最終更新:2013-04-12 (金) 03:48:09 (4024d)
UTMI+
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UTMI extension supporting USB host and On-The-Go
UTMI+ Overview
- The UTMI+ specification was developed to address increasing demand for embedded host and On-The-Go capabilities in USB devices. UTMI+ is an extension to the original UTMI specification that defines an interface between two IP blocks: the USB Transceiver Macrocell (IP) and the USB Link layer (SIE), and is not intended to be used as an interface between two discrete chips.
- UTMI+ adds host and On-The-Go capabilities to the USB system. Using UTMI as a starting point,
- UTMI+ incrementally adds new functionality and interface signals to the Link and PHY. Designers can reuse all blocks from their original UTMI IP, and need only add the new circuits required for host or On-The-Go support. This approach works well for UTMI+ because USB peripherals need only a subset of host and On-The-Go functionality.
