AR# 46511


7 Series FPGA Design Assistant - Using SRLs to conserve resources


This answer record discusses how shift register look-up tables (SRLs) can be used to help conserve resources in fabric.



The SRL primitive can be utilized to reduce resources used in a design. Instead of implementing a shift register using a series of flip-flops, you can implement a shift register in the dedicated performance optimized SRL blocks in fabric. However, in order to utilize an SRL in your design, you must be careful how you use resets.

Resets should not be used on shift registers in your design as this requires additional logic around the SRL block which reduces performance and increases the amount of logic needed to implement the shift register.




AR# 46511
日期 12/15/2012
状态 Active
Type 综合文章
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