Takt- und Datenrückgewinnungsschaltung aus einem N-Pulsamplitudenmodulationssignal

Details

Veröffentlichungs-Nr.

EP4195576

Aktenzeichen

EP21214163

Anmeldetag

13. Dezember 2021

Veröffentlichung

1. Oktober 2025

Erteilung

1. Oktober 2025

Rechtsraum

EP

IPC

H04L7/033H04L25/49

Abstract

An apparatus and a method for recovering clock and data from a multilevel pulse amplitude modulated signal received as input signal (Din) is suggested. The apparatus (500) comprises a phase detector (101), a low-pass filter (102), a voltage-controlled oscillator (103), and a feedback loop forming a CDR loop (107). The voltage-controlled oscillator outputs a clock signal (CKout) that is provided to the phase detector (101). The phase detector receives an MSB signal from a sampler. The apparatus also comprises an interleave circuit (501) configured to receive the input signal (Din) and to generate two output signals (HR1 ,HR2) having a smaller symbol rate than the input signal. The apparatus further comprises a logical gate (508) configured to receive the output signals from the interleave circuit (501) and to generate an enable signal for the phase detector (101) indicating symmetrical transitions in the input signal. Lastly, the apparatus comprises a converter (502) converting the output signals (HR1,HR2) from the interleave circuit (501) into an MSB and an LSB bit stream.

Anmelder

Firmen

IHP GmbH - Leibniz Institute for High Performance Microelectronics/ Leib­niz-Institut für innovative Mikroelektronik
IHP GmbH - Innovations for High Performance Microelectronics / Leibniz-Institut für innovative Mikroelektronik

Land

🇩🇪 Deutschland

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