IBASE Technology MI836F, Руководство пользователя

Страница: 64 / 81

56
MI836F User’s Manual
4.4.9 USB Configuration
BIOS Setting Description
Legacy USB Support
Enables Legacy USB support.
Auto disables legacy support if there is no USB
device connected. Disable keeps USB devices
available only for EFI applications.
XHCI Hand-off
This is a workaround for OSes without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
USB Mass Storage
Driver Support Enables / Disables the support for USB mass
storage driver.
USB Transfer
time-out The time-out value for control, bulk, and Interrupt
transfers. Options: 1 sec / 5 sec / 10 sec / 20 sec
Device reset time-out
Seconds of delaying execution of start unit
command to USB mass storage device.
Options: 10 sec / 20 sec / 30 sec / 40 sec
Device power-up
delay
The maximum time the device will take before it
properly reports itself to the Host Controller.
Auto uses default value for a Root port it is
100ms. But for a Hub port, the delay is taken from
Hub descriptor. Options: Auto / Manual
USB DISK 3.0 PMAP
Mass storage device emulation type. AUTO
enumerates devices according to their media
format. Optical drives are emulated as CDROM
drives with no medial will be emulated according
to a drive type.