DIGITAL CODE RECOVERY WITH PREAMBLE

摘要

A digital code recovery circuit includes a data transmitter that outputs either input data or a preamble code as transmitter data. A radio frequency interconnect (RFI) transmitter modulates carrier signals based on the transmitter data and transmits the modulated carrier signals over a channel to an RFI receiver that demodulates the carrier signals to obtain recovered transmitter data. A calibration storage device stores preamble data and a calibration circuit receives the recovered transmitter data. If the recovered transmitter data originated from the preamble code, the calibration circuit determines a set of digital calibration adjustments from the recovered transmitter data and the preamble data. If the recovered transmitter data originated from the input data, the calibration circuit applies the set of digital calibration adjustments to the recovered transmitter data to obtain adjusted digital code and outputs the adjusted digital code.

主权项

1. A digital code recovery circuit, comprising:
a data transmitter configured to receive input data and a preamble code and to output one or both of the input data and the preamble code as transmitter data; a radio frequency interconnect (RFI) transmitter configured to generate a plurality of modulated carrier signals based on the transmitter data and transmit the plurality of modulated carrier signals over a transmission line; an RFI receiver configured to receive the plurality of modulated carrier signals from the channel, demodulate the plurality of modulated carrier signals to obtain recovered transmitter data, and output the recovered transmitter data; a calibration storage device storing preamble data; and a calibration circuit configured to:
receive the recovered transmitter data;when the recovered transmitter data originated from the preamble code, determine a set of digital calibration adjustments from the recovered transmitter data and the preamble data; andwhen the recovered transmitter data originated from the input data, apply the set of digital calibration adjustments to the recovered transmitter data to obtain adjusted digital code, and output the adjusted digital code.