Introduction
ROBO-603 User’s Manual
1-9
1.4.6
IDE Interface (Bus Master Capability and Synchronous DMA Mode)
Master mode enhanced IDE controller with dual channel DMA engine and interlaced dual channel
commands. Dedicated FIFO coupled with scatter and gather master mode operation allows high
performance transfers between PCI and IDE devices. In addition to standard PIO and DMA mode
operation, the VT82C686A also supports the UltraDMA-33 standard to allow reliable data transfer
rates up to 33MB/sec throughput. The VT82C686A also supports the UltraDMA-66 standard. The
IDE controller is SFF-8038i v1.0 and Microsoft Windows-family compliant.
Access to these controllers is provided by one standard IDC 40-pin connector and one Compact
Flash type II connector.
1.4.7 USB
The Universal Serial Bus controller is USB v1.1 and Universal HCI v1.1 compliant. The
VT82C686A includes the root hub with four function ports with integrated physical layer
transceivers. The USB controller allows hot plug and play and isochronous peripherals to be
inserted into the system with universal driver support. The controller also implements legacy
keyboard and mouse support so that legacy software can run transparently in a non-USB-aware
operating system environment.
