SLASF29A January   2022  – October 2024 TAA5242

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements: TDM, I2S or LJ Interface
    7. 5.7 Switching Characteristics: TDM, I2S or LJ Interface
    8. 5.8 Timing Diagrams
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Hardware Control
      2. 6.3.2 Audio Serial Interfaces
        1. 6.3.2.1 Time Division Multiplexed Audio (TDM) Interface
        2. 6.3.2.2 Inter IC Sound (I2S) Interface
        3. 6.3.2.3 Left-Justified (LJ) Interface
      3. 6.3.3 Phase-Locked Loop (PLL) and Clock Generation
      4. 6.3.4 Analog Input Configurations
      5. 6.3.5 Reference Voltage
      6. 6.3.6 Integrated Microphone Bias
      7. 6.3.7 Signal-Chain Processing
        1. 6.3.7.1 Configurable Digital Decimation Filters
          1. 6.3.7.1.1 Linear-phase filters
            1. 6.3.7.1.1.1 Sampling Rate: 8kHz or 7.35kHz
            2. 6.3.7.1.1.2 Sampling Rate: 16kHz or 14.7kHz
            3. 6.3.7.1.1.3 Sampling Rate: 24kHz or 22.05kHz
            4. 6.3.7.1.1.4 Sampling Rate: 32kHz or 29.4kHz
            5. 6.3.7.1.1.5 Sampling Rate: 48kHz or 44.1kHz
            6. 6.3.7.1.1.6 Sampling Rate: 96kHz or 88.2kHz
            7. 6.3.7.1.1.7 Sampling Rate: 192kHz or 176.4kHz
          2. 6.3.7.1.2 Low-latency Filters
            1. 6.3.7.1.2.1 Sampling Rate: 24kHz or 22.05kHz
            2. 6.3.7.1.2.2 Sampling Rate: 32kHz or 29.4kHz
            3. 6.3.7.1.2.3 Sampling Rate: 48kHz or 44.1kHz
            4. 6.3.7.1.2.4 Sampling Rate: 96kHz or 88.2kHz
            5. 6.3.7.1.2.5 Sampling Rate: 192kHz or 176.4kHz
        2. 6.3.7.2 Programmable Digital High-Pass Filter
    4. 6.4 Device Functional Modes
      1. 6.4.1 Active Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Application
      2. 7.2.2 Design Requirements
      3. 7.2.3 Detailed Design Procedure
      4. 7.2.4 Application Performance Plots
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.3.2.2 Inter IC Sound (I2S) Interface

The standard I2S protocol is defined for only two channels: left and right. In I2S mode, the MSB of the left slot 0 is transmitted on the falling edge of BCLK in the second cycle after the falling edge of FSYNC. The MSB of the right slot 0 is transmitted on the falling edge of BCLK in the second cycle after the rising edge of FSYNC. Each subsequent data bit is transmitted on the falling edge of BCLK. In controller mode, FSYNC is transmitted on the falling edge of BCLK. Figure 6-5 and Figure 6-6 show the protocol timing for I2S operation in target and controller mode of operation.

TAA5242 I2S Mode Protocol Timing (MD0 shorted to ground) in Target Mode Figure 6-5 I2S Mode Protocol Timing (MD0 shorted to ground) in Target Mode
TAA5242 I2S Protocol Timing (MD0 shorted to AVDD) In Controller Mode Figure 6-6 I2S Protocol Timing (MD0 shorted to AVDD) In Controller Mode

For proper operation of the audio bus in I2S mode, the number of bit clocks per frame must be greater than or equal to the number of active output channels (including left and right slots) times the word length of the output channel data.