US 12,407,548 B2
Signal processing method and device for a memory system interface circuit
Qiuyan Zu, Jiangsu (CN); Chunlai Sun, Jiangsu (CN); Gang Yan, Jiangsu (CN); Yong Wang, Jiangsu (CN); and Wuguang Wang, Jiangsu (CN)
Assigned to MONTAGE TECHNOLOGY (KUNSHAN) CO., LTD., Jiangsu (CN)
Appl. No. 18/696,350
Filed by MONTAGE TECHNOLOGY (KUNSHAN) CO., LTD., Jiangsu (CN)
PCT Filed Mar. 16, 2023, PCT No. PCT/CN2023/081920
§ 371(c)(1), (2) Date Mar. 27, 2024,
PCT Pub. No. WO2023/193588, PCT Pub. Date Oct. 12, 2023.
Claims priority of application No. 202210352335.4 (CN), filed on Apr. 4, 2022.
Prior Publication US 2024/0396768 A1, Nov. 28, 2024
Int. Cl. H04L 25/03 (2006.01)
CPC H04L 25/03057 (2013.01) [H04L 2025/03636 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A signal processing method for a memory system interface circuit, wherein the memory system interface circuit comprises at least two signal pins each being configured to receive a transmission signal via an individual signal link and to generate a received signal at a receiver of the signal link, and wherein the signal processing method comprises:
pre-processing a received signal generated at a receiver of a target signal link for a target signal pin, to obtain an input signal, wherein the target signal pin is one of the at least two signal pins;
removing a weighted feedback signal from the input signal to obtain an output signal, wherein the weighted feedback signal is provided by a finite impulse response (FIR) filter in a feedback path;
deciding on the output signal based on a predetermined base signal to generate a digital output signal;
generating an interference digital output signal associated with a crosstalk aggressor link, wherein the crosstalk aggressor link is a signal link adjacent to the target signal link and corresponds to another of the at least two signal pins, and transmission characteristics of the crosstalk aggressor link interferes with the target signal link and generates inter-symbol interference (ISI) in the received signal;
weighting, on a scale of a filter coefficient matrix of the FIR filter, the interference digital output signal to obtain the weighted feedback signal;
comparing the output signal with a reference signal to generate an error signal; and
determining a set of optimal filter coefficients of the filter coefficient matrix of the FIR filter according to correlation between the interference digital output signal and the error signal, and determining the reference signal according to correlation between the digital output signal and the error signal, to at least partially reduce inter-symbol interference of the received signal introduced by the transmission characteristics of the crosstalk aggressor link.