9ZX21901D数据手册集成电路（IC）的应用特定时钟/定时规格书PDF

描述 Description

The 9ZX21901D is a second generation DB1900Z differential buffer for Intel Purley and newer platforms. The part is backwards compatible to the 9ZX21901C while offering much improved phase jitter performance. A fixed external feedback maintains low drift for critical QPI/UPI applications. In bypass mode, the 9ZX21901D can provide outputs up to 400MHz.

特性 Features

19 HCSL output pairs
Fixed feedback path
Phase jitter: PCIe Gen4 < 0.5ps rms
Phase jitter: UPI 9.6GT/s < 0.1ps rms
PLL or bypass mode; PLL can dejitter incoming clock
9 selectable SMBus Addresses
8 dedicated OE# pins
100MHz or 133MHz PLL mode; legacy QPI support
Selectable PLL bandwidth; minimizes jitter peaking in downstream PLLs
Spread spectrum compatible
SMBus interface
10 × 10 mm 72-QFN package

应用 Application

• 企业服务器