| 摘要 |
A dual mode decoder is provided. The dual mode decoder includes an MB810 decoder; an 8B/10B decoder; a mode detection unit which detects a decoder to be used as an operation decoder between the MB810 decoder and the 8B/10B decoder; a first low pass filter which when the MB810 decoder is determined as the operation decoder, removes a predetermined frequency bandwidth from a 10-bit code input from the outside; a second low pass filter which when the 8B/10B decoder is determined as the operation decoder, removes a predetermined frequency bandwidth from a 10-bit code input from the outside; an IDLE code detection unit which detects IDLE code from the 10-bit code and transfers to the mode detection unit; a first switch unit which according to the decoder determined as the operation decoder, selectively outputs the 10-bit code input from the first low pass filter and the second low pass filter; a parallel conversion unit which converts the 10-bit code input from the first switch into a parallel code and outputs a 10-bit parallel code; a first selection unit which provides the 10-bit parallel code to the decoder determined as the operation decoder between the MB810 decoder and the 8B/10B decoder; and a second selection unit which selectively outputs an 8-bit code corresponding to the 10-bit parallel code input from the decoder determined as the operation decoder.
|
