參數(shù)資料
型號(hào)： 951411BGLFT
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 時(shí)鐘產(chǎn)生/分配
英文描述： 400 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56
封裝： 6.10 MM, 0.50 MM PITCH, GREEN, MO-153, TSSOP-56
文件頁(yè)數(shù)： 9/21頁(yè)
文件大?。?/td> 225K
代理商： 951411BGLFT
17
Integrated
Circuit
Systems, Inc.
ICS951411
0891E—03/07/05
Fig. 1
Shared Pin Operation -
Input/Output Pins
The I/O pins designated by (input/output) on the ICS951416
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
W
8.2K
W
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
952302AG PROC SPECIFIC CLOCK GENERATOR, PDSO48
9148F-18 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28
932S203YGLFT 133.3 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56
9FG1200DG-1LFT 400 MHz, OTHER CLOCK GENERATOR, PDSO56
935267488112 8-BIT, OTPROM, 20 MHz, MICROCONTROLLER, PDSO20
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951412-2011309-AR-TP 功能描述:集管和線殼 12P BD STCK HDR 2R STRT SMT 10U AU RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點(diǎn)類型:Pin (Male) 節(jié)距:1 mm 位置/觸點(diǎn)數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點(diǎn)材料:Brass 觸點(diǎn)電鍍:Gold 制造商:Hirose Connector
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951412-2011409-AR-TP 功能描述:集管和線殼 12P BD STCK HDR 2R STRT SMT 10U AU RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點(diǎn)類型:Pin (Male) 節(jié)距:1 mm 位置/觸點(diǎn)數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點(diǎn)材料:Brass 觸點(diǎn)電鍍:Gold 制造商:Hirose Connector
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