Multi Function Synchronizing Register
Original Publication Date: 1980-Nov-01
Included in the Prior Art Database: 2005-Feb-14
This arrangement provides for multiple usage of a register for establishing data lock-in, calculating a cyclic redundancy check (CRC) character and detecting CRC failures during data read operations. A significant logic saving is obtained by using the CRC register as a data synchronous lock-in zero-detect mechanism. Adding the proper control lines allows the register to perform direct shifting and detect 16 or 32 adjacent zero bits in the main data stream. This is a critical step in establishing synchronism with the media.