BIT INTERLEAVED PARITY ARITHMETIC CIRCUIT

摘要

PURPOSE:To reduce number of signal lines, to simplify the circuit constitution and to save number of pins in the case of large scale circuit integration, in the case of digital transmission. CONSTITUTION:A B1 (B3) calculation circuit 10 applies parity arithmetic operation to an 8-bit input signal. A P/S conversion circuit 11 converts the result of 8-bit calculation into a serial signal and a 1-bit parity arithmetic circuit 12 applies parity arithmetic operation to a serial signal whose low-order level is transferred one by one bit. The result of arithmetic operation is transferred one by one bit each and an S/P conversion circuit 13 is used to restore the signal into an 8-bit signal and the result is fetched in a register 14.