Texas instruments TAS5414CEVM User Manual

TAS5414CEVM User Guide

User's Guide

Literature Number: SLOU359

January 2013

Contents

1 Quick-Start Guide ................................................................................................................ 5

1.1 Overview .................................................................................................................. 5

1.2 Software Installation ..................................................................................................... 5

1.3 Connections .............................................................................................................. 6

1.4 Initial Power Up .......................................................................................................... 6

1.5 Basic Graphical User Interface Controls ............................................................................. 7

2 EVM Description ................................................................................................................. 7

2.1 Description of Inputs .................................................................................................... 7

2.2 Description of Outputs .................................................................................................. 8

2.3 Controls ................................................................................................................... 9

2.4 Indicator Description .................................................................................................... 9

3 Graphical User Interface ...................................................................................................... 9

3.1 Introduction ............................................................................................................... 9

3.2 Software Installation ..................................................................................................... 9

3.3 Hardware Installation ................................................................................................... 9

3.4 Using the GUI ............................................................................................................ 9

4 TAS5414/TAS5424C EVM Schematics .................................................................................. 12

5 Board Layouts .................................................................................................................. 16

6 Bill of Materials ................................................................................................................. 24

7 Related Documentation from Texas Instruments ................................................................... 27

Table of Contents SLOU359–January 2013

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1 EVM to I 2 Connections for Input, Speaker Loads, Power, and I 3 End Panel for I

4 Main Window ................................................................................................................ 7

5 Wiring Harness for Power and Speaker Connections.................................................................. 8

6 Power and Speaker Connections to the EVM........................................................................... 8

7 TAS5414CPHD Top Layer ............................................................................................... 16

8 TAS5414CPHD Mid Layer Level 1...................................................................................... 16

9 TAS5414CPHD Mid Layer Level 2...................................................................................... 17

10 TAS5414CPHD Bottom Layer ........................................................................................... 17

11 TAS5414CPHD Top Silkscreen Overlay ............................................................................... 18

12 TAS5414CPHD Bottom Silkscreen Overlay ........................................................................... 18

13 TAS5414CDKD Top Layer .............................................................................................. 19

14 TAS5414CDKD Mid Layer Level 1...................................................................................... 19

15 TAS5414CDKD Mid Layer Level 2...................................................................................... 20

16 TAS5414CDKD Bottom Layer ........................................................................................... 20

17 TAS5414CDKD Top Silkscreen Overlay .............................................................................. 21

18 TAS5414CDKD Bottom Silkscreen Overlay ........................................................................... 21

19 TAS5424CDKD Top Layer .............................................................................................. 22

20 TAS5424CDKD Mid Layer Level 1...................................................................................... 22

21 TAS5424CDKD Mid Layer Level 2...................................................................................... 23

22 TAS5424CDKD Bottom Layer ........................................................................................... 23

23 TAS5424CDKD Top Silkscreen Overlay ............................................................................... 24

List of Figures

C Device Connections .......................................................................................... 5

C ............................................................... 6

C Connections............................................................................................ 6

SLOU359–January 2013 List of Figures

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List of Tables

1 Bill of Materials for TAS5414CPHD..................................................................................... 24

2 Bill of Materials for TAS5414CDKD..................................................................................... 25

3 Bill of Materials for TAS5424CDKD..................................................................................... 26

List of Tables SLOU359–January 2013

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The TAS5414C/TAS5424C evaluation module (EVM) is intended to be used to demonstrate the capabilities of the device. All the device features can be accessed through the hardware and the software graphical user interface (GUI) supplied. This user’s guide contains a description of the EVM and the GUI. Included are the EVM schematics, bill of materials, and the board layout.

1 Quick-Start Guide

This section provides a guide to set up and power up the EVM without the details of its operation. For a more-detailed description, read the complete user's guide.

1.1 Overview

The EVM consists of a single printed circuit board (PCB) mounted inside a metal chassis for EMC testing. The EVM must have an external I2C controller board to function. The USB-to-I2C controller board connects to a personal computer (PC) through a USB cable. The EVM connects to the I2C controller through a supplied 6-pin DIN cable. The PC needs the graphical user interface (GUI) software to control the EVM. See Figure 1 for the device connections.

Software is available on the enclosed CDrom and provides the GUI, this document, and any other necessary documents. Hardware provided in the EVM modules consists of the EVM, an I2C controller board, a USB cable, a 6-pin DIN cable, and speaker cables.

User's Guide

SLOU359–January 2013

TAS5414C EVM User Guide

Figure 1. EVM to I2C Device Connections

1.2 Software Installation

The software is provided on the TI Web site. Run the setup.exe program to install the GUI. For more details, see Section 1.5, Basic Graphical User Interface Controls.

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I C

Standby

OFF

Standby

Fault

Clip OTW

Standby

Mute

Power

{

Standby Switch

6-pin DIN I C Connector

Ch. 4

Ch. 3

Ch. 2

Ch. 1

PVDD

10-pin connector for speakers and

power

4 Audio RCA

Input

Connectors

Ch. 4

Ch. 3

Ch. 2

Ch. 1

Quick-Start Guide

1.3 Connections

The connections are for an analog signal for the input, speaker loads, power, and I2C. The audio inputs are made through the four RCA connectors. The power connectors and speaker connectors are made using the 10-pin connector.

The I2C connections are made through a 6-pin DIN connector. The provided adapter PCB and cable connect the EVM to the PC. The adapter PCB is an I2C-to-USB converter, which is a human-interface device (HID) and is automatically recognized by the PC when connected. Therefore, no drivers are needed.

The basic connections are: PVDD or power is connected to the EVM through the supplied 10-pin connector with the twisted red and black wires. The speakers or loads are also connected through the same 10-pin connector with the twisted red and white wires. The 6-pin DIN is connected to the I2C-to-USB adapter board. See Figure 2 for EVM input details.

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1.4 Initial Power Up

Before applying power, check to make sure the standby control switch is in the Standby OFF position, as shown in Figure 3. If the switch is in the Standby ON position, then at power up the I2C LED indicator on the GUI is red (see Section 3.4.3 for more details).

TAS5414C EVM User Guide SLOU359–January 2013

Figure 2. Connections for Input, Speaker Loads, Power, and I2C

Figure 3. End Panel for I2C Connections

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Apply power: the Standby, Mute, and Power LEDs should be on. The Fault LED may also be on, but not necessarily. This indicates that the unit is powered, and the TAS5414C or TAS5424C is in Standby Mode and Mute Mode. The fault indicated is an undervoltage fault during power up. This is normal and is cleared by reading I2C Register 0x00 (the Read Faults button) twice. Reading the faults once clears the faults, and the second read is to ensure that all the faults have been cleared.

1.5 Basic Graphical User Interface Controls

The default state for the device is mute. To unmute, click the Play All button at the top left of the window. To mute, click the Mute All button. The main EVM window is show in Figure 4.

EVM Description

2 EVM Description

2.1 Description of Inputs

2.1.1 Analog Inputs

The TAS5424C EVM provides balanced input and the TAS5414C EVM provides unbalanced (singleended) inputs. The four RCA jacks on either EVM are provided for the audio input. The unbalanced inputs have the shield of the RCA connected to ground. The balanced inputs have the plus (+) input on the center pin of the RCA and the minus (–) input on the shield. The balanced ground can be connected to the chassis or Power– (GND).

2.1.2 Power

The EVM requires one dc power connection. The connection is made through a 10-pin supplied connector. The black wire is ground and the red wire is connected to PVDD, which can range from 6 to 24 Vdc.

Figure 4. Main Window

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Ch. 4

Ch. 3

Ch. 2

Ch. 1

Power

EVM Description

2.2 Description of Outputs

2.2.1 Speaker and Power Connections

The 10-pin connector on the EVM and the wiring harness provide the power connections and the speaker connections. The power connection consists of a pair of red and black twisted wires, which correspond to the plus (+) output and minus (–) output, respectively. This pair of wires must be attached to a power supply.

The speaker connections consist of the remaining four pairs of red and white twisted wire. Each pair of red and white wires corresponds with a channel. The red wire corresponds to the plus (+) output, and the white wire corresponds to the minus (–) output. These wires must be terminated to a speaker load or resistive load.

See Figure 2 for more details on the 10-pin connector on the EVM, Figure 5 for more details about the speaker cables, and Figure 6 for the speaker cables connection to the EVM.

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Figure 5. Wiring Harness for Power and Speaker Connections

Figure 6. Power and Speaker Connections to the EVM

NOTE: Do not connect any of the speaker outputs to ground. The TAS5414C and TAS5424C have

full bridged outputs; connecting to ground triggers a fault.

The outputs can be paralleled by connecting the plus (+) of one channel to the plus (+) of the other channel. The minus (–) connection of one channel and the minus (–) connection of the other channel must be connected also. See the data sheet for more details on parallel outputs (PBTL).

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2.3 Controls

2.3.1 Standby

The standby switch is located next to the 6-pin DIN I2C input connector. Having the toggle in the Standby ON position forces the TAS5414C or TAS5424C into the standby mode. This is the same as a power-on reset (POR). POR shuts down the device, and I2C is not functional.

Setting the switch to the Standby OFF position puts the device in the EVM into its default power up mode. The I2C registers are set to their defaults. The amplifier output is in Hi-Z mode.

2.4 Indicator Description

There are five LED indicators on the chassis next to the standby switch. The LED farthest away from the standby switch is for the 3.3 Vdc supply. The 3.3 V supply is needed for the LEDs and the standby circuit. The other four LEDs indicate the four non-I2C output pins: FAULT , CLIP_OTW, STANDBY, and MUTE. The FAULT and CLIP_OTW signals are also routed to the 6-pin DIN for the GUI. In normal play mode, these four LEDs should not light.

3 Graphical User Interface

3.1 Introduction

The TAS5414C/TAS5424C GUI software is designed to demonstrate the features of the TAS5414C and TAS5424C. It is also able to assist the applications programmer in generating and saving the desired operating characteristics.

The TAS5414C/TAS5424C GUI has a feature by which it can log the I2C data being sent to the device. This can be helpful to the programmer in understanding the I2C commands needed for proper function.

Graphical User Interface

3.2 Software Installation

The GUI software is available on the CDrom provided with the EVM. Run the setup.exe program on a personal computer (PC) with the Windows OS to install the GUI.

The software is currently supported up to Windows XP and is not supported by Windows 7. The PC may need to connect to the internet to download the Microsoft .Net 2.0 environment, if it is not

already on the PC.

3.3 Hardware Installation

In the EVM package is a small PCB labeled USB2IIC2 on the PCB. This is the USB-to-I2C converter to communicate from the PC to the EVM. Connect the USB cable to the PC and the PCB. Connect the 6-pin cable to the connector labeled I2C on the converter PCB to the 6-pin connector on the EVM. The USB connection provides power for this card. The PC should automatically connect to the USB-connected PCB. See Figure 1, EVM to I2C Device Connections, for more details.

3.4 Using the GUI

3.4.1 The Main Window

3.4.1.1 TAS5414C Control Panel

The control panel consists of six buttons that perform basic functions on all four channels. Reset: This button sends a software reset to the device via I2C. It is equivalent to sending 0x9F to register

0x0C. All the I2C defaults are restored. Read Faults: This button reads the two fault registers 0x00 and 0x01 and reports the data to the Device

Status Panel.

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