Research Outline

Understanding USB Standards

Goals

To obtain a not-too-technical high-level review of the latest USB standards with details of what these standards want to solve.

Early Findings

USB

  • USB 3.2 Gen 2x2 is the second generation USB version, coming from USB 3.2 Gen 2. And USB 3.0 is also known as USB 3.2 Gen 1.
  • USB 3.2 Gen 2x2 has twice the speed of USB 3.2 Gen 2 for data transfers, hence the reason for the '2x2' in its name.
  • USB 3.2 Gen 2x2, USB 3.2 Gen 2 and, USB 3.2 Gen 1 are marketed as SuperSpeed USB 20Gbps, SuperSpeed USB 10Gbps and, SuperSpeed USB 5Gbps, respectively; which is their respective transfer rates.
  • These newer versions of USB 3.2 devices are compatible with older devices (providing backward compatibility). However, if there are "two products with different USB capabilities[, it] will operate at the older's transfer speed".
  • USB 3.2 standards now make it possible for the use of two lanes rather than single lanes to transfer data faster, "without sacrificing cable length".
  • They are designed for increased performance, improved data encoding "and improved I/O power efficiency".
  • It is recommended that manufacturers of these three products (i.e. SuperSpeed USB 20Gbps, SuperSpeed USB 10Gbps and, SuperSpeed USB 5Gbps) adhere to the USB-IF Compliance Program by submitting their products to determine compliance and gain access to the USB-IF logo licensing program.

USB PD

  • The USB Power Delivery can charge large devices such as laptops and tablets because its current design allows it to use up to 100 watts.
Prepared By
Careka S.
434 assignments | 5.0