9ZXL0831 Datasheet, PDF (1/18 Pages) Integrated Device Technology – Low-power push-pull outputs

8-OUTPUT LOW-POWER BUFFER FOR PCIE GEN1-2-3 AND QPI
DATASHEET
9ZXL0831
General Description
The 9ZXL0831 is a low-power 8-output differential buffer
that meets all the performance requirements of the Intel
DB800ZL specification. The 9ZXL0831 is backwards
compatible to PCIe Gen1-2 and QPI 6.4GT/s specifications.
A fixed, internal feedback path maintains low drift for critical
QPI applications.
Recommended Application
8-output Low Power PCIe Gen1-2-3/ QPI Buffer
Output Features
• 8 - 0.7V low-power HCSL-compatible output pairs
Block Diagram
Features/Benefits
• Low-power push-pull outputs; Save power and board
space - no Rp
• Space-saving 48-pin VFQFPN package
• Fixed feedback path for 0ps input-to-output delay
• 8 OE# pins; hardware control of each output
• PLL or bypass mode; PLL can dejitter incoming clock
• 100MHz or 133MHz PLL mode operation; supports PCIe
and QPI applications
• Selectable PLL bandwidth; minimizes jitter peaking in
downstream PLL's
• Spread Spectrum Compatible; tracks spreading input
clock for low EMI
Key Specifications
• Cycle-to-cycle jitter <50ps
• Output-to-output skew <65 ps
• Input-to-output delay variation <50ps
• PCIe Gen3 phase jitter <1.0ps RMS
• QPI 9.6GT/s 12UI phase jitter <0.2ps RMS
OE(7:0)#
DIF_IN
DIF_IN#
HIBW_BYPM_LOBW#
100M_133M#
CKPWRGD/PD#
Logic
SMBDAT
SMBCLK
Z-PLL
(SS Compatible)
DFB_OUT_NC
DIF(7:0)
IDT® 8-OUTPUT LOW-POWER BUFFER FOR PCIE GEN1-2-3 AND QPI
1
9ZXL0831
REV C 070115