发明名称 |
FPGA with a plurality of I/O voltage levels |
摘要 |
The invention comprises an FPGA having a plurality of input reference voltages and/or output voltage supplies. In one embodiment, two or more differential amplifiers in the same configurable input buffer use different input reference voltages. According to a second aspect of the invention, the I/O pad line is configurably connected to the input reference voltage line, so that any configurable Input/Output Block (IOB) can be used to supply the input reference voltage. According to a third aspect of the invention, the reference input of an I/O is configurably connected to any of two or more input reference voltage lines. According to another aspect of the invention, a single input reference voltage and/or a single output voltage supply is applied to each IOB, with the IOBs grouped into sets. Each set of IOBs has a separate input reference voltage and/or a separate output voltage supply.
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申请公布号 |
US6049227(A) |
申请公布日期 |
2000.04.11 |
申请号 |
US19980187666 |
申请日期 |
1998.11.05 |
申请人 |
XILINX, INC. |
发明人 |
GOETTING, F. ERICH;FRAKE, SCOTT O.;KONDAPALLI, VENU M.;YOUNG, STEVEN P. |
分类号 |
G06F7/38;H03K19/003;H03K19/094;H03K19/177;(IPC1-7):H03K19/017;H03K19/082 |
主分类号 |
G06F7/38 |
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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