描述 Description

The 9QXL2001B is a 20-output very-low-additive phase jitter

fanout buffer for PCIe Gen4, Gen5 and UPI applications. The

9QXL2001B provides two methods to control output enables;

standard OE# pins and SMBus enable bits, or a simple 3-wire

serial interface that is independent of the SMBus. The OE Control

Mode is set via a hardware strap. It offers integrated terminations

for 85Ω transmission lines.

PCIe Clocking Architectures

? Common Clocked (CC)

? Independent Reference (IR) with and without spread spectrum

Typical Applications

? Servers, Storage, Networking, Accelerators

Key Specifications

? Output-to-output skew: < 50ps

? Additive phase jitter: DB2000Q < 25fs rms

? Additive phase jitter: PCIe Gen4 < 40fs rms

? Additive phase jitter: PCIe Gen5 < 20fs rms

特性 Features

? Two Output Enable Control modes:

? Traditional 8 OE# pins allow hardware control of 8 outputs

and 20 SMBus bits allow software control of each output

? Simple 3-wire Side-Band Interface allows real-time control

of all 20 outputs

? Outputs remain Low/Low when powered up with floating input

clock

? Low-Power HCSL (LP-HCSL) outputs:

? Zo = 85Ω outputs eliminate 80 resistors, saving 130mm2 of

area

? Power consumption reduced by 50

? Nine selectable SMBus addresses

? Spread spectrum compatible

? 6 × 6 mm dual-row 80-VFQFPN

Output Features

20 Low-Power HCSL (LP-HCSL) 85Ω output pairs