SLASFC2 January   2024 TAC5112-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Timing Requirements: I2C Interface
    7. 6.7  Switching Characteristics: I2C Interface
    8. 6.8  Timing Requirements: SPI Interface
    9. 6.9  Switching Characteristics: SPI Interface
    10. 6.10 Timing Requirements: TDM, I2S or LJ Interface
    11. 6.11 Switching Characteristics: TDM, I2S or LJ Interface
    12. 6.12 Timing Requirements: PDM Digital Microphone Interface
    13. 6.13 Switching Characteristics: PDM Digial Microphone Interface
    14. 6.14 Timing Diagrams
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Serial Interfaces
        1. 7.3.1.1 Control Serial Interfaces
        2. 7.3.1.2 Audio Serial Interfaces
          1. 7.3.1.2.1 Time Division Multiplexed Audio (TDM) Interface
          2. 7.3.1.2.2 Inter IC Sound (I2S) Interface
          3. 7.3.1.2.3 Left-Justified (LJ) Interface
        3. 7.3.1.3 Using Multiple Devices With Shared Buses
      2. 7.3.2 Phase-Locked Loop (PLL) and Clock Generation
      3. 7.3.3 Input Channel Configurations
      4. 7.3.4 Output Channel Configurations
      5. 7.3.5 Reference Voltage
      6. 7.3.6 Programmable Microphone Bias
      7. 7.3.7 Signal-Chain Processing
        1. 7.3.7.1 ADC Signal-Chain
          1. 7.3.7.1.1 Programmable Channel Gain and Digital Volume Control
          2. 7.3.7.1.2 Programmable Channel Gain Calibration
          3. 7.3.7.1.3 Programmable Channel Phase Calibration
          4. 7.3.7.1.4 Programmable Digital High-Pass Filter
          5. 7.3.7.1.5 Programmable Digital Biquad Filters
          6. 7.3.7.1.6 Programmable Channel Summer and Digital Mixer
          7. 7.3.7.1.7 Configurable Digital Decimation Filters
            1. 7.3.7.1.7.1 Linear Phase Filters
              1. 7.3.7.1.7.1.1 Sampling Rate: 16kHz or 14.7kHz
              2. 7.3.7.1.7.1.2 Sampling Rate: 24kHz or 22.05kHz
              3. 7.3.7.1.7.1.3 Sampling Rate: 32kHz or 29.4kHz
              4. 7.3.7.1.7.1.4 Sampling Rate: 48kHz or 44.1kHz
              5. 7.3.7.1.7.1.5 Sampling Rate: 96kHz or 88.2kHz
              6. 7.3.7.1.7.1.6 Sampling Rate: 384kHz or 352.8kHz
        2. 7.3.7.2 DAC Signal-Chain
          1. 7.3.7.2.1 Programmable Channel Gain and Digital Volume Control
          2. 7.3.7.2.2 Programmable Channel Gain Calibration
          3. 7.3.7.2.3 Programmable Digital High-Pass Filter
          4. 7.3.7.2.4 Programmable Digital Biquad Filters
          5. 7.3.7.2.5 Programmable Digital Mixer
          6. 7.3.7.2.6 Configurable Digital Interpolation Filters
            1. 7.3.7.2.6.1 Linear Phase Filters
              1. 7.3.7.2.6.1.1 Sampling Rate: 16kHz or 14.7kHz
              2. 7.3.7.2.6.1.2 Sampling Rate: 24kHz or 22.05kHz
              3. 7.3.7.2.6.1.3 Sampling Rate: 32kHz or 29.4kHz
              4. 7.3.7.2.6.1.4 Sampling Rate: 48kHz or 44.1kHz
              5. 7.3.7.2.6.1.5 Sampling Rate: 96kHz or 88.2kHz
              6. 7.3.7.2.6.1.6 Sampling Rate: 384kHz or 352.8kHz
      8. 7.3.8 Interrupts, Status, and Digital I/O Pin Multiplexing
    4. 7.4 Device Functional Modes
  9. 8 Register Maps
    1. 8.1 TAC5212 Registers
    2. 8.2 TAC5212 Registers
    3. 8.3 TAC5212 Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Application
      2. 9.2.2 Design Requirements
      3. 9.2.3 Detailed Design Procedure
  11. 10Power Supply Recommendations
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Tape and Reel Information

Package Options

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

7.3.7.2 DAC Signal-Chain

Figure 7-32 shows the key components of the playback signal chain.
GUID-20230612-SS0I-BXC2-DWST-QKNKCNPNDLTK-low.svgFigure 7-32 DAC Signal-Chain Processing Flowchart

The DAC signal chain offers a highly flexible low-noise playback path for low-noise and high-fidelity audio applications. This low-noise and low-distortion, multibit, delta-sigma DAC enables the TAC5112-Q1 to achieve 120 dB dynamic range in very low power. Moreover, the DAC architecture has inherent antialias filtering with a high rejection of out-of-band frequency noise around multiple modulator frequency components. Therefore, the device prevents noise from aliasing into the audio band. Further on in the signal chain, an integrated, high-performance multistage digital interpolation filter sharply cuts off any out-of-band frequency noise with high stop-band attenuation.

The signal chain also consists of various highly programmable digital processing blocks such as biquad filters, phase calibration, gain calibration, high-pass filter, digital summer or mixer, synchronous sample rate converter, distortion limiter, thermal foldback, brownout prevention, and volume control. The details of these processing blocks are discussed further in this section. The device also supports up to four channel single-ended output modes and an analog bypass option from ADC input to DAC output.

The output channels for playback can be enabled or disabled by using the CH_EN (P0_R118) register, and the input channels for the audio serial interface can be enabled or disabled by using the PASI_RX_CHx_CFG or SASI_RX_CHx_CFG bits. The device supports simultaneous power-up and power-down of all active channels for simultaneous playback. However, based on the application needs, if some channels must be powered-up or powered-down dynamically when the other channel playback is on, then that use case is supported by setting the DYN_PUPD_CFG register.

The device supports multiple data mixing options where up to 8 Input Channels from Main ASI, 2 Input Channels from Aux ASI, ADC loopback data, and tone generator can be mixed with flexible gain options for each path before playback on DAC output. By default, these mixers are disabled and channels are configured for only one channel of data. Mixers can be configured by setting ASI_DIN_Mixers on Page 17.

The device supports an output signal bandwidth of up to 100 kHz, which allows the high-frequency non-audio signal to be played by using a 216 kHz (or higher) sample rate. Wideband mode can be enabled or disabled by using the DAC_CHx_BW_Mode bit.

For sample rates of 48 kHz or lower, the device supports all features and various programmable processing blocks. However, for sample rates higher than 48 kHz, there are limitations in the number of simultaneous channel recordings and playback supported and the number of biquad filters and such. See the TAC5212 Sampling Rates and Programmable Processing Blocks Supported application report for further details.