W83195WG-382 Datasheet, PDF (5/27 Pages) Winbond – Winbond Clock Generator

W83195WG-382/W83195CG-382
STEPLESS FOR ATI K8 CLOCK GENERATOR
1. GENERAL DESCRIPTION
The W83195WG-382/W83195CG-382 is a Clock Synthesizer for ATI K8 serial chipsets. W83195WG-
382/ W83195CG-382 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-382/ W83195CG-382 has watchdog timer and reset output pin to support auto-reset
when systems hanging caused by improper frequency setting. It also support CPU TURBO function
when system has heavy loading.
The W83195WG-382/W83195CG-382 provides 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.
The W83195WG-382/W83195CG-382 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.
• CPU TURBO function support.
• 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.
• Watch Dog Timer and RESET# output pins
• 56 pin TSSOP/SSOP package.
Publication Release Date: Feb 2006
-1-
Revision 0.6