General Description

The Vaishali VT98000 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.

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