Analog to digital signal conditioning in optoelectronic transceivers
First Claim
1. Circuitry for monitoring the operation of an optoelectronic transceiver, said circuitry comprising:
- a sequence of interconnected signal processing circuits for processing an analog input signal and producing a digital result signal, where said analog signal represents one or more operating conditions of the optoelectronic transceiver, said sequence of signal processing circuits including;
gain circuitry configured to amplify or attenuate said analog input signal by a gain value to produce a scaled analog signal;
an analog to digital converter configured to convert said scaled analog signal into a first digital signal;
digital adjustment circuitry for digitally adjusting said first digital signal to produce said digital result signal, said digital adjustment circuitry including shifting circuitry configured to shift an input digital signal in accordance with a shift value so as to produce a digital shifted signal; and
memory configured to store values of said digital result signal in predefined locations accessible by a host.
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Abstract
Circuitry for monitoring the operation of an optoelectronic transceiver includes a sequence of interconnected signal processing circuits for processing an analog input signal and producing a digital result signal, where the analog signal represents one or more operating conditions of the optoelectronic transceiver. The sequence of signal processing circuits include gain circuitry for amplifying or attenuating the analog input signal by a gain value to produce a scaled analog signal, an analog to digital converter for converting the scaled analog signal into a first digital signal, and digital adjustment circuitry for digitally adjusting the first digital signal to produce the digital result signal. The digital adjustment circuitry includes shifting circuitry configured to shift an input digital signal in accordance with a shift value so as to produce a digital shifted signal. The digital result signal is stored in memory in predefined locations accessible by a host.
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Citations
19 Claims
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1. Circuitry for monitoring the operation of an optoelectronic transceiver, said circuitry comprising:
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a sequence of interconnected signal processing circuits for processing an analog input signal and producing a digital result signal, where said analog signal represents one or more operating conditions of the optoelectronic transceiver, said sequence of signal processing circuits including;
gain circuitry configured to amplify or attenuate said analog input signal by a gain value to produce a scaled analog signal;
an analog to digital converter configured to convert said scaled analog signal into a first digital signal;
digital adjustment circuitry for digitally adjusting said first digital signal to produce said digital result signal, said digital adjustment circuitry including shifting circuitry configured to shift an input digital signal in accordance with a shift value so as to produce a digital shifted signal; and
memory configured to store values of said digital result signal in predefined locations accessible by a host. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of monitoring an optoelectronic device, comprising:
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receiving a plurality of analog signals from the optoelectronic device, the analog signals corresponding to operating conditions of the optoelectronic device, converting the received analog signals into digital result values, and storing said digital result values in predefined locations within a memory;
wherein the converting includes;
amplifying or attenuating said analog signals by respective gain values to produce scaled analog signals;
converting said scaled analog signals into first digital signals;
digitally adjusting said first digital signals to produce said digital result values, including shifting input digital signals in accordance with a shift value so as to produce digital shifted signals. - View Dependent Claims (17, 18, 19)
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Specification