公开(公告)号：US11238204B1

公开(公告)日：2022-02-01

申请号：US17066284

申请日：2020-10-08

Applicant: Cadence Design Systems, Inc.

Inventor： Scott David Huss ,  Loren B. Reiss ,  Fred Staples Stivers ,  Steven Martin Broome

IPC: G06F30/30 ,  G01R31/317 ,  G01R31/3183 ,  G01R31/3187 ,  G06F30/333

Abstract: Various embodiments provide for testing a transmitter with interpolation, which can be used with a circuit for data communications, such as serializer/deserializer (SerDes) communications. In particular, some embodiments provide for data transmission test of a transmitter by: generating and outputting a pre-determined data pattern through a serializer of the transmitter; sampling a serialized data output of the serializer over a plurality of different interpolation phase positions of a phase interpolator; and using a pattern checker to error check the sampled data over the plurality of different interpolation phase positions to determine whether the data transmission test passes.