Okamoto & Benedicto LLP
Apparatus and methods for on-die instrumentation
One embodiment relates to a receiver with both decision feedback equalization and on-die instrumentation. A clock data recovery loop obtains a recovered clock signal from an input signal, and a first sampler, which is triggered by the recovered clock signal, generates a recovered data signal from the input signal. A phase interpolator receives the recovered clock signal and generates a phase-interpolated clock signal. A second sampler is triggered by the recovered clock signal in a decision feedback equalization mode and by the phase-interpolated clock signal in an on-die instrumentation mode. Other embodiments and features are also disclosed.
Altera Corporation
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Jie Peng Thungoc M Weiqi Xiong Sangeeta Yanjing
Shen Li Tran Ding Liu Raman Ke