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参数资料
| 型号： | MK1491-06R |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 49.152 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28 |
| 封装： | 0.150 INCH, 0.025 INCH PITCH, MO-153, SSOP-28 |
| 文件页数： | 6/10页 |
| 文件大小： | 215K |
| 代理商： | MK1491-06R |
AMD Geode Clock Source
MDS 1491-06 J
5
Revision 110204
Integrated Circuit Systems, Inc.
● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
MK1491-06
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MK1491-06RLF | 功能描述:时钟合成器/抖动清除器 AMD GEODE CLOCK SOURCE RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| MK1491-06RLFTR | 功能描述:时钟合成器/抖动清除器 AMD GEODE CLOCK SOURCE RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| MK1491-06RTR | 功能描述:IC CLK SOURCE AMD GEODE 28-QSOP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:- 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| MK1491-06S | 功能描述:IC CLK SOURCE AMD GEODE 28-SOIC RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:- 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| MK1491-06SLF | 功能描述:时钟合成器/抖动清除器 AMD GEODE CLOCK SOURCE RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
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