一种MIPIPHY电路测试系统及其测试方法

By using a built-in excitation MIPI PHY circuit test system, the problems of high cost of MIPI signal generators and test results being affected by external equipment are solved. It realizes low-cost and reliable automatic loopback testing of MIPI PHY circuits, supports HS and LP mode switching, and improves test efficiency.

CN120779206BActive Publication Date: 2026-07-17NANJING GUOZHAO OPTOELECTRONICS TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING GUOZHAO OPTOELECTRONICS TECH CO LTD
Filing Date
2025-06-26
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing MIPI signal generators are expensive and difficult to use, resulting in high testing costs for MIPI PHY circuits and test results that are affected by external conversion chips and connecting cables, making it impossible to accurately test the receiving rate of MIPI PHY circuits.

Method used

The test system employs a fully integrated on-chip MIPI PHY circuit, including a test signal generation module, MIPI PHY circuit, and digital logic judgment and processing circuit. It achieves automatic signal loopback testing through built-in excitation, supports HS and LP mode switching, and simulates actual signal sequences.

Benefits of technology

It reduces testing costs, improves the reliability and efficiency of test results, and enables automatic loopback testing of MIPI PHY circuits without the need for external signal generators or conversion chips.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开了一种MIPI PHY电路测试系统及其测试方法,测试信号产生模块在上位机的控制下向MIPI PHY电路电路输出差分信号,即输出LP_P信号、LP_N信号,或HSSL_P信号和HSSL_N信号;MIPI PHY电路接收差分信号进行回环测试,并向数字逻辑判断和处理电路输出DATA信号、LP_RX_OUT_N信号、LP_RX_OUT_P信号;数字逻辑判断和处理电路向MIPI PHY电路电路反馈HS_RX_EN信号、LP_TX_OUT_N信号、LP_TX_OUT_P信号,同时还进行逻辑判断和处理输出标志位,及控制测试信号产生模块重新输出差分信号,实现芯片内部MIPI PHY信号自动回环测试。
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