STEPLESS FOR ATI K8 CLOCK GENERATOR

Publication Release Date: Feb 2006

1

Revision 0.6

W83195WG-416/W83195CG-416

1.

GENERAL DESCRIPTION

The W83195WG-416/W83195CG-416 is a Clock Synthesizer for ATI K8 serial chipsets. W83195WG-

416/ W83195CG-416 provides all clocks required for the high-speed microprocessor and provides

step-less frequency programming and 32 different frequencies of CPU, PCI, and SRC clocks setting,

all clocks are externally selectable with smooth transitions.

The W83195WG-416/W83195CG-416 provides I

enable or disable each clock outputs and provides programmable S.S.T. scale to reduce EMI.

The W83195WG-416/W83195CG-416 accepts a 14.318 MHz reference crystal as its input and runs

on a 3.3V supply.

2.

PRODUCT FEATURES

• 2 pair push-pull Differential clock outputs for CPU.

• 6 pair current-mode Differential clock outputs for SRC.

• 2 pair current-mode Differential clock outputs for ATIG programmable.

• 1 PCI clock output.

• 1 48 MHz clock output for USB.

• 3 14.318MHz REF clock outputs.

• 1 HTT 66MHz clock output.

• Smooth frequency switch with selections from 100 to 400MHz.

• Step-less frequency programming.

• Programmable S.S.T. scale to reduce EMI in M/N mode.

• Programmable registers to enable/disable each output and select modes.

• Programmable clock outputs slew rate control and skew control.

• 56 pin TSSOP/SSOP package.