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參數(shù)資料
| 型號： | ICS9178-03 |
| 英文描述： | 245 MHz Clock Generator and Integrated Buffer for PowerPC™ |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 526K |
| 代理商： | ICS9178-03 |
Integrated
Circuit
Systems, Inc.
General Description
Features
Generates 2 PECL 2x processor, 2 TTL/CMOS 1x
processor and 10 selectable bus clocks
2XPCLK ranges from 75 MHz to 245 MHz (5V or
5V/3.3V mixed supply) or 60 to 170 MHz (3.3V only)
Asymmetric duty cycle bus clock for PowerPC
Bus to processor clock skews less than ±250ps
2XPCLK to PCLK skew controlled at 300 ±300ps
Selectable reference multiplying factors
Selectable PCLK/BCLK and PCLK/XCLK ratios
Separate supplies allow 5V and 3.3V output mix
3.0V - 5.5V supply range
44-pin PQFP package
ICS9178-03
Block Diagram
ICS9178-03 Rev C 02/12/98P
245 MHz Clock Generator and Integrated Buffer for PowerPC
The
ICS9178-03
generates all clocks required for high speed
PowerPC RISC microprocessor systems. Generating clocks
in phase with an external reference frequency allows the
ICS9178-03
to be used as a multiplying zero delay buffer.
Three different multiplying factors are externally selectable.
These factors can be customized for specific applications. An
external frequency can be directly applied to aid system
testing. With 2X processor clock speeds up to 245 MHz,
PECL outputs are provided. User selectable frequency ratios
are available for PCLK/BCLK and PCLK/XCLK. Each pair of
clocks outputs have separate supply pins to minimize output
jitter and allow them to operate at 5V, 3.3V or custom voltage
levels.
PowerPC is a trademark of Motorola Corporation.
Applications
Ideal for high-speed systems based on PowerPC
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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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ICS9178Y-03 | 制造商:ICS 制造商全稱:ICS 功能描述:245 MHz Clock Generator and Integrated Buffer for PowerPC™ |
| ICS9179-03 | 制造商:ICS 制造商全稱:ICS 功能描述:Low Skew Fan Out Buffers |
| ICS9179-06 | 制造商:ICS 制造商全稱:ICS 功能描述:Zero Delay Buffers |
| ICS9179-12 | 制造商:ICS 制造商全稱:ICS 功能描述:3 DIMM Buffer |
| ICS9179B-01 | 制造商:ICS 制造商全稱:ICS 功能描述:Low Skew Buffers |
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