MK1491-06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 MK1491-06 is a low-cost, low-jitter, high-performance clock synthesizer for AMD's Geode-based computer and portable appliance applications. Using patented analog Phase-Locked Loop (PLL) techniques, the device accepts a 14.318 MHz crystal input to produce multiple output clocks. It provides selectable PCI local bus and AC97 clocks, 24 MHz and 48 MHz clocks for Super I/O and USB, as well as multiple Reference outputs. The device has a power down mode to reduce power consumption.

特性 Features

Packaged in 28-pin SOIC or in 28-pin SSOP
Provides all critical timing for the AMD Geode companion chip
Four PCI clocks
Selectable PCIF on up to 2 outputs
Early PCI clock selectability
Up to four reference clocks
48 MHz USB and 24 MHz SIO support
AC97 audio clock
Multiple power-down modes
Low EMI Enable pin reduces EMI radiation on PCI clocks (patented)
Operating voltage of 3.3 V ±5%
Available in commercial (0 to +70°C) and industrial (-40 to +85°C) temperature ranges