Cypress Semiconductor W164
The output voltage swing is set by the power connection to VDDQ2.| Part No. | W164 |
|---|---|
| Datasheet | W164 Download |
| Manufacturer |  Cypress Semiconductor |
| Description | Spread Spectrum Desktop/Notebook System Frequency Generator |
| Buy | Stock & Price |
FEATURES
● Maximized EMI suppression using Cypress’s Spread Spectrum technology● Reduces measured EMI by as much as 10 dB
● I2C programmable to 153 MHz (16 selectable frequencies)
● Two skew-controlled copies of CPU output
● SEL100/66# selects CPU frequency (100 or 66.8 MHz)
● Seven copies of PCI output (synchronous w/CPU output)
● One copy of 14.31818-MHz IOAPIC output
● One copy of 48-MHz USB output
● Selectable 24-/48-MHz output is determined by resistor straps on power-up
● One high-drive output buffer that produces a copy of the 14.318-MHz reference
● Isolated core VDD pin for noise reduction Key Specifications Supply Voltages:....................................... VDDQ3 = 3.3V±5% VDDQ2 = 2.5V±5% CPU Cycle to Cycle Jitter: ........................................... 200 ps CPU, PCI Output Edge Rate: ......................................... ≥1 V/ns CPU0:1 Output Skew: ................................................ 175 ps PCI_F, PCI1:6 Output Skew: .......................................500 ps CPU to PCI Skew: ..............................
