The VT6212 / VT6212L USB 2.0 UHCI and EHCI Host Controller for the PCI 2.2 Bus provides higher bandwidth (480 Mbps) and is backward compatible with USB 1.1. It implements Universal Serial Bus Specification Revision 2.0 and is compliant with UHCI 1.1 and EHCI 1.0 with a 32-bit PCI host bus interface. The VT6212 / VT6212L adopts 4 DMA engines with pipelined control for USB data transfer bandwidth improvement and dynamic clock stop control for power consumption reduction.
The VT6212 / VT6212L supports 4 downstream facing ports with 1.5 (low-speed), 12 (full-speed) and 480 (high-speed) Mbps transaction capability. The Root Hub is integrated with physical-layer transceivers shared by UHCI (for full/low-speed) and EHCI (for high-speed) Host Controllers. The VT6212 / VT6212L also supports PCI-Bus Power Management Interface Specification 1.1 and has legacy support for all downstream facing ports.
The VT6212 / VT6212L is ready to provide a PCI 4-port USB2.0 peripheral-interface to satisfy the needs of desktops, mobile systems, and other host platforms. Support for the VT6212 / VT6212L is built into Microsoft Windows XP and Windows 2000. Win98SE and WinME drivers are provided by VIA
