Precision oscillator for an asynchronous transmission system

Details Precision oscillator for an asynchronous transmission system Precision oscillator for an asynchronous transmission system

2008-07-01

2011-11-08

Zaman, Faisal M (Department: 2111)

Electrical computers and digital processing systems: support

Clock control of data processing system, component, or data...

C713S400000, C713S500000

Reexamination Certificate

active

08055932

ABSTRACT:
A precision oscillator for an asynchronous transmission system. An integrated system on a chip with serial asynchronous communication capabilities includes processing circuitry for performing predefined digital processing functions on the chip and having an associated on chip free running clock circuit for generating a temperature compensated clock. An on-chip UART is provided for digitally communicating with an off-chip UART, which off-chip UART has an independent time reference, which communication between the on-chip UART and the off-chip UART is effected without clock recovery. The on-chip UART has a time-base derived from the temperature compensated clock. The temperature compensated clock provides a time reference for both the processing circuitry and the on-chip UART.

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