W158 Description
41, 42, 45, 46 O CPU Clock Outputs 0 through 3: These four CPU clocks run at a frequency set by SEL133/100#. Output voltage swing is set by the voltage applied to VDDQ2.
W158 Key Features
- Maximized EMI suppression using Cypress’s spread spectrum technology
- Intel® CK98 Specification pliant
- 0.5% downspread outputs deliver up to 10 dB lower EMI
- Four skew-controlled copies of CPU output
- Eight copies of PCI output (synchronous w/CPU output)
- Four copies of 66-MHz fixed frequency 3.3V clock
- Two copies of CPU/2 outputs for synchronous memory reference
- Three copies of 16.67-MHz IOAPIC clock, synchronous to CPU clock
- One copy of 48-MHz USB output
- Two copies of 14.31818-MHz reference clock