w83195bg-101 Winbond Electronics Corp America, w83195bg-101 Datasheet - Page 5

• Manufacturer Part Number: w83195bg-101
• Description: Winbond Clock Generator For Intel 915/925 Chipsets
• Manufacturer: Winbond Electronics Corp America

W83195BR/G-101
STEPLESS FOR INTEL 915/925 CHIPSETS
1. GENERAL DESCRIPTION
The W83195BR/G-101 is a Clock Synthesizer for Intel P4 processors and Intel Grandsdale chipsets.
W83195BR/G-101 provides all clocks required for high-speed microprocessor and provides step-less
frequency programming, 32 different frequencies of CPU, PCI, SRC clocks setting. Simultaneously
W83194BR-101 supports SRC_SATA 100MHz clock output for SATA and DOT 96MHz clock outputs
for integrated graphic chipsets. All clocks are externally selectable with smooth transitions.
2
The W83195BR/G-101 programs the registers to enable or disable each clock outputs through I
C
serial bus interface and provides -0.5% down type spread spectrum or programmable spread
spectrum scale to reduce EMI.
The W83195BR/G-101 is driven with a 14.318 MHz reference crystal and runs on a 3.3V supply.
2. PRODUCT FEATURES
• 2 pair 0.7 V current mode Differential clock outputs for CPU
• 6 pair 0.7V current mode Differential clock outputs for SRC and SRC_SATA.
• 1 pair 0.7V current mode Differential 96MHz clock outputs for DOT.
• 6 PCI clock outputs for PCI
• 3 PCI clock free running outputs for PCI
• 1 48 MHz clock output for USB.
• 1 14.318MHz REF clock outputs.
• Step-less frequency programming
2
• I
C 2-Wire serial interface and support byte read/write and block read/write.
• -0.5% down type spread spectrum in H/W and software select mode.
• Programmable S.S.T. scale to reduce EMI in M/N mode.
• Programmable registers to enable/stop each output.
• Programmable clock outputs to control skew.
• Watch Dog Timer output
• 56 pin SSOP package
Publication Release Date: March 2006
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Revision 0.7