Receiving apparatus and method that detect reception of serial data having a plurality of blocks

Abstract

Exemplary receiving apparatus receives serial data that includes contiguous blocks each having M-bit known pattern. The apparatus includes a serial-parallel conversion circuit that arranges bits in the serial data to generates N-bit wide (N<M) parallel data, a register group including a first register that stores a word of the parallel data and second registers to which the word of the parallel data is sequentially shifted and stored, a comparing circuit that compares the known pattern with storage patterns each including M contiguous bits stored in the register group, and a detecting circuit. The detecting circuit detects reception of the serial data if the comparing circuit detects a first match between the known pattern and a first one of the storage patterns, and a second match between the known pattern and a second one of the storage patterns that starts with a specific bit during a specific clock cycle.