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September 2001

Mixed Signal Products

User’s Guide

SLVU050

Summary of Contents for TPS2149

Page 1: ...September 2001 Mixed Signal Products User s Guide SLVU050...

Page 2: ...t that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in wh...

Page 3: ...handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s r...

Page 4: ...here is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 60 C The EVM is design...

Page 5: ...ta sheet literature number SLLS442 FCC Warning This equipment is intended for use in a laboratory test environment only It gen erates uses and can radiate radio frequency energy and has not been teste...

Page 6: ...vi...

Page 7: ...orts 3 2 3 3 Power Supplies 3 2 3 4 Light Emitting Diodes LEDs 3 2 3 5 Jumpers and Test Points 3 3 3 6 EEPROM 3 3 4 Bill of Materials 4 1 5 EVM Layout 5 1 Figures 1 1 USB Keyboard Hub EVM Hardware 1 2...

Page 8: ...viii...

Page 9: ...he 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 testi...

Page 10: ...tion 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...

Page 11: ...ontroller made by Texas Instruments to communicate with the host and the downstream devices A USB cable is needed to connect the root hub of the PC to the EVM type B connector J5 The downstream device...

Page 12: ...2 2...

Page 13: ...e USB keyboard hub EVM is summarized in paragraphs 3 1 through 3 6 Topic Page 3 1 TPS2149 Setup 3 2 3 2 Interfaces and USB Ports 3 2 3 3 Power Supplies 3 2 3 4 Light Emitting Diodes LEDs 3 2 3 5 Jumpe...

Page 14: ...ee Section 3 4 3 3 Power Supplies The USB keyboard hub EVM requires no external power supply for operation The EVM receives power via the USB cable The TPS2149 low dropout regulator is used to generat...

Page 15: ...sed for application specific firmware The TUSB2136 will automatically read the EEPROM at power up via the I2C bus A header must be added to the application firmware before loading into the EEPROM This...

Page 16: ...3 4...

Page 17: ...urata GRM39C0G330J050AD Capacitor ceramic 33 pF 16 V 20 9 2 C15 C16 7343D NEMCO LSR100 16DK125 Capacitor tantalum 100 F 16 V 20 10 1 C4 CAP_TANTALUM_B Sprague 293D475X0010B2T Capacitor tantalum 4 7 F...

Page 18: ...26 R0805 Std Std Resistor chip 30 1 10 W 5 25 2 R27 R28 R0805 Std Std Resistor chip 30 1 k 1 10 W 5 26 1 R23 R0805 Std Std Resistor chip 200 k 1 10 W 5 27 8 R1 R8 R0805 Std Std Resistor chip 511 1 10...

Page 19: ...5 1 EVM Layout EVM Layout Figure 5 1 TPS2149 Silk Screen Chapter 5...

Page 20: ...20 k 33 SUSP R24 10 S1 1 A 2 A 3 B 4 B DGND R35 0 R34 0 R33 0 R32 0 R31 0 R30 0 DGND P3 0 P3 1 S2 S3 33 SUSP R27 30 1 k R23 200 k DVCC_33 DGND C11 R17 1 k R15 1 k DVCC_33 S2 S3 DVCC_33 DGND GND 8 7 6...

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