Avalue ECM-QB - Manual (Page 43)

ECM-QB User ’s Manual
ECM-QB User ’s Manual 43
3.6.2.5 USB Configuration
The USB configuration menu is used to read USB configuration information and configure
the USB setting.
Item Options Description
Legacy USB Support
Enabled
Disabled
Auto
- Enables Legacy USB support.
- AUTO option disables legacy support
if no USB devices are connected.
- DISABLE option will keep USB
devices available only for EFI
applications
EHCI Hand-off
Disabled
Enabled
This is a workaround for OSes without
hand-off support. The EHCI ownweship
change should be claimed by EHCI driver.
USB transfer time-out
1 sec / 5 sec
10 sec / 20 sec
The time-out value for Control, Bulk, and
Interrupt transfers.
Device reset time-out
10 sec / 20 sec
30 sec / 40 sec
USB mass storage Start Unit Command
time-out
Device power-up delay
Auto
Manual
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 a Hub port the
delay is taken from Hub descriptor.
Device power-up delay in
seconds
1~40seonds
Delay range is 1..40 seconds, in one
second increments