W164 Description
CPU Clock Outputs 0 through 1: These two CPU clocks run at a frequency set by SEL100/66#. Output voltage swing is set by the voltage applied to VDDQ2.
W164 Key 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