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US 5,635,855 AGranted
Method for simultaneous programming of in-system programmable integrated circuits
AssigneeLattice Semiconductor Corporation
InventorHoward Y. M. Tang
Life of this patent
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Abstract
Multiple in-system programmable devices are connected in series to a programming controller for simultaneous programming. One embodiment puts all such in-system programmable devices in programming mode, and to receive programming data and programming instruction simultaneously. In that configuration, all devices begins programming and stops programming simultaneously.
Claims10
A method for programming multiple field programmable devices, comprising the steps of:
- connecting said field programmable devices serially in a chain configuration;
- constructing a data stream file which represents a composite data stream for programming said field programmable devices;
- retrieving, from a plurality of program data files, an individual programming data stream for each of said field programmable devices;
- filling said data stream file with said individual programming data streams to form said composite data stream;
- retrieving from said data stream file said composite data stream;
- serially shifting said composite data stream into said field programmable devices;
- and
- programming said field programmable devices using said composite data stream.
5 more elements
Dependencies are inferred from the claim text.