You've measured the jitter, now how do you fix it?
While making accurate measurements is important, you need to identify the root causes of jitter problems before you can minimize them. Keys to success include understanding how to best use your jitter analysis tool, plus how jitter propagates in a communications system. Find out more here !

core    

STM Free Microprocessor
STM is a 32-bit, 2-way superscalar RISC processor, designed in an HDL. It is a free hardware; get the source from here.
preview: http://www.asahi-net.or.jp  

tutorial    

FPGA Insiders' Guide
Interested in FPGAs? FPGA makers like Xilinx or Altera, as well as board level providers and tools companies. FPGAs can be heaven or hell. This Insiders' Guide overviews the FPGA ecosystem, has survey results from real users, and interviews with leading vendors to help you figure out how to use FPGAs, boards, or tools to get your design done.
preview: http://www.fpga-report.org