| 摘要 |
<p>PURPOSE:To reduce noise in the internal bus of ASIC. CONSTITUTION:A microprogram control part 20 which generates a microaddress, synchronizes a corresponding microcode with a system clock and outputs it, a register arithmetic part 30 which selects data from plural data sources, operates it and outputs the operation result and plural modules M1, M2,..., MN which are controlled from the microprogram control part 20 with the arithmetic part 30 are provided in a specified usage integrated circuit 1, which is provided with a multiplexer 34 which changes-over the operation output or fixed value data of the register arithmetic part 30 by a signal from the microprogram control part 20 so as to supply it to the plural modules M1, M2,..., MN. Thus, the generation of ringing noise, crosstalk noise, etc., is reduced.</p> |
