Usb Port Configuration For Boards With The Smsc Lpc47M142 I/O Controller - Intel D845HV Technical Product Specification

Intel Desktop Board D845HV/D845WN Technical Product Specification
1.8.2.1 USB Configuration for Boards with the SMSC LPC47M142 I/O Controller
The D845HV/D845WN boards support up to seven USB ports, as shown in Figure 5. The ICH2
provides three external ports: two ports are implemented with stacked back panel connectors and
the other port is accessible through a CNR add-in card. The SMSC LPC47M142 I/O controller
provides four external ports: two ports implemented with stacked back panel connectors and two
ports routed to the front panel USB connector.
For more than seven USB devices, an external hub can be connected to any of the ports.
82801BA
I/O Controller Hub
(ICH2)
USB
SMSC LPC47M142
LPC Bus
I/O Controller
Figure 5. USB Port Configuration for Boards with the SMSC LPC47M142 I/O Controller
For information about
The location of the USB connectors on the back panel
The signal names of the back panel USB connectors
The location of the front panel USB connector
The signal names of the front panel USB connector
The USB specification and UHCI
1.8.2.2 USB Configuration for Boards with the SMSC LPC47M132 I/O Controller
D845HV boards equipped with the optional SMSC LPC47M132 I/O controller support up to four
USB ports, as shown in Figure 6. The ICH2 provides four external ports: two ports are
implemented with stacked back panel connectors and two are accessible through the front panel
USB connector.
For more than four USB devices, an external hub can be connected to any of the ports.
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USB ports (2)
USB
CNR connector
USB ports (2)
USB
USB ports (2)
Back panel USB connectors
adjacent to the audio connectors
USB port accessible through a USB
connector on an optional CNR add-in card
Back panel USB connectors
adjacent to the PS/2 connectors
Front panel USB connector
Refer to
Figure 10, page 52
Table 19, page 53
Figure 15, page 68
Table 43, page 69
Section 1.5, page 18
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