9ZX21501CKLFT

DATASHEET 9ZX21501C FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI Description Features/Benefits The 9ZX21501C is a 15-output version of the Intel DB1900Z Differential Buffer suitable for PCI-Express Gen3 or QPI applications. The part is backwards compatible to PCIe Gen1 and Gen2. A fixed external feedback maintains low drift for critical QPI applications. In bypass mode, the 9ZX21501C can provide outputs up to 400MHz. • Fixed feedback path; 0ps input-to-output delay • 9 Selectable SMBus addresses; multiple devices can share same SMBus segment • 7 dedicated OE# pins; hardware control of outputs • PLL or bypass mode; PLL can dejitter incoming clock • Selectable PLL BW; minimizes jitter peaking in Recommended Application 15-output PCIe Gen3/QPI buffer with fixed feedback for Romley platforms Output Features • 15 - 0.7V current mode differential HCSL output pairs • • • • downstream PLL's Spread spectrum compatible; 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 Key Specifications • • • • • • Cycle-to-cycle jitter: