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61. 发明申请

WO1997014090A1 STRUCTURE AND METHOD FOR SIGNED MULTIPLICATION USING LARGE MULTIPLIER HAVING TWO EMBEDDED SIGNED MULTIPLERS 审中-公开
标题翻译：使用具有两个嵌入式多路复用器的大型多路复用器进行签名多路复用的结构和方法
公开(公告)号：WO1997014090A1
公开(公告)日：1997-04-17
申请号：PCT/US1996015781
申请日：1996-10-09
申请人： CHROMATIC RESEARCH, INC.
发明人： CHROMATIC RESEARCH, INC. , PURCELL, Stephen, C.
IPC分类号： G06F07/52
CPC分类号： G06F7/5324 , G06F7/49994 , G06F7/5338 , G06F2207/3828
摘要： A signed multiplier circuit (200) performs selectable multiplication operations on a first word having an upper byte and a lower byte and a second word having an upper byte and a lower byte. A first multiplier means (231, 232) generates a first product representative of the product of the upper bytes of the first and second words plus the product of the lower bytes of the first and second words. A second multiplier means (230, 233) generates a second product representative of the product of the upper byte of the first word and the lower byte of the second word plus the product of the lower byte of the first word and the upper byte of the second word. The second multiplier means (230, 233) can be selectively disabled. When the second multiplier means (230, 233) is enabled, the multiplier circuit (200) multiplies the first and second words. When the second multiplier means (230, 233) is disabled, the multiplier circuit (200) multiplies the upper bytes of the first and second words and the lower bytes of the first and second words.
摘要翻译：符号乘法器电路（200）对具有高字节和低字节的第一字执行可选乘法运算，而第二字具有高字节和低字节。第一乘法器装置（231,232）生成代表第一和第二字的高字节乘积与第一和第二字的较低字节乘积的乘积的第一乘积。第二乘法器装置（230,233）产生代表第一个字的高字节和第二个字的低字节与第一个字的低字节和第一个字的高字节的乘积的乘积的第二乘积第二个字。可以选择性地禁用第二乘法器装置（230,233）。当第二乘法器装置（230,233）被使能时，乘法器电路（200）将第一和第二单词相乘。当第二乘法器装置（230,233）被禁用时，乘法器电路（200）将第一和第二字的高字节和第一和第二字的低字节相乘。

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