Overview
The W149 was developed as a single chip device to meet the clocking needs of the Intel 440BX AGPset. In addition to the typical outputs provided by standard 100-MHz 440BX AGPset FTGs, the W149 adds a thirteen output buffer, supporting SDRAM DIMM modules in conjunction with the chipset.

Features
• Maximized EMI suppression using Cypress’s Spread Spectrum Technology
• Single chip system frequency synthesizer for Intel® 440BX AGPset
• Two copies of CPU output
• Six copies of PCI output
• One 48 MHz output for USB
• One 24 MHz output for SIO
• Two buffered reference outputs
• One IOAPIC output
• Thirteen SDRAM outputs provide support for 3 DIMMs
• Spread Spectrum feature always enabled
• SMBus interface for programming
• Power management control inputs
• Smooth CPU frequency switching from 66.8–124 MHz