950401中文资料AMD-K8™ System Clock Chip数据手册Renesas规格书

描述 Description

The 950401 is a main clock synthesizer chip for AMD-K8. This provides all clocks required for Clawhammer and Sledgehammer systems. Spread spectrum may be enabled through I2C programming. Spread spectrum typically reduces system EMI by 8dB to 10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The 950401 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations. Serial programming I2C interface allows changing functions, stop clock programming and frequency selection.

特性 Features

2 - Differential pair push-pull CPU clocks @ 3.3V
7 - PCI (Including 1 free running) @3.3V
3 - Selectable HT/PCI 66/33MHz @3.3V
1 - 48MHz, @3.3V fixed.
1 - 24/48MHz @ 3.3V
3 - REF @3.3V, 14.318MHz.
Up to 220MHz frequency support
Support power management: PCI stop and stop clocks controlled by I2C.
Spread spectrum for EMI reduction
Uses external 14.318MHz crystal
I2C programmability features
Supports Hypes transport technology (HT66 output).