Invention Grant
US06897678B2 Programmable logic device with circuitry for observing programmable logic circuit signals and for preloading programmable logic circuits
失效
具有用于观察可编程逻辑电路信号和用于预加载可编程逻辑电路的电路的可编程逻辑器件
- Patent Title: Programmable logic device with circuitry for observing programmable logic circuit signals and for preloading programmable logic circuits
- Patent Title (中): 具有用于观察可编程逻辑电路信号和用于预加载可编程逻辑电路的电路的可编程逻辑器件
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Application No.: US10255661Application Date: 2002-09-25
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Publication No.: US06897678B2Publication Date: 2005-05-24
- Inventor: Ketan Zaveri , Christopher F. Lane , Srinivas T. Reddy , Andy L. Lee , Cameron R. McClintock , Bruce B. Pedersen
- Applicant: Ketan Zaveri , Christopher F. Lane , Srinivas T. Reddy , Andy L. Lee , Cameron R. McClintock , Bruce B. Pedersen
- Applicant Address: US CA San Jose
- Assignee: Altera Corporation
- Current Assignee: Altera Corporation
- Current Assignee Address: US CA San Jose
- Agency: Fish & Neave IP Group of Ropes & Gray LLP
- Agent Robert R. Jackson
- Main IPC: G01R31/3185
- IPC: G01R31/3185 ; H03K19/177
Abstract:
A programmable logic device is provided that contains circuitry that may be used for observing logic signals from programmable logic circuits on the device for testing the operation of the device. Circuitry is also provided that may be used for preloading data into various circuits on the device. The logic signal observing circuitry may allow registered signals to be observed, may allow combinatorial signals to be observed, or may allow both registered and combinatorial signals to be observed.
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