ADLINK cExpress-BL - Manual (Page 57)

cExpress-BL Page 57
7.3.7 Advanced > USB Submenu
Feature Options Description
USB Module Version Info only
USB Devices Info only X Drive, X Keyboards, X Mouse, X Hubs
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 and
setup.
XHCI Hand-off Enabled
Disabled This is a workaround for OSes without XHCI hand-off support. The XHCI
ownership change should be claimed by the XHCI OS driver.
EHCI Hand-off Enabled
Disabled This is a workaround for OSes without EHCI hand-off support. The EHCI
ownership change should be claimed by the EHCI OS driver.
USB Mass Storage Driver Support Enabled
Disabled Enable/Disable USB Mass Storage Driver Support.
PCH USB Configuration Submenu
USB hardware delays and time-outs: Info only
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 device 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 100 ms, for a
Hub port the delay is taken from Hub descriptor.
Mass Storage Devices Info only List current USB max stroge device.
7.3.8 Advanced > USB > PCH USB Configuration
Feature Options Description
USB Precondition Disable
Enable Precondition work on USB host controller and root ports for faster
enumeration.
XHCI Mode Smart Auto
Auto
Enable
Disable
Manial Mode of operation of xHCI controller.
XHCI Idle L1 Enabled
Disabled Enable or disable XHCI Idle L1.\n XhciIdleL1 can be set to disable for LPT-
LP Ax stepping to workaround USB3 hot plug will fail after 1 hot plug
removal.
BTCG Disable
Enable
Enable / Disable trunk clock gating.
USB Ports Per-Port Disable Control Disable
Enable Control each of the USB ports (0~13) disabling.