ADLINK aTCA-6250 - Manual (Page 75)

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Onboard SAS Oprom
This item allows user to enable or disable SAS option ROM.
Onboard SATA RAID Oprom
This item allows user to enable or disable SATA RAID option ROM.
High Precision Timer
The High Precision Event Timer is a hardware timer used in personal computers. A
High Precision Event Timer chip consists of a 64-bit main counter counting at least at
10MHz and a set of up to 256 comparators. HPET is programmed via a memory
mapped I/O window that is discoverable via ACPI. The HPET circuit in modern PCs is
integrated into the southbridge. The HPET can produce periodic interrupts at a much
higher resolution than the RTC. This option allows user to enable or disable High
Precision Event Timer.
USB Configuration
You can use this screen to specify options for the USB configuration settings. Use
the up and down keys to select an item. Use <+> and <-> keys to change
the value of the selected option. The settings are described in the following pages.
The screen is shown as below.
All USB Devices
This item enables or disables all USB devices.
EHCI Controller 1
This item enables or disables USB 2.0 (EHCI) controller 1.