Chapter 5 Input/Output Interfaces

5.7UNIVERSAL SERIAL BUS INTERFACE

The Universal Serial Bus (USB) interface provides asynchronous/isochronous data transfers with compatible peripherals such as keyboards, printers, or modems. This high-speed interface supports hot-plugging of compatible devices, making possible system configuration changes without powering down or even rebooting systems.

All models provide six USB ports; four rear-mounted ports and two ports accessible in the front. The system dynamically makes the port-to-controller configuration based on the bandwidth demands of the connected USB peripheral devices.

MCP

USB

Cntlr. #1

USB

Cntlr. #2

Tx/Rx Data

Tx/Rx Data

Tx/Rx Data

Tx/Rx Data

Sys. Board

Header

Tx/Rx Data

Tx/Rx Data

D315

Rear Panel

USB Port 1

USB Port 2

USB Port 3

USB Port 4

Front Panel

USB Port 5

USB Port 6

MCP

USB 1.1 Cntlr. #1

USB 1.1 Cntlr. #2

USB 2.0

Cntlr.

Tx/Rx Data

Tx/Rx Data

Tx/Rx Data

Tx/Rx Data

Sys. Board

Header

Tx/Rx Data

Tx/Rx Data

d325

Rear Panel

USB Port 1

USB Port 2

USB Port 3

USB Port 4

Front Panel

USB Port 5

USB Port 6

Difference Matrix

Function

D315

D325

USB Controller Type:

 

 

Controller #1

USB 1.1

USB 1.1

Controller #2

USB 1.1

USB 1.1

Controller #3

na

USB 2.0

Port-to-Controller Type

3 per controller,

6 to 1.1,

Configuration Options

2 to one, or 4 to another

4 to 1.1 & 2 to 2.0,

 

 

3 to 1.1 & 3 to 2.0,

 

 

2 to 1.1 & 4 to 2.0,

 

 

6 to 2.0

Figure 5-7.USB I/F Block Diagram and Difference Matrix

5-22Compaq D315 and hp d325 Personal Computers Featuring the AMD Athlon XP Processor

Second Edition – April 2003

Page 104
Image 104
HP D315 manual Mcp Usb, Difference Matrix