General Description

The Vaishali VT98001 is a single-chip, integrated multiple Phase Locked Loop (PLL) clock synthesizer. The device uses an analog Phase Locked Loop (PLL) to accept a 27 MHz crystal input to produce multiple outputs. Selection pins are used to provide various outputs.

特性 Features

? 24.576 MHz for Firewire IEEE1394 or video

digitizer

? 24.576 MHz / 28.224 MHz for software or

hardware modem

? 27 MHz buffered output clock

? 6.000MHz buffered output clock

? 18.432 MHz for audio processor

? 2kHz standby clock

? Zero ppm synthesis error in all clocks

(except the 2 kHz standby clock)

? 5V tolerant inputs

? 20-pin, 150 mil SSOP (QSOP)

Applications

? Set-top boxes

? MPEG Video clock source