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Chapter 3
Hardware
LittleBoard 550
Reference Manual
49
Table 3-17. SMBus Reserved Addresses
Component
Address Binary
Serial EEPROM (SEEP)
1010,010x
b
SDRAM EPROM
1010,000x
b
Clock Generator (ICS9250)
1101,001x
b
Southbridge (VT82C686B)
0000,000x
b
(default) Programmable Master
Thermal Sensor (MAX1617)
0011,0010x
b
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.
Summary of Contents for LittleBoard 550
Page 1: ...LittleBoard 550 Single Board Computer Reference Manual P N 5001740A Revision A...
Page 26: ...Chapter 2 Product Overview 20 Reference Manual LittleBoard 550...
Page 68: ...Chapter 3 Hardware 62 Reference Manual LittleBoard 550...
Page 88: ...Appendix A Technical Support 82 Reference Manual LittleBoard 550...
Page 90: ...Appendix B Connector Part Numbers 84 Reference Manual LittleBoard 550...
Page 98: ...Index 92 Reference Manual LittleBoard 550...
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