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Short Desc. : USB 2.0 Host Controller
Overview :
The USB 2.0 Host Controller core (GRUSBHC) provides a link between the AMBA on-chip bus and the Universal Serial Bus (USB). The host controller supports High-, Full- and Low-Speed USB traffic. USB 2.0 High-Speed functionality is supplied by an enhanced host controller implementing the Enhanced Host Controller Interface (EHCI). Full- and Low-Speed functionality (USB 2.0 and USB 1.1) is supplied by one or more companion controllers implementing the Universal Host Controller Interface (UHCI).
Features : - Compatible with USB Specification Rev. 2.0 and Rev. 1.1
- Supports all USB transfer types
- Supports High- (480 Mbit/s), Full- (12 Mbit/s) and Low-Speed (1.5 Mbit/s) traffic
- Enhanced Host Controller compatible with EHCI rev. 1.0
- Supports Asynchronous Park Mode
- Implements a NAK counter to limit unnecessary memory accesses
- Descriptor and data prefetch prevents buffer overrun and underrun errors
- AMBA AHB 32-bit master interface, APB 32-bit slave interface
- Universal Host Controller compatible with UHCI rev. 1.1
- Extended to report over current conditions
- AMBA AHB master/slave interface
- Flexible configuration of port routing and number of companion controllers
Categories :
Portability :
Type : Soft
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