Operation

Table 5-10 IGD-LCD Control (continued)

Field

Description

 

 

LCD Mode

Set LCD Mode as PWM Mode or DC Mode.

 

Default value is PWM Mode.

Table 5-11 USB Configuration

Field

Description

 

 

USB Devices

List of the USB devices attached.

 

 

Legacy USB Support

Enables Legacy USB support. AUTO option disables legacy support if no

 

USB devices are connected. DISABLE option keeps USB devices available

 

only for EFI applications. Default value is Enabled.

EHCI Hand-off

This is a workaround for OSs without EHCI hand-off support. The EHCI

 

ownership change should be claimed by EHCI driver. Default value is

 

Enabled.

Device Reset Timeout

USB mass storage device Start Unit command timeout. The options are:

 

z

10 sec

 

z

20 sec

 

z

30 sec

 

z

40 sec

 

Default value is 20 sec.

Controller Timeout

The time out value for control, bulk, and interrupt transfer. The options

 

are:

 

 

z

1sec

 

z

5 sec

 

z

10 sec

 

z

20 sec

 

z

30 sec

 

Default value is 20 sec.

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MITX-430/MITX-440-DVI-2E Installation and Use Guide (6806800K37B)

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Emerson MITX-440-DVI-2E, MITX-430 manual USB Configuration, Ehci Hand-off