Texas Instruments TPS2149 manual Required Hardware and Software

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Required Hardware and Software

1.1 Required Hardware and Software

The USB keyboard/hub EVM is designed for use with a personal computer running a USB-enabled operating system. The PC, with BIOS, chipsets, and operating system, should be USB 1.1 specification-compliant. If the BIOS is not compliant, the system may not boot when USB devices are connected at power up, and the EVM may not function in DOS mode. Additionally, one or more USB devices are needed to plug into the downstream ports of the USB keyboard/hub EVM to exercise the hub ports. A standard USB cable is needed to connect the USB keyboard/hub EVM to a downstream port of the PC or a USB hub tier.

Figure 1–1. USB Keyboard/Hub EVM Hardware

USB EVM

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Contents User’s Guide Important Notice EVM Important Notice EVM Warnings and Restrictions How to Use This Manual Read This FirstPage Contents TablesViii Introduction Required Hardware and Software Hardware Overview Page EVM Operation EepromTPS2149 Setup LEDCOL ROWPage Bill of Materials EVM Bill of MaterialsXU1 DIP EVM Layout TPS2149 Silk ScreenDgnd DVCC33 Susp