Hi,
According to latest AM1808 Errata Sheet currently available (SPRZ313G) there are no issues corrected in Silicon Revision 2.3 compared to 2.1. Section 3.2 "Silicon Revision 2.1 Known Design Exceptions to Functional Specifications" doesn't contain "Silicon Revision 2.1 Advisory List " and states that "Silicon revision 2.1 applicable advisories have been found on a later silicon revision."
At least two points seem doubtful:
1) Advisory 2.1.12 (BOOT: IPU Resistors for BOOT[7:0] Pins Are Sometimes Enabled During Reset...) listed in Silicon Revision 2.3 Advisory List is marked as "2.1 and earlier" at page 27
2) Advisory 2.1.10 (USB0 PLL Mean Frequency Can Drift Across Large Temperature Swings) is also listed in Silicon Revision 2.3 Advisory List. This issue is already corrected in rev 2.3 for e.g. OMAP-L138E and TMS320C6748E.
Is there any difference in functionality and/or characteristics between AM1808E (rev 2.3) and AM1808B (rev 2.1)?
BR,
Denis