DIVIDER FAULT DETECTION CIRCUIT AND DIVIDER FAULT DETECTION METHOD USED FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a divider fault detection circuit capable of reducing a hardware amount for division check and checking the entire divider.;SOLUTION: A modulo 3 result 204 generated in a modulo 3 generation circuit 11 of a quotient from a rounding processing result by a rounding circuit 12 and a rounding addition circuit 13, and the module 3 result 202 of a divisor obtained in the modulo 3 generation circuit 4 for the divisor are multiplied in the modulo 3 generation circuit 5 of a product, and the result and the modulo 3 result 203 of a partial remainder obtained in a partial remainder modulo 3 generation circuit 14 are added in the modulo 3 generation circuit 6 of a sum. An added modulo 3 result 206 is compared with the modulo 3 result 201 of a dividend generated beforehand in the modulo 3 generation circuit 3 for the dividend in a comparator circuit 7, and whether or not a fault is present in a quotient generation part 10, the rounding circuit 12 and the rounding addition circuit 13 is judged.;COPYRIGHT: (C)2003,JPO