GTL2009 Datasheet PDF

NXP Semiconductors GTL2009

The GTL2009 is designed for the Nocona and Dempsey/Blackford dual Intel Xeon processor platforms to compare the Front-Side Bus (FSB) frequency settings and set the common FSB frequency at the lowest setting if both processor slots are occupied or the FSB setting of the occupied processor slot if only one processor is being used. The common FSB frequency GTL outputs switch from the default frequency to the computed frequency when the GTL reference voltage input (VREF) crosses a static 0.6 V internally generated input comparator reference voltage. The GTL2009 then continually monitors the FSB frequency and slot occupied inputs for any further changes.