Renesas Electronics Corporation Clock/Timing - Application Specific 932S421CFLF

The 932S421CFLF is an application-specific clock and timing device designed for Intel-based servers, supporting PCIe Gen 2 and QPI compliant clock outputs. It features multiple output types, including four 0.7V current-mode differential CPU pairs, five 0.7V current-mode differential SRC pairs, four PCI clock outputs at 33MHz, a free-running PCICLK_F output at 33MHz, a 48MHz output, and two reference outputs at 14.318MHz. This device supports spread spectrum modulation with a down spread of 0 to -0.5%, and utilizes an external 14.318MHz crystal for low ppm synthesis error. The CPU clocks operate independently from the SRC and PCI clocks, and the device includes a D2/D3 SMBus address for communication. Key specifications include a cycle-to-cycle jitter of less than 50ps for CPU clocks, less than 125ps for SRC clocks, and less than 500ps for PCI clocks, with a frequency accuracy of ±100ppm across all outputs. The 932S421CFLF is packaged in a 56-pin SSOP configuration and is RoHS compliant, making it suitable for various applications in server environments where precise clock timing is critical.