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Texas Instruments TAS5508-5142K7EVM, Руководство пользователя

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Control Interface (J40)

Table 2-7. J40 Pin Description (continued)

PIN NO.

NET-NAME AT SCHEMATICS

DESCRIPTION

11

GND

Ground

12

SCL

I

2

C bit clock

13

RESERVED

—

14

RESERVED

—

15

RESERVED

—

16

RESERVED

—

17

GND

Ground

18

RESERVED

—

19

RESERVED

—

20

SD

Shutdown error reporting for all
channels. Activated if TAS5142 has
high current or high temperature. See
Chapter 3, Protection.

21

SD

Shutdown reporting. Activated if one or
more TAS5142 has high current or high
temperature. Pin 21 connected to Pin
20. See Chapter 3, Protection.

22

OTW

Temperature warning. Activated if
TAS5142 has reached temperature
warning level.

23

OTW

Temperature warning. Activated if one
or more TAS5142 has reached
temperature warning level. Pin 23
connected to Pin 22.

24

HP-SEL

Headphone select. Headphone active
when LOW and inactive when HIGH. To
use this pin, <100-

Ω

resistor must be

placed for R50.

25

GND

Ground

26

GND

Ground

27

RESERVED

—

28

RESERVED

—

29

RESERVED

—

30

RESERVED

—

31

GND

Ground

32

GND

Ground

33

+5V

+5Vdc power supply (output)

34

+5V

+5Vdc power supply (output)

System Interfaces

12

SLEU071 – June 2006

Submit Documentation Feedback

Содержание TAS5508-5142K7EVM

Страница 1: ...TAS5508 5142K7EVM User s Guide Evaluation Module for the TAS5508B Digital Audio PWM Processor and TAS5142 Digital Amplifier Power Output Stage User s Guide June 2006 SLEU071 ...

Страница 2: ...2 SLEU071 June 2006 Submit Documentation Feedback ...

Страница 3: ... Loudspeaker Connectors J101 J107 10 2 4 Headphone Connector J700 11 2 5 Control Interface J40 11 2 6 Digital Audio Interface J60 13 3 Protection 15 3 1 Short Circuit Protection and Fault Reporting Circuitry 15 3 2 Fault Reporting 15 4 Related Documentation From Texas Instruments 17 4 1 Trademarks 17 Important Notices 18 SLEU071 June 2006 Contents 3 Submit Documentation Feedback ...

Страница 4: ...s 10 2 4 J101 J107 Pin Numbers 11 2 5 J700 Pin Numbers 11 List of Tables 2 1 Recommended Supply Voltages 9 2 2 J901 Pin Description 10 2 3 J900 Pin Description 10 2 4 J902 Pin Description 10 2 5 J101 J107 Pin Description 11 2 6 J700 Pin Description 11 2 7 J40 Pin Description 11 2 8 J60 Pin Description 13 3 1 TAS5142 Warning Error Signal Decoding 15 4 List of Figures SLEU071 June 2006 Submit Docume...

Страница 5: ... drivers four matched and electrically isolated enhancement mode N channel power DMOS transistors and protection fault reporting circuitry The DKD package has a PowerPAD on the top side for heat transfer through a heatsink The heatsink in this design is for evaluation purposes only This EVM together with a TI input USB board is a complete 7 channel digital audio amplifier system which includes dig...

Страница 6: ...eadphone Output TAS5508 5142K7EVM Features 7 channel PurePath Digital evaluation module double sided plated through PCB layout Stereo channel line output Stereo headphone output Self contained protection system short circuit and thermal Standard I2 S and I2 C control connector for TI input board Double sided plated through PCB layout Figure 1 1 Integrated PurePath Digital Amplifier System Overview...

Страница 7: ...gulator PSU INTERFACE J901 PSU CONTROL J902 INPUT SIGNAL INTERFACE J60 CONTROL INTERFACE J40 HEADPHONE OUTPUT J700 OUTPUT STAGE CHANNEL 6 OUTPUT STAGE CHANNEL 7 J101 J103 J102 J104 PSU INTERFACE J900 J105 J106 J107 PCB Key Map Physical structure for the TAS5508 5142K7EVM is illustrated in Figure 1 2 Figure 1 2 Physical Structure for TAS5508 5142K7EVM Rough Outline SLEU071 June 2006 Overview 7 Subm...

Страница 8: ...www ti com PCB Key Map Overview 8 SLEU071 June 2006 Submit Documentation Feedback ...

Страница 9: ...es Maximum output stage supply voltage depends of the speaker load resistance Please check the recommended maximum supply voltage in the TAS5142 data sheet Table 2 1 Recommended Supply Voltages VOLTAGE DESCRIPTION CURRENT RECOMMENDATIONS LIMITATIONS System power supply 15 V to 20 V 0 3 A Output stage power supply 0 V to 32 V 6 A 1 1 The rated current correspond to 2 channel full scale 80 W each wh...

Страница 10: ...put stage power supply 3 GND Extra ground 4 GND Extra ground This interface is used for onboard sensing of output supply voltage and for the power supply volume control PSVC signal Figure 2 3 J902 Pin Numbers Table 2 4 J902 Pin Description PIN NO NET NAME AT SCHEMATICS DESCRIPTION 1 Reserved for future use 2 PVDD Sense of output power supply 3 GND Ground 4 RESET System reset bidirectional 5 PSVC P...

Страница 11: ...headphone output This interface connects the TAS5508 5142K7EVM board to a TI input USB board Table 2 7 J40 Pin Description PIN NO NET NAME AT SCHEMATICS DESCRIPTION 1 GND Ground 2 RESERVED 3 GND Ground 4 RESET System reset bidirectional Activate MUTE before RESET for quiet reset 5 BKND ERR Backend error or soft reset provides reduced click and pop reset without resetting I2C volume register settin...

Страница 12: ... high temperature Pin 21 connected to Pin 20 See Chapter 3 Protection 22 OTW Temperature warning Activated if TAS5142 has reached temperature warning level 23 OTW Temperature warning Activated if one or more TAS5142 has reached temperature warning level Pin 23 connected to Pin 22 24 HP SEL Headphone select Headphone active when LOW and inactive when HIGH To use this pin 100 Ω resistor must be plac...

Страница 13: ...RIPTION 1 GND Ground 2 MCLK Master clock input Low jitter system clock for PWM generation and reclocking Ground connection from source to TAS5508B must be a low impedance connection 3 GND Ground 4 SDIN1 I2S data 1 channel 1 and 2 5 SDIN2 I2S data 2 channel 3 and 4 6 SDIN3 I2S data 3 7 SDIN4 I2S data 4 8 Reserved 9 Reserved 10 GND Ground 11 SCLK I2S bit clock 12 GND Ground 13 LRCLK I2S left right c...

Страница 14: ...www ti com Digital Audio Interface J60 System Interfaces 14 SLEU071 June 2006 Submit Documentation Feedback ...

Страница 15: ...he TAS5142 indicate fault conditions Please refer to the TAS5142 Data Manual for a description of these pins Table 3 1 TAS5142 Warning Error Signal Decoding OTW SD DEVICE CONDITION 0 0 High temperature error and or high current error 0 1 High temperature warning 1 0 Undervoltage lockout or high current error 1 1 Normal operation no errors warnings The temperature warning signals at the TAS5508 514...

Страница 16: ...www ti com Fault Reporting Protection 16 SLEU071 June 2006 Submit Documentation Feedback ...

Страница 17: ...TAS5508B data sheet SLES162 TAS5142 data sheet SLES126 TPA112 data sheet SLOS212 TPS3801K33 data sheet SLVS219 LM317M data sheet SLVS297 TPS76733 data sheet SLVS208 Additional documents TAS5508 5142K7EVM Application Report SLEA055 PC Configuration Tool for TAS5508B TAS5508 GUI ver 4 0 or later General Application Notes Equibit PurePath Digital and PowerPAD are trademarks of Texas Instruments SLEU0...

Страница 18: ... construction of the product it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES TI currently deals with a variety of customers for products and therefore our arrangement with the...

Страница 19: ...t If there 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 75 C The EVM is designed to operate properly with certain components above 75 C as long as the input and output ranges are maintained These components include but are not limited to linear regulators switching transi...

Страница 20: ...siness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necess...

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