參數(shù)資料
型號(hào)： ICS951901
英文描述： 16-Bit Buffers/Drivers With 3-State Outputs 48-TVSOP -40 to 85
中文描述： 可編程頻率發(fā)生器
文件頁(yè)數(shù)： 14/19頁(yè)
文件大?。?/td> 180K
代理商： ICS951901
14
ICS951901
0670B—07/15/04
Fig. 1
Shared Pin Operation -
Input/Output Pins
The I/O pins designated by (input/output) on the ICS951901
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.
相關(guān)PDF資料
PDF描述
ICS951901yFLF-T Programmable Frequency Generator & Integrated Buffers for Pentium III Processor
ICS952001 Preliminary Product Previes
ICS952003 Programmable Timing Control Hub for P4⑩ processor
ICS952003YFT Programmable Timing Control Hub for P4⑩ processor
ICS952004 16-Bit Buffers/Drivers With 3-State Outputs 48-TSSOP -40 to 85
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ICS951901AF 功能描述:IC FREQ GENERATOR/BUFFER 48-SSOP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:28 系列:- 類型: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
ICS951901AFLF 功能描述:IC FREQ GENERATOR/BUFFER 48-SSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:28 系列:- 類型: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
ICS951901AFLFT 功能描述:IC FREQ GENERATOR/BUFFER 48-SSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:28 系列:- 類型: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
ICS951901AFT 功能描述:IC FREQ GENERATOR/BUFFER 48-SSOP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:28 系列:- 類型: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
ICS951901YFLF-T 制造商:ICS 制造商全稱:ICS 功能描述:Programmable Frequency Generator & Integrated Buffers for Pentium III Processor
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