Method and system for providing fpga device identification via a set of embedded signature registers

Abstract

A programmable integrated circuit ('PIC') device includes configurable logic blocks ('LBs'), routing connections, and configuration memory for performing user defined programmed logic functions. Each configurable LB, in one example, includes a set of lookup tables ('LUTs') and associated registers. The LUTs, for example, are configured to generate one or more output signals in accordance with a set of input signals. The registers are arranged so that each register corresponds to one LUT. In one embodiment, a group of registers, instead of assigning to a group of LUTs across multiple configurable LBs, is allocated or configured as embedded signature registers in PSD. For example, a first register which corresponds or physically situated in the vicinity of first LUT can be designated as an embedded signature register for storing a fixed value or signature information for facilitating device or IC identification.