Texas Instruments TAS5414BQ1PHDEVM Manuale utente

TAS5414B and TAS5424B Evaluation Module

(EVM)

User's Guide

Literature Number: SLOU335

May 2012

Contents

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

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

1.2 Software Installation ..................................................................................................... 6

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 .................................................................................................. 7

2.3 Controls ................................................................................................................... 8

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/TAS5424B EVM Schematics .................................................................................. 11

5 Board Layouts .................................................................................................................. 15

6 Bill of Materials ................................................................................................................. 23

7 Related Documentation from Texas Instruments ................................................................... 25

2Table of Contents SLOU335–May 2012

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List of Figures

1 EVM to I2C Device Connections .......................................................................................... 5

2 Connections for Input, Speaker Loads, Power, and I2C............................................................... 6

3 End Panel for I2C Connections............................................................................................ 6

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

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

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

7 TAS5414BPHD Top Layer ............................................................................................... 15

8 TAS5414BPHD Mid Layer Level 1...................................................................................... 15

9 TAS5414BPHD Mid Layer Level 2...................................................................................... 16

10 TAS5414BPHD Bottom Layer ........................................................................................... 16

11 TAS5414BPHD Top Silkscreen Overlay ............................................................................... 17

12 TAS5414BPHD Bottom Silkscreen Overlay............................................................................ 17

13 TAS5414BDKD Top Layer .............................................................................................. 18

14 TAS5414BDKD Mid Layer Level 1...................................................................................... 18

15 TAS5414BDKD Mid Layer Level 2...................................................................................... 19

16 TAS5414BDKD Bottom Layer ........................................................................................... 19

17 TAS5414BDKD Top Silkscreen Overlay ............................................................................... 20

18 TAS5414BDKD Bottom Silkscreen Overlay............................................................................ 20

19 TAS5424BDKD Top Layer .............................................................................................. 21

20 TAS5424BDKD Mid Layer Level 1...................................................................................... 21

21 TAS5424BDKD Mid Layer Level 2...................................................................................... 22

22 TAS5424BDKD Bottom Layer ........................................................................................... 22

23 TAS5424BDKD Top Silkscreen Overlay ............................................................................... 23

SLOU335–May 2012 List of Figures

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List of Tables

1 Bill of Materials for TAS5414BPHD..................................................................................... 23

2 Bill of Materials for TAS5414BDKD..................................................................................... 24

3 Bill of Materials for TAS5424BDKD..................................................................................... 25

4List of Tables SLOU335–May 2012

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User's Guide

SLOU335–May 2012

TAS5414B and TAS5424B Evaluation Module (EVM) User's

Guide

The TAS5414B/TAS5424B 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.

Figure 1. EVM to I2C Device Connections

SLOU335–May 2012 TAS5414B and TAS5424B Evaluation Module (EVM) User's Guide

{

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

I C

2Standby

OFF

Standby

Fault

Clip OTW

Standby

Mute

Power

Quick-Start Guide

www.ti.com

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.

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.

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

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).

Figure 3. End Panel for I2C Connections

6TAS5414B and TAS5424B Evaluation Module (EVM) User's Guide SLOU335–May 2012

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EVM Description

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 TAS5414B or TAS5424B 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.

Figure 4. Main Window

2 EVM Description

2.1 Description of Inputs

2.1.1 Analog Inputs

The TAS5424B EVM provides balanced input and the TAS5414B EVM provides unbalanced (single-

ended) 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.

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.

SLOU335–May 2012 TAS5414B and TAS5424B Evaluation Module (EVM) User's Guide

Ch. 4

Ch. 3

Ch. 2

Ch. 1

Power

EVM Description

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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.

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 TAS5414B and TAS5424B 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).

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 TAS5414B or TAS5424B 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.

8TAS5414B and TAS5424B Evaluation Module (EVM) User's Guide SLOU335–May 2012

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Graphical User Interface

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 TAS5414B/TAS5424B GUI software is designed to demonstrate the features of the TAS5414B and

TAS5424B. It is also able to assist the applications programmer in generating and saving the desired

operating characteristics.

The TAS5414B/TAS5424B 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.

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 TAS5414 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

Load Diag: This button runs a script to perform the built-in load diagnostics and reports any faults to the

Device Status Panel. The details are displayed for each channel.

Play All: This button uses I2C to write 0x00 to register 0x0C which places all four channels into play

mode.

Mute All: This button uses I2C to set all channels to mute mode by writing 0x10 to register 0x0C. All

channels switch at 50% duty cycle, and no signal will pass from the input to the output.

Hi-Z All: This button places all four channel outputs into a high-impedance state by writing 0x1F to

are placed in Hi-Z.

SLOU335–May 2012 TAS5414B and TAS5424B Evaluation Module (EVM) User's Guide

Graphical User Interface

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3.4.2 Device Status Panel

Device Panel Title: The title at the top of the Device Status Panel shows which device the GUI is set to

communicate. The four options are: Master, Slave1, Slave 2, and Slave 3. This is changed in the menu

item Device Select.

Global: This provides fault feedback from the device. If a fault occurs a red Fault is indicated. Read the

fault detail in the register 0x00 and 0x01.

Temperature: This shows the temperature of the device. When the device is below 125°C, the color is

green. At Level 1 OTW, the color is yellow. At Level 2 OTW, the color is orange. At Level 3 OTW, the

color is red.

Channel 1-4: These four items provide individual channel output states: Hi-Z, Mute, Low-Low, and Play.

The gain setting will be displayed with the play indication.

Fsw: This item provides the switching frequency of the outputs.

3.4.3 Connection Status Panel

There are two LED indicators to provide connection status.

USB: This indicator is gray when there is no USB connection to the USB2II2C PCB. The I2C LED is off.

The indicator is green when a connection is good.

I2C: This indicator is red when there is a USB connection, but no I2C connection. A green indicator shows

that I2C communication is functioning properly. If the LED is off, then there is no USB connection.

3.4.4 I2C Log Panel

All the I2C commands that are sent or received by the TAS5414B and TAS5424B are shown in this panel

except for I2C polling information. The displayed data can be copied to the clipboard for a programming

aid.

This type of information can be controlled by the I2C Log menu item. An R indicates a value read from the

device and a W indicates a value sent to the device. Valuable comments are also provided. Polling I2C

reads are not shown to prevent over-running the panel with background reads. See Section 3.4.7 for

further details on each tab.

3.4.5 Register Overview Panel

This panel provides the hexadecimal (hex) data for each I2C register. The hex data in the control registers

can be directly changed here and sent to the device with the Apply button. Any changes made to the data

are cleared by clicking the Cancel button. The Register Detail panel is changed either by changing the hex

value of the register directly or by clicking on the register and changing the specific bit in the Register

Detail panel. (See Section 3.4.6)

3.4.6 Register Detail Panel

This panel provides a detailed view of each register. By clicking on a register in the Register Overview

panel, the details of that register are shown. Each bit has its description and its value shown by the

checkbox. A checkbox with a check mark indicates a logical 1 and an unchecked checkbox indicates a

logical 0. Changes to each bit can be made by clicking on the checkbox. The changes are sent to the

device by clicking on the Apply button in the Register Overview panel.

3.4.7 Menu

File: In this menu, the Exit function can be found at the bottom of the drop-down menu.

Device Select: The I2C device select value can be changed in the Menu. For the EVM, use the default

value, which is Master.

Macros: In this menu, macros can be used. Macros are currently not being implemented at this time.

Custom Macros: This allows the users to create then save their own macros for later use.

10 TAS5414B and TAS5424B Evaluation Module (EVM) User's Guide SLOU335–May 2012

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