What's so special about the 25th of May? Well, first off, it's Towel Day, the day two weeks after Hitchhiker's Guide to the Galaxy author Douglas Adams passed in 2001. If you're a hoopy frood, you'll want to keep your towel handy in case you are whisked away on a starship.
Warren Miller, Independent Consultant, 5/22/2013 Comment now
In this blog, I'm going to update my earlier column on SerDes technology. Things are moving so fast in this area, and the area itself is so technically rich, that another miniseries of blog posts seemed appropriate.
In my previous blog relating to functional verification, I discussed the difficulties associated with ensuring complete verification without some form of measured coverage. One of the comments on that article suggested that if you ran an FPGA in the design environment for long enough, then statistically, you were likely to have exercised most of the ...
In one of my earlier columns, we figured out how to use the "okWireOR" module to combine multiple signals going from the XEM board back to the PC. (See: The Opal Kelly FrontPanel: Using Multiple WireOuts.)
Good grief. I am shocked and horrified. Someone is treading on our turf, as it were. What am I waffling on about? Well, I was just casting my orbs over one of All Programmable Planet's sister sites -- Planet Analog. As you doubtlessly know, Planet Analog is ruled by that international man of mystery, Brad Albing, he of the iron fist in the velvet glove ...
As always, this week's All Programmable Planet (APP) live online chat -- which will be held on Thursday, May 23 -- promises to be a rip-roaring, fun-filled, roller-coaster thrill ride of thrust-and-parry ideas. (Only thrill seekers need apply.)
Have you ever noticed how sometimes there seems to be an ebb and flow to the things that are happening around us? For example, it seems to me that more "wise words"-type items have been passing in front of my eyes recently than is usually the case.
When we left Part 6 of this epic mini-series, we had just completed the generation of the bit file containing the XADC (Xilinx Analog-to-Digital Convertor) along with the original GPIO (General-Purpose Input/Output) connected to the LEDs and the processor system.
It is often the case that printed circuit boards (PCBs) and the components mounted on them, including the occasional FPGA, will be thermal cycled over a great temperature range several times a day, even when in operation.
In Part 1 of this mini-series we considered a three-state (tri-state) scenario in the context of an input buffer. In Part 2 we progressed to a tri-state output buffer. Now, in this column we will consider the tri-state concept in the context of the legendary bi-directional buffer, but first...