VT98001
Overview
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.
- = 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) Figure
- Functional Block Diagram VDD1 VDD2 VDD3 VDD4 ROM Table 24.576/ 28.224 MHz X2 Buffer osc 27 MHz Crystal Select 24/28 MHz PLL Multiplier X1 Buffer
- 576 MHz MODE 18.432MHz/ 6.000MHz Divider /PD Buffer Buffer Buffer Buffer 2kHz 27 MHz 27 MHz
