Principles of Timing in FPGAs

This book provides little information and I found the quality to be lacking. This book is a small size, has only 137 pages of text and the pages contain little content because of the large letter type and big margins. So, beware that you don't get much for your money. Also, the text is hard to read as 'articles' before nouns are dropped more often than not, meaning that you have to mentally fill them in just to be able to read the sentences. Technically however, the contents are ok, so there is some value in it. However, I recommend to first read "Constraining Designs for Synthesis and Timing Analysis", which covers much of the contents of "Principles of Timing in FPGA's".