Fortec Elektronik SOM-6867, Manual

Page: 44 / 82

33 SOM-6867 User Manual
Chapter 3
B
IOS
3.3.12 USB Configuration
Figure 3.23 USB Configuration

LegacyUSB Support
This item allows users to enable or disable LegacyUSB Support.

XHCI Hand-off
This is a workaround for OS without XHCI hand-off support.
The XHCI ownership change should be claimed by XHCI driver.

EHCI hand-off
This is a workaround for OS without EHCI hand-off support.
The EHCI ownership change should be claimed by EHCI driver.

USB Mass Storage Driver Support
This item allows users to enable or disableUSB Mass Storage Driver Support.

USB transfer time-out
The time-out value for Control, Bulk, and Interrupt transfers.

Device reset time-out
USB mass storage device Start Unit command time-out.

Device power-up delay
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, for 1 Hub port
the delay is taken from Hub descriptor.