发明名称 |
Adder-based base cell for field programmable gate arrays |
摘要 |
An adder-based base cell (10) is provided for field programmable gate arrays. The base cell (10) includes a first inverter (13) operable to receive a first input signal (A). A first NAND gate (12) is coupled to the first inverter (13) and is operable to receive a second input signal (B). A first 2:1 multiplexer (14) is coupled to the first NAND gate (12) and is operable to receive a third input signal (C). The output of the first 2:1 multiplexer (14) represents a first function (F1). A second inverter (17) is operable to receive a fourth input signal (D). A second NAND gate (16) is coupled to the second inverter (17) and is operable to receive a fifth input signal (E). An XOR gate (18) is coupled to the second NAND gate (16), is operable to receive a sixth input signal (F), and is coupled to the first 2:1 multiplexer (14). The output of the XOR gate represents a partial sum function (PS-1). A second 2:1 multiplexer (19) is operable to receive a seventh input signal (G), is operable to receive an eighth input signal (H) and is coupled to the XOR gate (18). The output of the second 2:1 multiplexer (19) represents a second function (F2).
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申请公布号 |
US5488315(A) |
申请公布日期 |
1996.01.30 |
申请号 |
US19950369060 |
申请日期 |
1995.01.05 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
MAHANT-SHETTI, SHIVALING S.;AGARWALA, MANISHA;MEHENDALE, MAHESH M.;LANDERS, ROBERT J.;HARWARD, MARK G. |
分类号 |
G06F7/50;G06F7/501;H03K19/173;(IPC1-7):H03K19/173;H03K19/177 |
主分类号 |
G06F7/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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