Usb Connector - HP dx7300 Technical Reference Manual

USB Control
The USB is controlled through I/O registers as listed in table 5-19.
I/O Address
00, 01h
02, 03h
04, 05h
06, 07
08, 0B
0Ch
10, 1 1h
12, 13h
18h

5.7.3 USB Connector

These systems provide type-A USB ports as shown in Figure 5-9 below.
Figure 5-9. Universal Serial Bus Connector (as viewed from rear of chassis)
Pin
1
2
Technical Reference Guide
Table 5-19.
USB Control Registers
Register
Command
Status
Interupt Enable
Frame Number
Frame List Base Address
Start of Frame Modify
Port 1 Status/Control
Port 2 Status/Control
Test Data
1
Signal Description
Vcc +5 VDC
USB- Data (minus)
Default Value
0000h
0000h
0000h
0000h
0000h
0080h
0080h
2 3 4
Table 5-20.
USB Connector Pinout
Pin Signal
3 USB+
4 GND
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Input/Output Interfaces
40h
00h
Description
Data (plus)
Ground
5-25