Related Manuals for Texas Instruments TPS2149
Summary of Contents for Texas Instruments TPS2149
- Page 1 USB Keyboard/Hub EVM Featuring the TPS2149 3.3 V LDO and Dual Switch User’s Guide September 2001 Mixed Signal Products SLVU050...
- Page 2 Texas 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. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
- Page 3 EVM IMPORTANT NOTICE Texas 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 EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms...
- Page 4 EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Copyright 2001, Texas Instruments Incorporated Mailing Address: Texas Instruments Post Office Box 655303...
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Page 5: Read This First
Chapter 3 – EVM Operation Chapter 4 – Bill of Materials Chapter 5 – EVM Layout Related Documentation From Texas Instruments TPS2149 3.3-V LDO and Dual Switch data sheet, literature number SLVS401. TUSB2136 USB Keyboard Hub Controller data sheet, literature number SLLS442. FCC Warning This equipment is intended for use in a laboratory test environment only. -
Page 7: Table Of Contents
5–1 TPS2149 Silk Screen ............ - Page 8 viii...
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Page 9: Introduction
Chapter 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. Topic Page Required Hardware and Software... -
Page 10: Required Hardware And Software
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. -
Page 11: Hardware Overview
Jumpers, test points, and LEDs have been added for testing, troubleshooting and debugging purposes. Most of the test points are located near the TPS2149. There are also test points on the differential pair lines of the upstream B-type connector and the two downstream A-type connectors. The C port can be probed directly on the EEPROM. -
Page 13: Evm Operation
Topic TPS2149 Setup .......... -
Page 14: Tps2149 Setup
TPS2149 Setup 3.1 TPS2149 Setup The USB keyboard/hub EVM is designed to allow evaluation of the TPS2149 device. Test points and 0- process (see Section 3.5). The EVM comes in a default configuration that requires no additional components, other than the required hardware and software identified in Section 1.1 of this user’s guide. -
Page 15: Jumpers And Test Points
3.5 Jumpers and Test Points Table 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). -
Page 17: Bill Of Materials
J1, J2 HEADER_1X2 J3, J4 HEADER_2X7 R9, R12–R14 R0805 Bill of Materials Part Number Description TPS2149 3.3-V LDO and dual switch TPS77018DBVR LDO 1.8 V output IC, 2 PORT USB HUB with TUSB2136PM FUN CONTR, 64 pin Mouser 623-2743019447 Ferrite bead Capacitor, ceramic, 0.1- F,... - Page 18 Table 4–1. EVM Bill of Materials (Continued) Item Ref. Des. Footprint R29–R38 R0805 R15, R17 R0805 R16, R25 R0805 R0805 R20, R21 R0805 R10, R11, R18, R19, R0805 R22, R26 R27, R28 R0805 R0805 R1–R8 R0805 8 DIP 8 pin socket TP7–TP13, TP_RED_1MM TP15–25...
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Page 19: Evm Layout
Chapter 5 EVM Layout Figure 5–1. TPS2149 Silk Screen EVM Layout... -
Page 20: Schematic
Figure 5–2. Schematic P3.1 P3.0 DGND P1.1 P0.6 P0.7 P1.0 P3.7 P2.7 P3.6 P2.6 P3.5 P2.5 P3.4 P2.4 P3.3 P2.3 P3.2 P2.2 P3.1/S1 DGND P3.0/S0 P2.1 P2.0 SELF/BUS Power Case V– Case Case V– Case Case V– Case...
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