9FGU0231AKILFT集成電路（IC）的應(yīng)用特定時鐘/定時規(guī)格書PDF中文資料

Description

The 9FGU0231 is a member of IDT's 1.5V Ultra-Low-Power

PCIe clock family. The device has 2output enables for clock

management, 2 different spread spectrum levels in addition to

spread off and 2 selectable SMBus addresses.

Recommended Application

1.5V PCIe Gen1-2-3 clock generator

Output Features

? 2 - 100MHz Low-Power (LP) HCSL DIF pairs

? 1 - 1.5V LVCMOS REF output w/Wake-On-LAN (WOL)

support

Key Specifications

? DIF cycle-to-cycle jitter <50ps

? DIF output-to-output skew <50ps

? DIF phase jitter is PCIe Gen1-2-3 compliant

? REF phase jitter is < 3.0ps RMS

Features/Benefits

? LP-HCSL outputs; save 4 resistors compared to standard

PCIe devices

? 23mW typical power consumption; reduced thermal

concerns

? OE# pins; support DIF power management

? Programmable Slew rate for each output; allows tuning for

various line lengths

? Programmable output amplitude; allows tuning for various

application environments

? DIF outputs blocked until PLL is locked; clean system

start-up

? Selectable 0, -0.25 or -0.5 spread on DIF outputs;

reduces EMI

? External 25MHz crystal; supports tight ppm with 0 ppm

synthesis error

? Configuration can be accomplished with strapping pins;

SMBus interface not required for device control

? Selectable SMBus addresses; multiple devices can easily

share an SMBus segment

? 3.3V tolerant SMBus interface works with legacy controllers

? Space saving 24-pin 4x4 mm VFQFPN; minimal board

space