Clock for Others

The W83195WG-413/W83195CG-413 is a Clock Synthesizer for ATI P4 serial chipsets, which provides all clocks required for the high-speed microprocessor and step-less frequency programming and 32 different frequencies of CPU, PCI, and SRC clocks setting, all clocks are externally selectable with smooth transitions.

W83195WG-413/W83195CG-413 supports I²C serial bus interface to program the registers to enable or disable each clock outputs and provides programmable S.S.T. scale to reduce EMI. It accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply.

• 3 pair current-mode Differential clock outputs for CPU.
• 6 pair current-mode Differential clock outputs for SRC.
• 2 pair current-mode Differential clock outputs for ATIG programmable.
• 1x PCI clock output, 1x 48 MHz clock output for USB, and 3x 14.318MHz REF clock outputs.
• Smooth frequency switch with selections from 100 to 400MHz.
• Step-less frequency programming.
• I²C 2-wire serial interface and support byte read/write and block read/write.
• 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.