公开(公告)号：US20020053015A1

公开(公告)日：2002-05-02

申请号：US09906021

申请日：2001-07-13

Applicant: Sony Corporation and Sony Electronics Inc.

Inventor： Yew-Koon Tan ,  Agee Ozeki ,  Tetsuya Fukushima

IPC: G06F009/00

CPC classification number: G06F9/30029 ,  G06F9/30018 ,  G06F9/30032 ,  G06F9/345 ,  G06F9/355

Abstract: A digital signal processor particularly adapted for decoding digital audio. The barrel shifter of the processor includes logical circuitry, so that operations involving a combination of a logical operation and a shift, can be performed in a single pass through the combined barrel shifter/logical unit, rather than requiring separate passes through the barrel shifter and ALU, which would require more instruction cycles. The address generator of the processor, includes circuitry which concatenates the most significant bits of a base address of a table to the least significant bits of an index, to thereby rapidly generate addresses of indexed locations in a table.

Abstract translation: 特别适合于解码数字音频的数字信号处理器。 处理器的桶形移位器包括逻辑电路，使得涉及逻辑运算和移位的组合的操作可以在通过组合桶形移位器/逻辑单元的单次传递中执行，而不需要单独通过桶形移位器和 ALU，这将需要更多的指令周期。 处理器的地址生成器包括将表的基地址的最高有效位连接到索引的最低有效位的电路，从而快速地生成表中的索引位置的地址。