Texas Instruments DEM-DAI3793A User Manual
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Texas Instruments DEM-DAI3793A User Manual

Texas Instruments DEM-DAI3793A User Manual

Evm evaluation module
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DEM-DAI3793A/3794A EVM
User's Guide
July 2007
AIP Consumer Audio—TI Japan
SBAU127

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Summary of Contents for Texas Instruments DEM-DAI3793A

  • Page 1 DEM-DAI3793A/3794A EVM User's Guide July 2007 AIP Consumer Audio—TI Japan SBAU127...
  • Page 2 SBAU127 – July 2007 Submit Documentation Feedback...

  • Page 3: Table Of Contents

    Preface Description Introduction—PCM3793A/94A 1.1.1 Key Features Pin Assignments and Terminal Functions DEM-DAI3793A/3794A EVM Description Getting Started Electrostatic Discharge Warning Unpacking the EVM Default Configuration Set-Up Guide Basic Operating Set-Up Software Control and Operation 3.2.1 User Interface Panel 3.2.2 Power On/Off Sequence 3.2.3...
  • Page 4 Interfacing to DSPs A.2.1 Register Control with DSP Interface Package Information Important Notices Contents SBAU127 – July 2007 Submit Documentation Feedback...
  • Page 5 PCM3793A Pin Assignments PCM3794A Pin Assignments DEM-DAI3793A/3794A EVM System Diagram EVM Configuration EVM and External Equipment Connections User Interface Window Communication Error Message Power On/Off Sequence Function Buttons Internal Module Power Up/Down Function Menu Tab Ramp Up Wave Form with Default Setting...
  • Page 6 PCM3793A DEM-PCM3793RHB-A (Daughter Card #1) PCM3793A DEM-PCM3793RHB-A Board Layout—Silkscreen Side PCM3793A DEM-PCM3793RHB-A Board Layout—Component Side PCM3793A DEM-PCM3793RHB-A Board Layout—Inner Layer 2 PCM3793A DEM-PCM3793RHB-A Board Layout—Inner Layer 3 PCM3793A DEM-PCM3793RHB-A Board Layout—Solder Side Line Output and Headphone Output Headphone Output with Sound Effect Cap-Less Headphone Output Headphone Output with Line Input (AIN2L/AIN2R) Headphone Output with Mono Mic Input (AIN1L, +20dB)
  • Page 7 PCM3793A/94A Terminal Functions Register Mapping for Power Up/Down Module PCM3793A/94A Resistor 125(7dh) RES[4:0]: Resistor Value Control PCM3793A/94A Resistor 125(7dh) PMT[1:0]: Power Up/Down Time Control and Register Direct Access Main Power Supply and Regulator Power-Supply Terminals for PCM3793A Power-Supply Pins Audio I/O I/F Controller (MSP430, TUSB3410) Analog Input and Output—Daughter Card #1 Analog Input and Output—Daughter Card #2...
  • Page 8 SYS-2722, PSIA-2722 are registered trademarks of Audio Precision, Inc. SPI is a trademark of Motorola, Inc. S, I C are trademarks of NXP Semiconductors. TOSLINK is a trademark of Toshiba Corporation. All other trademarks are the property of their respective owners. List of Tables SBAU127 –...

  • Page 9: About This Manual

    About This Manual This document provides the information needed to set up and operate the DEM-DAI3793A/3794A EVM evaluation module, a test platform for the 16-bit, low-power For a more detailed description of the PCM3793A/94A products, please refer to the product data sheets available from the Texas Instruments web site at http://www.ti.com.

  • Page 10: Related Documentation From Texas Instruments

    Related Documentation From Texas Instruments Related Documentation From Texas Instruments The following documents provide information regarding Texas Instruments integrated circuits used in the assembly of the DEM-DAI3793A/3794A EVM. These documents are available from the last character of the literature number corresponds to the document revision that is current at the time of the writing of this User’s Guide.

  • Page 11: Description

    The DEM-DAI3793A/3794A EVM is a complete evaluation platform for the low-power stereo audio codec with microphone bias, headphone, and digital speaker. All necessary connectors and circuitry are provided for interfacing to audio test systems and commercial audio equipment. Topic Introduction—PCM3793A/94A...

  • Page 12: Introduction-Pcm3793A/94A

    Introduction—PCM3793A/94A Introduction—PCM3793A/94A The PCM3793A/94A is a low-power stereo codec designed for portable digital audio applications. The device integrates a stereo digital speaker amplifier, headphone amplifier, line amplifier, line input, boost amplifier, microphone bias, programmable gain control, analog mixing, sound effects, and automatic level control (ALC) features.
  • Page 13 www.ti.com blank Programmable Function by Register Control: – Digital attenuation of DAC: 0dB to –62dB – Digital gain of DAC: 0dB, 6dB, 12dB, 18dB – Power up/down control for each module – 6dB to –70dB gain for analog outputs – 30dB to –12dB gain for analog inputs –...

  • Page 14: Pin Assignments And Terminal Functions

    Pin Assignments and Terminal Functions Pin Assignments and Terminal Functions Figure 1-1 Figure 1-2 show the pin assignments for the PCM3793A/94A. functions. PCM3793ARHB (TOP VIEW) AIN2L AIN1R AIN1L MODE MS/ADR MD/SDA MC/SCL LRCK Figure 1-1. PCM3793A Pin Assignments Table 1-1. PCM3793A/94A Terminal Functions TERMINAL NAME PCM3793ARHB...

  • Page 15: Dem-Dai3793A/3794A Evm Description

    SPORP DEM-DAI3793A/3794A EVM Description The DEM-DAI3793A/3794A evaluation module permits user control of the entire PCM3793A/94A system. The EVM allows users to test playback with and without digital input; recording through digital input/output with an optical cable or RCA jacks; a line input/output; stereo speaker output (PCM3793A only);...
  • Page 16 Description SBAU127 – July 2007 Submit Documentation Feedback...

  • Page 17: Getting Started

    This chapter provides information regarding DEM-DAI3793A/3794A EVM handling and unpacking, absolute operating conditions, and a description of the factory default switch and jumper configuration. Topic Electrostatic Discharge Warning Unpacking the EVM Default Configuration SBAU127 – July 2007 Submit Documentation Feedback Chapter 2 SBAU127 –...

  • Page 18: Electrostatic Discharge Warning

    Electrostatic Discharge Warning Electrostatic Discharge Warning Many of the components on the DEM-DAI3793A/3794A EVM are susceptible to damage by electrostatic discharge (ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handling the EVM, including the use of a grounded wrist strap at an approved ESD workstation.

  • Page 19: Default Configuration

    www.ti.com Default Configuration Figure 2-1 Figure 2-2 illustrate the default EVM configuration and the default external equipment connection configuration, respectively. SBAU127 – July 2007 Submit Documentation Feedback Figure 2-1. EVM Configuration Default Configuration Getting Started...

  • Page 20: Evm And External Equipment Connections

    Default Configuration Figure 2-2. EVM and External Equipment Connections The factory default configuration for the DEM-DAI3793A/3794A EVM is listed below. Motherboard: CN101, CN102: Connect dc power supply positive lead (+) to CN101 and negative lead (–) to CN102 SW301: Set Opt or Coax output for the proper cable connection...

  • Page 21: Set-Up Guide

    This chapter discusses how to set up the DEM-DAI3793A/3794A EVM and describes the EVM software. Topic Basic Operating Set-Up Software Control and Operation SBAU127 – July 2007 Submit Documentation Feedback Chapter 3 SBAU127 – July 2007 Set-Up Guide Page Set-Up Guide...

  • Page 22: Basic Operating Set-Up

    Basic Operating Set-Up Basic Operating Set-Up Follow these steps to set up the DEM-DAI3793A/3794A EVM for operation. Step 1. When using the kit for the first time, install the the host PC. To install the driver, refer to the Virtual COM Port Driver Installation Instructions.pdf located in the DEM-DAI3793 folder of the software CD or available...

  • Page 23: 3.2.2 Power On/Off Sequence

    PC as the EVM software (EVM3793A.exe). 3.2.3 Module Function Controls The DEM-DAI3793A/3794A EVM controller software contains 10 tabs: Power Up/Down: to power up and power down each module...

  • Page 24: Internal Module Power Up/Down Function Menu Tab

    Software Control and Operation 3.2.3.1 Power Up/Down This menu (shown in Figure the appropriate checkboxes to power up or power down a specific module. mapping for each module setting. Abbreviations such as DAL/DAR, MXL/MXR, and ADL/ADR stand for corresponding modules that are described in the block diagram of the PCM3793A (see Figure 3-4.

  • Page 25: Pcm3793A/94A Resistor 125(7Dh) Res[4:0]: Resistor Value Control

    www.ti.com Power Up/Down Time (ms) Options It is possible to select the V vice-versa by choosing a V 4.7μF V capacitor is chosen as the default setting (this capacitor is also mounted on the EVM). The 4.7μF V capacitor is the recommended value for operating the EVM. This configuration is the recommended power-on sequence discussed in the To select a different V value, choose the appropriate value from the V...

  • Page 26: Ramp Up Wave Form With Default Setting

    Power Up/Down Time (ms) Options Figure 3-5. Ramp Up Wave Form with Default Setting 3.2.3.2 Record Figure 3-7 shows the Record function tab options. Set-Up Guide Figure 3-6. Ramp Down Wave Form with Figure 3-7. Record Function Menu Tab www.ti.com Default Setting SBAU127 –...

  • Page 27: Evm Modules Corresponding To Record Function

    www.ti.com Figure 3-8 shows the EVM modules that correspond to the record function. Power On Power Reset Up/Down Manager AIN3L AIN2L AIN1L 0dB/ +20dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ +20dB Mic Bias MICB V COM Figure 3-8.

  • Page 28: Playback Function Menu Tab

    Digital Out Mute Control Options 3.2.3.3 Playback The Playback function is shown in Set-Up Guide Figure 3-9. Figure 3-9. Playback Function Menu Tab www.ti.com SBAU127 – July 2007 Submit Documentation Feedback...

  • Page 29: Modules Corresponding To Playback Function

    www.ti.com Figure 3-10 shows the corresponding modules for the playback function. SCKI Power On Power Clock Reset Up/Down Manager Manager (Mute) AIN3L AIN2L Analog Input L-Channel AIN1L 0dB/ 0dB to 21dB +20dB +30dB to 12dB +30dB to 12dB AIN1R Analog Input R-Channel AIN2R AIN3R 0dB/...

  • Page 30: Alc Function Menu Tab

    Digital Attenuation (ATP) Options Digital Attenuation (ATP) Options Move the L-ch and R-ch sliders to adjust the gain of the incoming digital signals prior to conversion by the DAC. The L-ch slider adjusts the DAC digital attenuator level The R-ch slider controls the DAC digital attenuator level Select the output channel to be either stereo or mono The digital boost option enables a gain control of 0dB, +6dB, +12dB, or +18dB for the DAC digital input 3.2.3.4...

  • Page 31: Source Options

    www.ti.com 3.2.3.5 Signal Processing I Figure 3-13 illustrates the Signal Processing 1 function menu tab. Figure 3-13. Signal Processing 1 Function Menu Tab Source Options Select the Source input to choose either the audio processing unit digital input (DAC) or digital output (ADC).
  • Page 32 3D Effect Options 3D Effect Options By implementing a 3D effect in this option box, the PCM3793A is enabled to provide 3D sound to the headphone and speaker outputs with low power consumption during either ADC or DAC operation. Check the 3D effect, then select an Effect type and an Efficiency drop-down menu to obtain the desired 3D enhancement.

  • Page 33: Notch Filter Characteristic Model

    www.ti.com Figure 3-15 illustrates the notch filter characteristic. All users can select any frequencies that can be used by the application system based on the notch filter coefficient theory discussed here. -3dB Figure 3-15. Notch Filter Characteristic Model Figure 3-16. Example of Measured Notch Filter Characteristic SBAU127 –...

  • Page 34: Signal Processing 2 Function Menu Tab

    DAC Oversampling Control Options 3.2.3.6 Signal Processing 2 The Signal Processing 2 Function menu tab is shown in Figure 3-17. Signal Processing 2 Function Menu Tab DAC Oversampling Control Options Select the DAC oversampling control menu to determine the DAC oversampling rate. The oversampling control can be set to either 128f The DAC oversampling rate range (for 192f frequency of input data is lower than 24kHz.

  • Page 35: Analog Path Function Menu Tab

    www.ti.com High-Pass Filter Options 3.2.3.7 Analog Path Figure 3-18 shows the Analog Path Function menu. Figure 3-18. Analog Path Function Menu Tab SBAU127 – July 2007 Set-Up Guide Submit Documentation Feedback...

  • Page 36: Modules Corresponding To Analog Path Function

    Analog Input Options Figure 3-19 illustrates the modules that correspond to the analog path function. Power On Power Reset Up/Down Manager AIN3L AIN2L AIN1L 0dB/ +20dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ +20dB Mic Bias MICB V COM Figure 3-19.

  • Page 37: Audio Interface Function Menu Tab

    www.ti.com PG5 Gain and PG6 Gain Options PG5 gain (for the left channel) or PG6 (for the right channel) can be adjusted from the available drop-down menu. 3.2.3.8 Audio Interface Figure 3-20 shows the Audio Interface Function menu. Figure 3-20. Audio Interface Function Menu Tab Audio Interface Setting 1 Options Use this section of the menu to set the audio data format for the DAC input and ADC output, and set the mode as Master or Slave.

  • Page 38: Status Detect Function Menu Tab

    HP Detection Options 3.2.3.9 Status Detect The Status Detect function is shown in Figure 3-21. Status Detect Function Menu Tab HP Detection Options Use this section of the menu to enable or disable the HP insertion detection process. You can also the HDTI pin logical polarity using the drop-down list box.

  • Page 39: 3.2.4 Lc89052T (Dir: Digital Audio I/F Receiver) Control Window

    Audio Clock/Data Control Options There are several options available for the audio clock and data control features in the DEM-DAI3793A/3794A EVM software. For the system audio clock control, users can select any of these options: PLL SCK: Selects the system clock rate for the PCM3793A.

  • Page 40: 3.2.5 Register Setting History

    Speaker Short Detection, L-Ch; Speaker Short Detection, R-Ch 3.2.5 Register Setting History When any checkboxes are selected on any tab of the software GUI (including power up/down operation, corresponding resistor address, and so forth), the register value is automatically written into the register setting history panel.

  • Page 41: Opening And Modifying A .Csv File

    www.ti.com 3.2.5.1 Modifying a .csv File The .csv file stores a sequence of register settings for the PCM3793A. To load a given register setting, it should be written in hex code, as shown in right row for resistor values. Figure 3-25. Opening and Modifying a .csv File A sleep line can be inserted for implementing an interval (or wait) time until executing the next line of the file.

  • Page 42: 3.2.6 Register Direct Access

    Speaker Short Detection, L-Ch; Speaker Short Detection, R-Ch 3.2.6 Register Direct Access Figure 3-26 illustrates the register direct access dialog. Read function: The Read function is only available in I the value, enter the Address number (in hex code format) in the left box and click the Read button. Data corresponding to the address appears.

  • Page 43: Switches And Connectors

    This chapter reviews the DEM-DAI3793A/3794A EVM switch and jumper configuration. Topic Overview Motherboard Daughter Card #1 (PCM3793A) Daughter Card #2 (DIR: LC89052T and DIT: DIT4096) SBAU127 – July 2007 Submit Documentation Feedback Switches and Connectors Chapter 4 SBAU127 – July 2007...

  • Page 44: Overview

    CN104 CN105 CN106 CN107 Switches and Connectors Figure 4-1. EVM Configuration list the connector references for the DEM-DAI3793A/3794A EVM Table 4-1. Main Power Supply and Regulator Connectors Main Power Supply and Regulator +6V to 10V Main Power Supply Power-Supply Pins...

  • Page 45: I/F Controller (Msp430, Tusb3410)

    www.ti.com Connectors CN108 CN109 CN110 CN111 CN112 CN113 CN114 CN115 CN116 CN117 U301 CN301 SW301 U302 CN302 CN305 CN306 CN307 CN308, CN309–CN316 CN317 CN320 CN201 CN202 SW201 SBAU127 – July 2007 Submit Documentation Feedback Table 4-3. Audio I/O Audio I/O Pins Analog audio input for AIN3L Analog audio input for AIN3R Analog audio output for HPOL/LOL...

  • Page 46: Daughter Card #1 (Pcm3793A)

    Daughter Card #1 (PCM3793A) Daughter Card #1 (PCM3793A) Table 4-5 lists the connector references for the first DEM-DAI3793A/3794A EVM daughter card. Table 4-5. Analog Input and Output—Daughter Card #1 Connectors JP10 JP11 JP12 JP13 JP18 Simplified descriptions of the analog input and output configuration for Daughter Card #1 are shown in...

  • Page 47: Analog Output Configuration (Daughter Card #1)

    www.ti.com PCM3793A HPCOM/MONO SPOLN SPOLP SPORN SPORP Figure 4-3. Analog Output Configuration (Daughter Card #1) Do not insert a headphone to J5 and J6 at the same time. Doing so connects resistors in parallel. SBAU127 – July 2007 Submit Documentation Feedback Daughter Card #1 (PCM3793A) MONO SPOUT (L-Ch)

  • Page 48: Daughter Card #2 (Dir: Lc89052T And Dit: Dit4096)

    Daughter Card #2 (DIR: LC89052T and DIT: DIT4096) Daughter Card #2 (DIR: LC89052T and DIT: DIT4096) Table 4-6 lists the connector references for the second DEM-DAI3793A/3794A EVM daughter card. Table 4-6. Analog Input and Output—Daughter Card #2 Connectors SW001 SW002...

  • Page 49: Evaluation And Measurements

    This chapter discusses how to set up jumpers on the DEM-DAI3793A/3794A EVM motherboard for performance evaluation using the Audio Precision SYS-2722 process of measuring dynamic characteristics is then presented, along with example characteristic data. Topic Slave Mode With Audio Precision SYS-2722 (Default Setting)

  • Page 50: Slave Mode With Audio Precision Sys-2722 (Default Setting)

    CN301 Figure 5-1. Slave Mode Configuration With SYS-2722 To put the DEM-DAI3793A/3794A EVM motherboard into the default slave mode configuration, connect the S/PDIF input and output to optical jumper U302 (or coaxial jumper CN302) and jumper U301 (or jumper CN301). Then select SW301 and SW001, respectively. Refer to the jumper combination shown in Figure 5-2.

  • Page 51: Jumper Configuration For Slave Mode (Default)

    www.ti.com All short Short plug Short plug All open Short plug Short plug Figure 5-2. Jumper Configuration for Slave Mode (Default) SBAU127 – July 2007 Submit Documentation Feedback Slave Mode With Audio Precision SYS-2722 (Default Setting) CN305 T-SCLK T-BCK T-LRCK TX-DATA E-SCLK R-SCLK...

  • Page 52: Master Mode With Audio Precision Sys-2722

    Master Mode with Audio Precision SYS-2722 To enable the DEM-DAI3793A/3794A EVM motherboard for use in Master mode, the path of the S/PDIF input to the PCM3793A through DIR is not available for use. LRCK and BCK change the respective output states at the PCM3793A side in master mode;...

  • Page 53: Jumper Configuration For Master Mode

    www.ti.com Short plug Short plug Short plug All open Short plug Figure 5-4. Jumper Configuration for Master Mode SBAU127 – July 2007 Submit Documentation Feedback Master Mode with Audio Precision SYS-2722 CN305 T-SCLK T-BCK T-LRCK TX-DATA E-SCLK R-SCLK R-BCK R-LRCK RX-DATA CN307 E-SCK...

  • Page 54: Combined Master And Slave Modes With Psia-2722

    Combined Master and Slave Modes With PSIA-2722 As shown in Figure 5-5, the DEM-DAI3793A/3794A EVM can provide evaluation for both slave and master modes of the PCM3793A at the same time without setup jumpers on the motherboard if the user has access to the PSIA-2722 analyzer.

  • Page 55: Measurements For Dynamic Characteristics

    For the DEM-DAI3793A/3794A EVM, the evaluation environment specifications are: Equipment used: Audio Precision, System Two Cascade Plus Audio Data format: 16-bit Left-Justified...

  • Page 56: 5.4.1 Digital-To-Analog (D/A) Performance

    Measurements for Dynamic Characteristics 5.4.1 Digital-to-Analog (D/A) Performance Measurement path: 01.Line Output and Headphone Output csv file: 01_DAC_Line_Output_and_Headphone_Output.csv Power Supply Parameter 3.3V THD+N (0dBFS at 1kHz) SNR (BPZ input) DR (–60dBFS input) Channel Separation (BPZ input for target channel) Table 5-2. 16 Power Supply Parameter 3.3V...

  • Page 57: 5.4.2 Analog-To-Digital (A/D) Performance

    www.ti.com 5.4.2 Analog-to-Digital (A/D) Performance Measurement path: 17.Line Input (AIN3L/AIN3R) csv file: 17_ADC_Line_Input.csv Power Supply Parameter 3.3V THD+N ( –1dB at 1kHz) SNR (BPZ input) DR (–60dBFS input) Channel Separation (BPZ input for target channel) To obtain the performance results shown in down, and other functions should be set with these parameters: Headphone and Speaker Amp: Disabled DAC L-channel and DAC R-channel: Disabled...

  • Page 58: Speaker Output Filter Configuration

    Measurements for Dynamic Characteristics 5.4.3.1 LC Low-Pass Filter Daughter Card #2 provides an LC low-pass filter (LPF) to obtain a clean analog signal from the pulse-width modulated (PWM) output of the speaker output. This configuration is shown in Additionally, a snubber circuit is inserted into the signal line to achieve the best output power performance by suppressing ringing in the PWM pulse;...

  • Page 59: 5.4.4 Amplitude Versus Frequency Performance

    www.ti.com 5.4.4 Amplitude Versus Frequency Performance 5.4.4.1 A/D Spectrum Measurement path: 17.Line Input (AIN3L/AIN3R) csv file: 17_ADC_Line_Input.csv Note that an unweighted filter and an AES17 bandwidth of 22Hz to 20kHz should be set to obtain precise spectrum results. AMPLITUDE vs FREQUENCY Frequency (kHz) Figure 5-8.

  • Page 60: D/A Amplitude Vs Frequency Result: Bpz (Zero Data) Input

    Measurements for Dynamic Characteristics 5.4.4.2 D/A Spectrum Measurement path: 01.Line Output and Headphone Output csv file: 01_DAC_Line_Output_and_Headphone_Output.csv Note that an unweighted filter and an AES17 bandwidth of 22Hz to 20kHz should be set to obtain precise spectrum results. AMPLITUDE vs FREQUENCY Frequency (kHz) Figure 5-11.

  • Page 61: Connection Diagram For Practical Applications

    www.ti.com Connection Diagram for Practical Applications The PCM3793A/94A Daughter Card has been configured to measure dynamic audio performance by common audio analyzer equipment. In a practical application (such as portable audio player or cellular phone), simple components set up as shown in Figure 5-15 will be reasonable to save assembly and test spaces.

  • Page 62: 5.5.1 Filter Consideration For Speaker Output

    Connection Diagram for Practical Applications 5.5.1 Filter Consideration for Speaker Output For a practical application such as a portable audio player or cellular phone, a ferrite chip bead will be a suitable low-pass filter to the speaker output; see connections for headphone output and insertion detection. Refer to the product data sheet for further information on this application circuit.

  • Page 63: Schematic, Pcb Layout, And Bill Of Materials

    Schematic, PCB Layout, and Bill of Materials This chapter provides the electrical and physical layout information for the DEM-DAI3793A/3794A EVM. The bill of materials is included for component and manufacturer reference. Topic Schematics Printed Circuit Board Layout Component List SBAU127 – July 2007...

  • Page 64: Schematics

    Schematics Schematics Figure 6-1 Figure 6-2 illustrate the schematics for the DEM-DAI3793A/3794A EVM. Figure 6-1. PCM3793A DEM-PCM3793RHB-A Connector (Daughter Card #1) Schematic, PCB Layout, and Bill of Materials www.ti.com SBAU127 – July 2007 Submit Documentation Feedback...

  • Page 65: Pcm3793A Dem-Pcm3793Rhb-A (Daughter Card #1)

    www.ti.com Schematics Figure 6-2. PCM3793A DEM-PCM3793RHB-A (Daughter Card #1) SBAU127 – July 2007 Schematic, PCB Layout, and Bill of Materials Submit Documentation Feedback...

  • Page 66: Printed Circuit Board Layout

    DEM-DAI3793A/3794A EVM. Note: Board layouts are not to scale. These figures are intended to show how the board is laid out; they are not intended to be used for manufacturing DEM-DAI3793A/3794A EVM PCBs. Figure 6-3. PCM3793A DEM-PCM3793RHB-A Board Layout—Silkscreen Side...

  • Page 67: Pcm3793A Dem-Pcm3793Rhb-A Board Layout-Component Side

    www.ti.com Printed Circuit Board Layout Figure 6-4. PCM3793A DEM-PCM3793RHB-A Board Layout—Component Side SBAU127 – July 2007 Schematic, PCB Layout, and Bill of Materials Submit Documentation Feedback...

  • Page 68: Pcm3793A Dem-Pcm3793Rhb-A Board Layout-Inner Layer

    www.ti.com Printed Circuit Board Layout Figure 6-5. PCM3793A DEM-PCM3793RHB-A Board Layout—Inner Layer 2 Schematic, PCB Layout, and Bill of Materials SBAU127 – July 2007 Submit Documentation Feedback...

  • Page 69: Pcm3793A Dem-Pcm3793Rhb-A Board Layout-Inner Layer

    www.ti.com Printed Circuit Board Layout Figure 6-6. PCM3793A DEM-PCM3793RHB-A Board Layout—Inner Layer 3 SBAU127 – July 2007 Schematic, PCB Layout, and Bill of Materials Submit Documentation Feedback...

  • Page 70: Pcm3793A Dem-Pcm3793Rhb-A Board Layout-Solder Side

    www.ti.com Printed Circuit Board Layout Figure 6-7. PCM3793A DEM-PCM3793RHB-A Board Layout—Solder Side Schematic, PCB Layout, and Bill of Materials SBAU127 – July 2007 Submit Documentation Feedback...

  • Page 71: Component List

    Component List Table 6-1 lists the Bill of Materials for the DEM-DAI3793A/3794A EVM. RefDes Count R3, R5, R6, R7, CP1—CP4 0.1μF C8, C9, C13, C14 0.82μF 100k , R9, R10 C3, C4, C6, C10 10μF/16V C1, C2 1μF 1μF/50V R1, R2 2.2k...
  • Page 72 Schematic, PCB Layout, and Bill of Materials SBAU127 – July 2007 Submit Documentation Feedback...

  • Page 73: Reference .Csv Files, Interfacing To Dsps, And Package Information

    Reference .csv Files, Interfacing to DSPs, and Package Topic Reference .csv Files Interfacing to DSPs Package Information SBAU127 – July 2007 Submit Documentation Feedback Reference .csv Files, Interfacing to DSPs, and Package Information Appendix A SBAU127 – July 2007 Information Page...

  • Page 74: Reference .Csv Files

    Reference .csv Files Reference .csv Files The .csv files are bundled with the DEM-DAI3793A/3794A EVM Controller. These files enable users to execute register settings corresponding to the specific operating modes discussed in the product data sheet by importing them into the software.

  • Page 75: A Related Signal Flow Diagrams

    www.ti.com Related Signal Flow Diagrams Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ 0dB to +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 0dB to +20dB 21dB Mic Bias MICB V COM Figure A-1.

  • Page 76: Headphone Output With Sound Effect

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB to 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 0dB to 21dB +20dB Mic Bias MICB V COM Figure A-2. Headphone Output with Sound Effect Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 77: Cap-Less Headphone Output

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB to 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 0dB to 21dB +20dB Mic Bias MICB V COM SBAU127 – July 2007 Submit Documentation Feedback SCKI DOUT...

  • Page 78: Headphone Output With Line Input (Ain2L/Ain2R)

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB to 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 0dB to 21dB +20dB Mic Bias MICB V COM Figure A-4. Headphone Output with Line Input (AIN2L/AIN2R) Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 79: Headphone Output With Mono Mic Input (Ain1L, +20Db)

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB to 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 0dB to 21dB +20dB Mic Bias MICB V COM Figure A-5. Headphone Output with Mono Mic Input (AIN1L, +20dB) SBAU127 –...

  • Page 80: Headphone Output With Mono Diff Mic Input (Ain1L/Ain1R, +20Db)

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB to 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 0dB to 21dB +20dB Mic Bias MICB V COM Figure A-6. Headphone Output with Mono Diff Mic Input (AIN1L/AIN1R, +20dB) Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 81: Stereo Speaker Output

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM SBAU127 – July 2007 Submit Documentation Feedback SCKI DOUT LRCK...

  • Page 82: Mono Speaker Output

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB to 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 0dB to 21dB +20dB Mic Bias MICB V COM Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT LRCK...

  • Page 83: Speaker Output With Line Input (Ain2L/Ain2R)

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-9. Speaker Output with Line Input (AIN2L/AIN2R) SBAU127 –...

  • Page 84: Speaker Output With Mono Mic Input (Ain1L, +20Db)

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-10. Speaker Output with Mono Mic Input (AIN1L, +20dB) Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 85: Speaker Output With Mono Diff Mic Input (Ain1L/Ain1R, +20Db)

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-11. Speaker Output with Mono Diff Mic Input (AIN1L/AIN1R, +20dB) SBAU127 –...

  • Page 86: Line Input (Ain2L/Ain2R) To Headphone Output

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-12. Line Input (AIN2L/AIN2R) to Headphone Output Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 87: Mono Line Input (Ain2L) To Headphone Output

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-13. Mono Line Input (AIN2L) to Headphone Output SBAU127 –...

  • Page 88: Mono Mic Input (Ain1L, +20Db) To Headphone Output

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-14. Mono Mic Input (AIN1L, +20dB) to Headphone Output Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 89: Mono Diff Mic Input (Ain1L/Ain1R, +20Db) To Headphone Output

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-15. Mono Diff Mic Input (AIN1L/AIN1R, +20dB) to Headphone Output SBAU127 –...

  • Page 90: Mono Mic Input (Ain1L, +20Db) To Speaker Output

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-16. Mono Mic Input (AIN1L, +20dB) to Speaker Output Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 91: Line Input (Ain3L/Ain3R)

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM SBAU127 – July 2007 Submit Documentation Feedback SCKI DOUT LRCK...

  • Page 92: Mic Input (Ain1L/Ain1R, +20Db)

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-18. Mic Input (AIN1L/AIN1R, +20dB) Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 93: Mic Input (Ain1L/Ain1R, +20Db) With Alc

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-19. Mic Input (AIN1L/AIN1R, +20dB) with ALC SBAU127 –...

  • Page 94: Mono Mic Input (Ain1L, +20Db)

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-20. Mono Mic Input (AIN1L, +20dB) Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 95: Mono Mic Input (Ain1L, +20Db) With Alc

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-21. Mono Mic Input (AIN1L, +20dB) with ALC SBAU127 –...

  • Page 96: Mono Diff Mic Input (Ain1L/Ain1R, +20Db)

    Reference .csv Files Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-22. Mono Diff Mic Input (AIN1L/AIN1R, +20dB) Reference .csv Files, Interfacing to DSPs, and Package Information SCKI DOUT...

  • Page 97: Mono Diff Mic Input (Ain1L/Ain1R, +20Db) With Alc

    www.ti.com Signal path Power On Power Reset Up/Down Manager Manager AIN3L AIN2L AIN1L 0dB/ +20dB 21dB +30dB to 12dB +30dB to 12dB AIN1R AIN2R AIN3R 0dB/ 21dB +20dB Mic Bias MICB V COM Figure A-23. Mono Diff Mic Input (AIN1L/AIN1R, +20dB) with ALC SBAU127 –...

  • Page 98: A.2 Interfacing To Dsps

    Interfacing to DSPs Interfacing to DSPs Refer to the following examples for interfacing the PCM3793A to a digital signal processor (DSP) in either slave or master mode. To implement master mode, MSTR = 1 of register 84 (54h) enables master mode operation as discussed in the after DAC power-up (49h) of PCM3793A, as noted in Example A-1.

  • Page 99: A.3 Package Information

    www.ti.com A.2.1 Register Control with DSP Interface Table A-2 summarizes the recommended power-on sequence for the PCM3793A. The shaded cells within the table indicate specific register settings that must be configured for the device to properly operate with a DSP interface. Table A-2.

  • Page 100: Evaluation Board/Kit Important Notice

    EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.

  • Page 101: Important Notice

    TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products Amplifiers amplifier.ti.com...

This manual is also suitable for:

Dem-dai3794aDem-dai3793a/3794a evm

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