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參數(shù)資料
| 型號： | MK1491-06STR |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 49.152 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28 |
| 封裝： | 0.150 INCH, MO-153, SOIC-28 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大?。?/td> | 284K |
| 代理商： | MK1491-06STR |
MK1491-06
AMD GEODE CLOCK SOURCE
CLOCK SYNTHESIZER
IDT / ICS AMD GEODE CLOCK SOURCE
5
MK1491-06
REV J 110204
External Components
The MK1491-06 requires some inexpensive external
components for proper operation. Decoupling capacitors of
0.1F should be connected on each VDD pin to ground, as
close to the MK1491-06 as possible. A series termination
resistor of 33
may be used for each clock output. See the
discussion below for other external resistors required for
proper I/O operation. The 14.3 MHz oscillator has internal
caps that provide the proper load for a parallel resonant
crystal with CL=18 pF. For tuning with other values of CL, the
formula 2*(CL-18) gives the value of each capacitor that
should be connected between X1 and ground and X2 and
ground.
I/O Structure
The MK1491-06 provides more functionality in a 28-pin
package by using a unique I/O technique. The device
checks the status of all I/O pins during power-up and at exit
from the Power Down state. This status (pulled high, low, or
mid-level) then determines the frequency selections and
power down modes (see the tables on pages 2 and 4).
Within 10ms after power up, the inputs change to outputs
and the clocks start up. In the diagrams to the right, the 33
resistors are the normal output termination resistors. The
10k
resistor pulls low to generate a logic zero. Weak
internal pull-up resistors are present on SEL24, EPCI#, FS,
LE#, PCISTP#, and SLOW#. These pins should be
connected directly to VDD or GND if not under active
control. Internal resistors on PEN, SEL AUDIO, and TS pull
to a mid-level (M).
*Note: Do not use a TTL load. This will overcome the 10 k
pull-down and force the input to a logic 1.
33
To load*
10 k
I/O
For select
= 0 (low)
Do not stuff for
“1” selection
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MK1491-09 | 制造商:ICS 制造商全稱:ICS 功能描述:AMD Geode GX2 Clock Source |
| MK1491-09F | 功能描述:IC CLK SRC AMD GEODE GX2 28-SSOP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| MK1491-09FILN | 功能描述:時鐘合成器/抖動清除器 AMD GEODE GX2 CLOCK SOURCE RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| MK1491-09FILNTR | 功能描述:時鐘合成器/抖動清除器 AMD GEODE GX2 CLOCK SOURCE RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| MK1491-09FLN | 功能描述:時鐘合成器/抖動清除器 AMD GEODE GX2 CLOCK SOURCE RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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