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參數(shù)資料
| 型號： | ICS2694M-XXX |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 135 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO24 |
| 封裝： | SOIC-24 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 411K |
| 代理商： | ICS2694M-XXX |
ICS2694
Motherboard Clock Generator
Integrated
Circuit
Systems, Inc.
Description
The ICS2694 Motherboard Clock Generator is an integrated
circuit using PLL and VCO technology to generate virtually all
the clock signals required in a PC. The use of the device can be
generalized to satisfy the timing needs of most digital systems
by reprogramming the VCO or reconfiguring the counter stages
which derive the output frequencies from the VCO’s.
The primary VCO is customarily used to generate the CPU
clock and is so labeled on the ICS2694. Pre-programmed
frequency sets are listed on page 6. These choices were made
to match the major microprocessor families. CPUSEL (0-3)
allow the user to select the appropriate frequency for the
application.
Due to the filter in the phase-locked loop, the CPUCLK will
move in a linear fashion from one frequency to a newly-
selected frequency without glitches. If a fixed CPUCLK value
is desired, CPUSEL (0-3) may be hard wired to the desired
address with STROBE tied high. (It has a pull-up.) For board
test and debug, pulling OUTPUTE to Ground will tristate all
the outputs.
Features
Low cost - eliminates multiple oscillators and Count
Down Logic
Primary VCO has 16 Mask Programmable frequencies
(normally CPU clock)
Secondary VCO has 1 Mask Programmable frequency
(usually 96 MHz)
Pre-programmed versions for typical PC applications
10 Outputs in addition to the primary CPU clock
Capability to reconfigure counter stages to change the
frequencies of the outputs via mask options
Advanced PLL design
On-chip PLL filters
Very Flexible Architecture
OUT2
1
24
OUT3
OUT1
2
23
OUT4
OUT0
3
22
OUT5
OUT9
4
21
OUT6
CPUCLK
5
20
OUT7 (CPUCLK/2)
VSS
6
19
OUT8
DVDD
7
18
AVDD
STROBE
8
17
XTAL2
CPUSEL0
9
16
XTAL1
CPUSEL1
10
15
AVSS
CPUSEL2
11
14
OUTPUTE
CPUSEL3
12
13
CLKIN
24-Pin DIP or SOIC
ICS
2694
Pin Configuration
ICS2694RevA1094
Applications
CPU clock and Co-processor clock
Hard Disk and Floppy Disk clock
Keyboard clock
Serial Port clock
Bus clock
System counting or timing functions
DATA SHEET
ICS2694
IDT / ICS Motherboard Clock Generator
ICS2694
1
Motherboard Clock Generator
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS2694N-XXX | 135 MHz, PROC SPECIFIC CLOCK GENERATOR, PDIP24 |
| ICS290PGI | 200 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| ICS291GI-XXLFT | 200 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| ICS301MT-XX | 200 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| ICS300MT-XX-LF | 160 MHz, OTHER CLOCK GENERATOR, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS2694N244 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| ICS2694N-XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| ICS270 | 制造商:ICS 制造商全稱:ICS 功能描述:Triple PLL Field Programmable VCXO Clock Synthesizer |
| ICS270PG | 功能描述:VCXO CLK TRPL PLL PROGR 20-TSSOP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:VersaClock™ 產(chǎn)品變化通告:Product Discontinuation 04/May/2011 標準包裝:96 系列:- 類型:時鐘倍頻器，零延遲緩沖器 PLL:帶旁路 輸入:LVTTL 輸出:LVTTL 電路數(shù):1 比率 - 輸入:輸出:1:8 差分 - 輸入:輸出:無/無 頻率 - 最大:133.3MHz 除法器/乘法器:是/無 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:管件 其它名稱:23S08-5HPGG |
| ICS270PGI | 功能描述:VCXO CLK TRPL PLL PROGR 20-TSSOP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:VersaClock™ 產(chǎn)品變化通告:Product Discontinuation 04/May/2011 標準包裝:96 系列:- 類型:時鐘倍頻器，零延遲緩沖器 PLL:帶旁路 輸入:LVTTL 輸出:LVTTL 電路數(shù):1 比率 - 輸入:輸出:1:8 差分 - 輸入:輸出:無/無 頻率 - 最大:133.3MHz 除法器/乘法器:是/無 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:管件 其它名稱:23S08-5HPGG |
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