w83195bg-202 Winbond Electronics Corp America, w83195bg-202 Datasheet - Page 5

• Manufacturer Part Number: w83195bg-202
• Description: Clock For Via Chipsets
• Manufacturer: Winbond Electronics Corp America

W83195BR-202/W83195BG-202
CLOCK GEN. FOR AMD K8 SYSTEM SERIES CHIPSET
1. GENERAL DESCRIPTION
The W83195BR-202 is a Clock Synthesizer meets AMD ATHLON 64 and OPTERON Processors
series chipset. The W83195BR-202 provides all clocks required for high-speed microprocessor and
provides step-less frequency programming and 32 different frequencies of CPU, AGP, PCI, PCI-
Express clocks setting. All clocks are externally selectable with smooth transitions.
Employing the use
2
of a serially programmable I
C interface, this device can adjust the output clocks by configuring the
frequency setting, the output divider ratios, selecting the ideal spread percentage, the output skew, the
By the way, the W83195BR-202 also
output strength, and enabling/disabling each individual output clock.
has watchdog timer and reset out pin to support auto-reset when systems hanging caused by
improper frequency setting.
2. PRODUCT FEATURES
• 2 pair 3.3V push-pull differential clock outputs for CPU and Chipset
• 6 PCI-Ex differential pairs
• 3 AGP clock output
• 7 PCI synchronous clocks
• 1 48MHz clock outputs
• 1 24_48MHz for I/O chip, default 24MHz
• 2 REF 14.318MHz clock outputs
2
• I
C 2-Wire serial interface supports block and byte mode read/write
• Step-less frequency programming
• Smooth frequency switch with selections from 100 to 400MHz
• Programmable clock outputs Slew rate control and Skew control
• +/- 0.5% center type spread spectrum in table mode
• Programmable S.S.T. scale to reduce EMI
• Programmable registers to enable/stop each output and select modes
• Watch dog timer and RESET# output pins
• 56-pin SSOP package
Publication Release Date: Apr. 2006
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Revision 0.6