9ZX21501C Datasheet | IDT

Description 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 patible 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. Remended Application 15-output PCIe Gen3/QPI buffer with fixed feedback for Romley platforms Output Features - 15 - 0.7V current mode differential HCSL output pairs Functional Block Diagram Features /Benefits - 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 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 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 OE(5_8,10_12)# DIF_IN DIF_IN# HIBW_BYPM_LOBW# 100M_133M# CKPWRGD/PD# SMB_A0_tri SMB_A1_tri SMBDAT SMBCLK Logic Z-PLL (SS patible) DFB_OUT DIF(14:0) IREF IDT® FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI REV F 041613 9ZX21501C FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI Pin Configuration GNDA VDDA DIF_17# DIF_17 VDD DIF_16# DIF_16 DIF_15# DIF_15 GND DIF_13# DIF_13 VDD OE12# DIF_12#...