9ZX21901C Datasheet | Renesas

Description The 9ZX21901 is Intel DB1900Z Differential Buffer suitable for PCI-Express Gen3 or QPI applications. The part is backwards patible to PCIe Gen1 and Gen2. A fixed external feedback maintains low drift for critical QPI applications. In bypass mode, the 9ZX21901 can provide outputs up to 400MHz. Remended Application - 19-output PCIe Gen3/QPI buffer with fixed feedback for Romley platforms Output Features - 19 - 0.7V current mode differential HCSL output pairs Key Specifications - Cycle-to-cycle jitter: < 50ps - Output-to-output skew: <65ps - Input-to-output delay: Fixed at 0 ps - Input-to-output delay variation: <50ps - Phase jitter: PCIe Gen3 < 1ps rms - Phase jitter: QPI 9.6GB/s < 0.2ps rms Features /Benefits - Fixed feedback path/ 0ps input-to-output delay - 9 Selectable SMBus addresses; Multiple devices can share same SMBus segment - 8 dedicated OE# pins; hardware control of outputs - PLL or bypass mode; PLL can dejitter ining clock - Selectable PLL BW; minimizes jitter peaking in downstream PLL's - Spread spectrum patible; tracks spreading input clock for EMI reduction - SMBus Interface; unused outputs can be disabled - 100MHz & 133.33MHz PLL mode; legacy QPI support - Undriven differential outputs in Power Down mode for maximum power savings Functional Block Diagram OE(12:5)# DIF_IN...