Patent ID: 8194723

Claim:
A test apparatus for a 64B/66B encoding process, the apparatus comprising: a frame generator for generating frame data in a layer higher than a physical coding sublayer of Ethernet; a 64B/66B encoder for performing a 64B/66B encoding process of the frame data in the physical coding sublayer and generating encoded 66B data; a sequence pattern generator for generating a 66B sequence pattern; a data selector for selecting either the 66B data encoded by the 64B/66B encoder or the 66B sequence pattern output from the sequence pattern generator and providing the selected one to a test subject; and further comprising a 66B data storage for storing 66B data, which satisfy a predetermined condition, among externally input 66B data, wherein the controller generates the 66B sequence pattern based on the 66B data stored in the 66B data storage and writes the generated 66B sequence pattern in the sequence pattern generator.