参数资料
型号: ICS9248YF-80
元件分类: XO, clock
英文描述: 133.34 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28
封装: 0.209 INCH, SSOP-28
文件页数: 1/7页
文件大小: 157K
代理商: ICS9248YF-80
Integrated
Circuit
Systems, Inc.
General Description
Features
ICS9248-80
Block Diagram
Pentium II is a trademark of Intel Corporation
I
2C is a trademark of Philips Corporation
General Purpose 133MHz System Clock
9248-80 Rev A 3/21/00
Pin Configuration
Extended temperature range (-20°C to +70°C)
Output features:
- 8 CLK outputs @ 3.3V, up to 133.34MHz.
-1-REFoutput@3.3V,14.31818MHz.
Spread Spectrum for EMI control
I2C interface to stop clocks, select spread and frequency.
Excellent power managment feature through CLK_STOP#
and individual stop clocks through I2C.
Input is from a 14.31818MHz crystal.
28-Pin 209 mil SSOP
The ICS9248-80 is a general purpose system clock. It
provides 8 output CLKs, 1 REF CLK and excellent power
management features through CLK_STOP#.
Spread spectrum may be enabled through I2C programming.
Spread spectrum typically reduces EMI by 8dB to 10 dB.
This simplifies EMI qualification without resorting to board
design iterations or costly shielding. The ICS9248-80
employs a proprietary closed loop design, which tightly
controls the percentage of spreading over process and
temperature variations.
* These inputs have a 120K internal pull-up to 3.3V.
** These inputs have a 120K internal pull-down to GND.
ICS reserves the right to make changes in the device data identified in
this publication without further notice. ICS advises its customers to
obtain the latest version of all device data to verify that any
information being relied upon by the customer is current and accurate.
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