发明名称 |
Integrated circuit with pin-selectable mode of operation and level-shift functionality and related apparatus, system, and method |
摘要 |
An apparatus includes a digital interface circuit configured to provide a digital interface. The digital interface is configurable based on a mode of operation of the digital interface circuit. The apparatus also includes input and output level-shift circuits. The input level-shift circuit is configured to shift a voltage level of an input signal for the digital interface circuit. The output level-shift circuit is configured to shift a voltage level of an output signal from the digital interface circuit. The input level-shifting and the output level-shifting are based on first and second level-shift input voltages. The apparatus further includes a mode detector configured to identify at least two modes of operation for the digital interface circuit based on the first and second level-shift input voltages. For example, the digital interface circuit could be configured to function as a serial or parallel interface depending on which level-shift input voltage is greater.
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申请公布号 |
US7714612(B1) |
申请公布日期 |
2010.05.11 |
申请号 |
US20080287971 |
申请日期 |
2008.10.15 |
申请人 |
NATIONAL SEMICONDUCTOR CORPORATION |
发明人 |
PERTIJS MICHIEL ANTONIUS PETRUS |
分类号 |
H03K19/0175 |
主分类号 |
H03K19/0175 |
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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