发明名称 |
COMMUNICATION TESTING CIRCUIT, ELECTRONIC DEVICE, RECEIVING CIRCUIT, TRANSMITTING CIRCUIT, SEMICONDUCTOR INTEGRATED CIRCUIT, AND WAFER |
摘要 |
Provided is a communication testing circuit that includes a transmitting unit including a spread spectrum clock generator that generates a modulated clock signal by modulating a reference clock signal, a pseudo-random binary sequence generator that generates a pseudo-random pattern, and a signal generator that generates a transmission signal by modulating the pseudo-random pattern based on the modulated clock signal, a receiving unit including a clock and data recovery circuit that receives the transmission signal and recovers the pseudo-random pattern from the transmission signal, and a detector that compares the recovered pseudo-random pattern with a preset pseudo-random pattern and outputs a signal indicating error information, and a control unit that counts a number of errors from the signal indicating error information input from the receiving unit and decides a timing margin based on a counting result.
|
申请公布号 |
US2011299569(A1) |
申请公布日期 |
2011.12.08 |
申请号 |
US201113116060 |
申请日期 |
2011.05.26 |
申请人 |
BABA MITSUO;RENESAS ELECTRONICS CORPORATION |
发明人 |
BABA MITSUO |
分类号 |
H04B1/69 |
主分类号 |
H04B1/69 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|