An Effective BIST TPG for Variable Precision Floating Point Multiplier

The accuracy of the multiplication depends on the precision of the multiplier. The variable precision floating point multiplier will have more accuracy when compared with the fixed precision multiplier. In this paper a variable precision floating point multiplier is considered. An effective BIST test pattern generator for variable precision floating point multiplier is proposed. A BIST TPG consists of pseudo random test pattern generator for the variable precision floating point multiplier and a comparator is used to compare the output response and the expected response, a control unit is used for selecting either primary inputs or the test pattern for the variable precision floating point multiplier. The Linear feedback shift registers are used to generate the pseudo random test pattern generation. The LFSR are very much efficient in producing the random test vectors which is used to produce high