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Source code


Name: cavlc
Created: Oct 21, 2011
Updated: Nov 20, 2012
SVN Updated: Nov 4, 2011

Other project properties

Category: Arithmetic core
Language: Verilog
Development status: Beta
Additional info: Design done
WishBone Compliant: No
License: LGPL


This IP implements the CAVLC parsing process in ITU-T H.264 (05/2003)


- Compatible with ITU-T H.264 (05/2003), but it do not calculate nC and store TotalCoeff,
you need to add a nC_decoder outside this core.
- New structure for run_before decoder, the core doesn't save Runs in flip-flops and
doesn't need the run_combine process, this feature reduces both cycle and resource.
- this core has a simple interface
- 9 cycles per cavlc block on average(including P frames)
- Fully synchronous design, Fully synthesisable



Synthesis results

Push-button synthesis results for various targets.
- Cyclone EP3C55F256C6 : 1085 LEs @ 114MHz
- Stratix EP2S15F484C3 : 939 LUTs @ 128MHz
- Virtex XC4V1X200FF1513-10 : 1467 LUTs @ 96MHz