close to the series
termination resistor to minimize the current loop area. It is
more important to locate the series termination resistor
close to the driver than the programming resistor.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ICS952802 制造商:ICS 制造商全稱:ICS 功能描述:Programmable Timing Control Hu for P4 processor
ICS952906A 制造商:ICS 制造商全稱:ICS 功能描述:Programmable Timing Control Hub for Next Gen P4⑩ processor
ICS952906AF 功能描述:IC TIMING CTRL HUB P4 48-SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:TCH™ 標(biāo)準(zhǔn)包裝:28 系列:- 類(lèi)型:時(shí)鐘/頻率發(fā)生器 PLL:是 主要目的:Intel CPU 服務(wù)器 輸入:時(shí)鐘 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:3:22 差分 - 輸入:輸出:無(wú)/是 頻率 - 最大:400MHz 電源電壓:3.135 V ~ 3.465 V 工作溫度:0°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:64-TFSOP （0.240"，6.10mm 寬） 供應(yīng)商設(shè)備封裝:64-TSSOP 包裝:管件
ICS952906AFLF 功能描述:IC TIMING CTRL HUB P4 48-SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:TCH™ 標(biāo)準(zhǔn)包裝:28 系列:- 類(lèi)型:時(shí)鐘/頻率發(fā)生器 PLL:是 主要目的:Intel CPU 服務(wù)器 輸入:時(shí)鐘 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:3:22 差分 - 輸入:輸出:無(wú)/是 頻率 - 最大:400MHz 電源電壓:3.135 V ~ 3.465 V 工作溫度:0°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:64-TFSOP （0.240"，6.10mm 寬） 供應(yīng)商設(shè)備封裝:64-TSSOP 包裝:管件
ICS952906AFLFT 功能描述:IC TIMING CTRL HUB P4 48-SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:TCH™ 標(biāo)準(zhǔn)包裝:28 系列:- 類(lèi)型:時(shí)鐘/頻率發(fā)生器 PLL:是 主要目的:Intel CPU 服務(wù)器 輸入:時(shí)鐘 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:3:22 差分 - 輸入:輸出:無(wú)/是 頻率 - 最大:400MHz 電源電壓:3.135 V ~ 3.465 V 工作溫度:0°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:64-TFSOP （0.240"，6.10mm 寬） 供應(yīng)商設(shè)備封裝:64-TSSOP 包裝:管件
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