thumb|right|Shift register lookup table
A '''shift register lookup table''', also '''shift register LUT''' or '''SRL''', refers to a component in digital circuitry. It is essentially a shift register of variable length. The length of SRL is set by driving address pins high or low and can be changed dynamically, if necessary.<ref>{{Cite web |date=2010-05-21 |title=SRL16 |url=http://www.xilinx.com/itp/xilinx7/books/data/docs/lib/lib0368_354.html |archive-url=https://web.archive.org/web/20100521101057/http://www.xilinx.com/itp/xilinx7/books/data/docs/lib/lib0368_354.html |archive-date=2010-05-21 |access-date= |website=www.xilinx.com}}</ref>
The SRL component is used in FPGA devices. The SRL can be used as a programmable delay element.
==See also== *Lookup table *Shift register
==References== <ref>{{Cite web |title=Using Look-Up Tables as Shift Registers (SRL16) in Spartan-3 Generation FPGAs |url=http://www.xilinx.com/support/documentation/application_notes/xapp465.pdf |website=www.xilinx.com}} </ref> {{Reflist}}
Category:Digital electronics Category:Electronic engineering Category:Digital systems Category:Logic gates Category:Computer memory Category:Digital registers
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