Content by Christian Légaré
Christian Légaré
Member Since: October 17, 2012
Blog Posts: 5
Posts: 73

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Nov 30 - Day 5: USB From the Host Side
Continuing Education Center 
11/30/2012  218 comments
Day 5 begins with a discussion of USB hosts, which are the most complex component in USB technology. We then are able to draw the differences between device, host, and on-the-go USB software stacks. The memory footprint for typical hosts and devices is described. Finally, the requirements for USB compliance are explained.
Nov 29 - Day 4: USB From the Device Side
Continuing Education Center 
11/29/2012  238 comments
Day 4 is all about USB devices -- what they are, and what they can be. When a USB device is first connected to the bus, it triggers a process called enumeration. This event is a crucial phase of the USB protocol. USB classes are also presented, which allow USB devices to take on multiple functions.
Nov 28 - Day 3: Understanding the USB Protocol
Continuing Education Center 
11/28/2012  276 comments
Day 3 presents the complex structure of the USB protocol, which operates above the basic level of transmission and reception of bits over copper wires. Discussed are the concepts of USB packets, transfers, transactions, frames, and endpoints. These concepts are essential to meet performance expectations.
Nov 27 - Day 2: USB Over a Single Wire Pair
Continuing Education Center 
11/27/2012  263 comments
Day 2 presents the methods and circuitry used in USB 1.1 and USB 2.0 to transmit and receive data over a single wire pair. The methods for USB 3.0 are also presented. The physical layer is examined. For compliance purposes, it is often sufficient to follow the semiconductor vendor reference designs.
Nov 26 - Day 1: Implementing USB in Embedded Products
Continuing Education Center 
11/26/2012  295 comments
Day 1 begins with a discussion about implementing USB technology in embedded products. This task can be challenging because of the restricted hardware resources available in embedded systems. USB topology is presented, which is a determining factor in what you can and cannot do with this technology. Finally, the mechanical specifications of USB are described.

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