Instruction/ maintenance manual of the product TPS2149 Texas Instruments
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September 2001.
IMPORT ANT NOTICE T exas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
EVM IMPORT ANT NOTICE T exas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EV ALUA TION PURPOSES ONL Y and is not considered by TI to be fit for commercial use.
EVM W ARNINGS AND RESTRICTIONS It is important to operate this EVM within the specified input and output ranges described in the EVM User ’ s Guide. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM.
Related Documentation From T exas Instruments v Preface Read This First How to Use This Manual This document contains the following chapters: - Chapter 1 – Introduction - Chapter 2 – Hardware Over.
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Contents vii Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Required Hardware and Software 1-2 . . . . . . . . . . . . . . . . .
viii.
1-1 Introduction This user ’ s guide describes the setup and operation of the USB keyboard/hub evaluation module (EVM). Information and instruction presented throughout this document assumes user familiarity with universal serial bus (USB) protocol and the use of common lab testing equipment.
Required Hardware and Software 1-2 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.
2-1 Hardware Overview Hardware Overview The USB keyboard/hub EVM is 4-inches L × 3.5-inches W and features the TPS2149 made by T exas Instruments. The TPS2149 is a power management device that integrates an LDO and two power switches into one small package.
2-2.
3-1 EVM Operation EVM Operation Operation of the USB keyboard/hub EVM is summarized in paragraphs 3.1 through 3.6. T opic Page 3.1 TPS2149 Setup 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Interfaces and USB Ports 3-2 .
TPS2149 Setup 3-2 3.1 TPS2149 Setup The USB keyboard/hub EVM is designed to allow evaluation of the TPS2149 device. T est points and 0- Ω resistors are provided to simplify the evaluation process (see Section 3.
Jumpers and T est Points 3-3 EVM Operation 3.5 Jumpers and T est Points T able 3 – 2 describes the jumpers, J1 and J2, used to connect P3.0 and P3.1 to D6 and D7 respectively , which should only be done when P3.0/S0 and P3.1/S1 are not set to GND for VID/PID selection (see the TUSB2136 keyboard hub controller data sheet).
3-4.
4-1 Bill of Materials Bill of Materials T able 4 – 1. EVM Bill of Materials Item Qty Ref. Des. Footprint MFR Part Number Description 1 1 U1 PKG_8P_DGK8 TI TPS2149 3.
4-2 T able 4 – 1. EVM Bill of Materials (Continued) Item Qty Ref. Des. Footprint MFR Part Number Description 19 10 R29 – R38 R0805 Std Std Resistor , chip, 0 Ω , 1/10 W , 5% 20 2 R15, R17 R0805 Std Std Resistor , chip, 1 k Ω , 1/10 W , 5% 21 2 R16, R25 R0805 Std Std Resistor , chip, 1.
5-1 EVM Layout EVM Layout Figure 5 – 1. TPS2149 Silk Screen Chapter 5.
5-2 Figure 5 – 2. Schematic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 64 63 62 61 60 59 58 47 56 55 54 53 52 51 50 49 SUSP TEST1 TEST0 RST SCL SDA VCC S3 S2 DP1 DGND GND OVCR1 PWR01 PWR02 OCYR2 DP2 PUR DP0 DM0 GND SELF/BUS P2.
An important point after buying a device Texas Instruments TPS2149 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Texas Instruments TPS2149 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Texas Instruments TPS2149 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Texas Instruments TPS2149 you will learn all the available features of the product, as well as information on its operation. The information that you get Texas Instruments TPS2149 will certainly help you make a decision on the purchase.
If you already are a holder of Texas Instruments TPS2149, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Texas Instruments TPS2149.
However, one of the most important roles played by the user manual is to help in solving problems with Texas Instruments TPS2149. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Texas Instruments TPS2149 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
