9DBV0431_16 Datasheet, PDF (1/16 Pages) Integrated Device Technology – 4-output 1.8V PCIe Gen1-2-3 Zero-delay/Fanout Buffer (ZDB/FOB)

4-output 1.8V PCIe Gen1-2-3
Zero-delay/Fanout Buffer (ZDB/FOB)
9DBV0431
DATASHEET
Description
The 9DBV0431 is a member of IDT's SOC-Friendly 1.8V
Very-Low-Power (VLP) PCIe family. It can also be used for
50M or 125M Ethernet Applications via software frequency
selection. The device has 4 output enables for clock
management, and 3 selectable SMBus addresses.
Recommended Application
1.8V PCIe Gen1-2-3 Zero-Delay/Fan-out Buffer (ZDB/FOB)
Output Features
• 4 - 1-200Hz Low-Power (LP) HCSL DIF pairs
w/ZO=100ohms
Key Specifications
• DIF cycle-to-cycle jitter <50ps
• DIF output-to-output skew <50ps
• DIF additive phase jitter is <100fs rms for PCIe Gen3
• DIF additive phase jitter <300fs rms for 12k-20MHz
Block Diagram
Features/Benefits
• LP-HCSL outputs save 8 resistors; minimal board space
and BOM cost
• 53mW typical power consumption in PLL mode; minimal
power consumption
• OE# pins; support DIF power management
• HCSL compatible differential input; can be driven by
common clock sources
• Programmable Slew rate for each output; allows tuning for
various line lengths
• Programmable output amplitude; allows tuning for various
application environments
• Pin/software selectable PLL bandwidth and PLL Bypass;
minimize phase jitter for each application
• Outputs blocked until PLL is locked; clean system start-up
• Software selectable 50MHz or 125MHz PLL operation;
useful for Ethernet applications
• Configuration can be accomplished with strapping pins;
SMBus interface not required for device control
• 3.3V tolerant SMBus interface works with legacy controllers
• Space saving 32-pin 5x5mm VFQFPN; minimal board
space
• Selectable SMBus addresses; multiple devices can easily
share an SMBus segment
vOE(3:0)#
4
CLK_IN
CLK_IN#
vSADR
^vHIBW_BYPM_LOBW#
^CKPWRGD_PD#
SDATA_3.3
SCLK_3.3
SS-
Compatible
PLL
CONTROL
LOGIC
DIF3
DIF2
DIF1
DIF0
9DBV0431 REVISION E 04/28/16
1
©2016 Integrated Device Technology, Inc.