Ampro Corporation Littleboard 550 manual USB Signals USB0 and USB1, Component Address Binary

Chapter 3			Hardware
Table 3-17. SMBus Reserved Addresses
	Component	Address Binary
	Serial EEPROM (SEEP)	1010,010xb
	SDRAM EPROM	1010,000xb
	Clock Generator (ICS9250)	1101,001xb
	Southbridge (VT82C686B)	0000,000xb (default) Programmable Master
	Thermal Sensor (MAX1617)	0011,0010xb

USB Signals (USB0 and USB1)

The LittleBoard 550 contains one root USB hub with four functional USB ports. This connector (Utility 2) provides two of the four USB ports (USB0 and USB1). The hub is USB v.1.1 and Intel Universal HCI v.1.1 compatible.

Features implemented in the USB ports include the following:

•One root hub and two USB ports on this connector

•USB v.1.1 and Intel Universal HCI v.1.1 compatible

•Integrated physical layer transceivers

•Over-current detection status (software) on all four USB ports

•Over-current fuses for all four ports on the LittleBoard 550 board. See Table 2-3.

NOTE	Ampro does not recommend connecting a USB boot device to the
	LittleBoard 550 through an external hub. Instead, connect the USB
	boot device directly to the LittleBoard 550. Refer to Chapter 4, BIOS
	Setup for more information.

LittleBoard 550 Reference Manual 49