JAJSNO1A December   2023  – January 2025 TAC5112

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  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 Digital Microphone Interface
    14. 6.14 Timing Diagrams
    15. 6.15 Typical Characteristics
  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  Digital PDM Microphone Record Channel
      8. 7.3.8  Incremental ADC (IADC) Mode
      9. 7.3.9  Signal-Chain Processing
        1. 7.3.9.1 ADC Signal-Chain
          1. 7.3.9.1.1  6 to 4 Input Select Multiplexer (6:4 MUX)
          2. 7.3.9.1.2  Programmable Channel Gain and Digital Volume Control
          3. 7.3.9.1.3  Programmable Channel Gain Calibration
          4. 7.3.9.1.4  Programmable Channel Phase Calibration
          5. 7.3.9.1.5  Programmable Digital High-Pass Filter
          6. 7.3.9.1.6  Programmable Digital Biquad Filters
          7. 7.3.9.1.7  Programmable Channel Summer and Digital Mixer
          8. 7.3.9.1.8  Configurable Digital Decimation Filters
            1. 7.3.9.1.8.1 Linear-phase filters
              1. 7.3.9.1.8.1.1 Sampling Rate: 8kHz or 7.35kHz
              2. 7.3.9.1.8.1.2 Sampling Rate: 16kHz or 14.7kHz
              3. 7.3.9.1.8.1.3 Sampling Rate: 24kHz or 22.05kHz
              4. 7.3.9.1.8.1.4 Sampling Rate: 32kHz or 29.4kHz
              5. 7.3.9.1.8.1.5 Sampling Rate: 48kHz or 44.1kHz
              6. 7.3.9.1.8.1.6 Sampling Rate: 96kHz or 88.2kHz
              7. 7.3.9.1.8.1.7 Sampling Rate: 192kHz or 176.4kHz
            2. 7.3.9.1.8.2 Low-latency Filters
              1. 7.3.9.1.8.2.1 Sampling Rate: 24kHz or 22.05kHz
              2. 7.3.9.1.8.2.2 Sampling Rate: 32kHz or 29.4kHz
              3. 7.3.9.1.8.2.3 Sampling Rate: 48kHz or 44.1kHz
              4. 7.3.9.1.8.2.4 Sampling Rate: 96kHz or 88.2kHz
              5. 7.3.9.1.8.2.5 Sampling Rate: 192kHz or 176.4kHz
            3. 7.3.9.1.8.3 Ultra Low-latency Filters
              1. 7.3.9.1.8.3.1 Sampling Rate: 24kHz or 22.05kHz
              2. 7.3.9.1.8.3.2 Sampling Rate: 32kHz or 29.4kHz
              3. 7.3.9.1.8.3.3 Sampling Rate: 48kHz or 44.1kHz
              4. 7.3.9.1.8.3.4 Sampling Rate: 96kHz or 88.2kHz
              5. 7.3.9.1.8.3.5 Sampling Rate: 192kHz or 176.4kHz
          9. 7.3.9.1.9  Automatic Gain Controller (AGC)
          10. 7.3.9.1.10 Voice Activity Detection (VAD)
          11. 7.3.9.1.11 Ultrasonic Activity Detection (UAD)
        2. 7.3.9.2 DAC Signal-Chain
          1. 7.3.9.2.1 Programmable Channel Gain and Digital Volume Control
          2. 7.3.9.2.2 Programmable Channel Gain Calibration
          3. 7.3.9.2.3 Programmable Digital High-Pass Filter
          4. 7.3.9.2.4 Programmable Digital Biquad Filters
          5. 7.3.9.2.5 Programmable Digital Mixer
          6. 7.3.9.2.6 Configurable Digital Interpolation Filters
            1. 7.3.9.2.6.1 Linear-phase filters
              1. 7.3.9.2.6.1.1 Sampling Rate: 8kHz or 7.35kHz
              2. 7.3.9.2.6.1.2 Sampling Rate: 16kHz or 14.7kHz
              3. 7.3.9.2.6.1.3 Sampling Rate: 24kHz or 22.05kHz
              4. 7.3.9.2.6.1.4 Sampling Rate: 32kHz or 29.4kHz
              5. 7.3.9.2.6.1.5 Sampling Rate: 48kHz or 44.1kHz
              6. 7.3.9.2.6.1.6 Sampling Rate: 96kHz or 88.2kHz
              7. 7.3.9.2.6.1.7 Sampling Rate: 192kHz or 176.4kHz
              8. 7.3.9.2.6.1.8 Sampling Rate: 384kHz or 352.8kHz
              9. 7.3.9.2.6.1.9 Sampling Rate 768kHz or 705.6kHz
            2. 7.3.9.2.6.2 Low-latency Filters
              1. 7.3.9.2.6.2.1 Sampling Rate: 24kHz or 22.05kHz
              2. 7.3.9.2.6.2.2 Sampling Rate: 32kHz or 29.4kHz
              3. 7.3.9.2.6.2.3 Sampling Rate: 48kHz or 44.1kHz
              4. 7.3.9.2.6.2.4 Sampling Rate: 96kHz or 88.2kHz
              5. 7.3.9.2.6.2.5 Sampling Rate: 192kHz or 176.4kHz
            3. 7.3.9.2.6.3 Ultra-Low-Latency Filters
              1. 7.3.9.2.6.3.1 Sampling Rate: 24 kHz or 22.05 kHz
              2. 7.3.9.2.6.3.2 Sampling Rate: 32 kHz or 29.4 kHz
              3. 7.3.9.2.6.3.3 Sampling Rate: 48 kHz or 44.1 kHz
              4. 7.3.9.2.6.3.4 Sampling Rate: 96 kHz or 88.2 kHz
              5. 7.3.9.2.6.3.5 Sampling Rate 192 kHz or 176.4 kHz
      10. 7.3.10 Interrupts, Status, and Digital I/O Pin Multiplexing
      11. 7.3.11 Power Tune Mode
    4. 7.4 Device Functional Modes
      1. 7.4.1 Sleep Mode or Software Shutdown
      2. 7.4.2 Active Mode
      3. 7.4.3 Software Reset
    5. 7.5 Programming
      1. 7.5.1 Control Serial Interfaces
        1. 7.5.1.1 I2C Control Interface
          1. 7.5.1.1.1 General I2C Operation
          2. 7.5.1.1.2 I2C Single-Byte and Multiple-Byte Transfers
            1. 7.5.1.1.2.1 I2C Single-Byte Write
            2. 7.5.1.1.2.2 I2C Multiple-Byte Write
            3. 7.5.1.1.2.3 I2C Single-Byte Read
            4. 7.5.1.1.2.4 I2C Multiple-Byte Read
        2. 7.5.1.2 SPI Control Interface
  9. 8 Register Maps
    1. 8.1 Device Configuration Registers
      1. 8.1.1 Book0_P0 Registers
      2. 8.1.2 B0_P1 Registers
      3. 8.1.3 Book0_Page3 Registers
    2. 8.2 Programmable Coefficient Registers
      1. 8.2.1  Programmable Coefficient Registers: Page 8
      2. 8.2.2  Programmable Coefficient Registers: Page 9
      3. 8.2.3  Programmable Coefficient Registers: Page 10
      4. 8.2.4  Programmable Coefficient Registers: Page 11
      5. 8.2.5  Programmable Coefficient Registers: Page 15
      6. 8.2.6  Programmable Coefficient Registers: Page 16
      7. 8.2.7  Programmable Coefficient Registers: Page 17
      8. 8.2.8  Programmable Coefficient Registers: Page 18
      9. 8.2.9  Programmable Coefficient Registers: Page 19
      10. 8.2.10 Programmable Coefficient Registers: Page 25
      11. 8.2.11 Programmable Coefficient Registers: Page 26
      12. 8.2.12 Programmable Coefficient Registers: Page 27
      13. 8.2.13 Programmable Coefficient Registers: Page 28
  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
      4. 9.2.4 Application Performance Plots
      5. 9.2.5 Example Device Register Configuration Script for EVM Setup
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 AVDD_MODE for 1.8V Operation
      2. 9.3.2 IOVDD_IO_MODE for 1.8V and 1.2V Operation
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 ドキュメントの更新通知を受け取る方法
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 静電気放電に関する注意事項
    6. 10.6 用語集
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報
7.3.9.1.5 Programmable Digital High-Pass Filter

To remove the DC offset component and attenuate the undesired low-frequency noise content in the record data, the device supports a programmable high-pass filter (HPF). The HPF is not a channel-independent filter setting but is globally applicable for all ADC channels. This HPF is constructed using the first-order infinite impulse response (IIR) filter and is efficient enough to filter out possible DC components of the signal. Table 7-46 shows the predefined –3dB cutoff frequencies available that can be set by using the ADC_DSP_HPF_SEL[1:0] register bits of P0_R114_D[5:4]. Additionally, to achieve a custom –3dB cutoff frequency for a specific application, the device also allows the first-order IIR filter coefficients to be programmed when the HPF_SEL[1:0] register bits are set to 2'b00. Figure 7-28 illustrates the frequency response plot for the HPF filter.

Table 7-20 HPF Programmable Settings
P0_R114_D[5:4] : ADC_DSP_HPF_SEL[1:0]-3dB CUTOFF FREQUENCY SETTING-3dB CUTOFF FREQUENCY AT 16kHz SAMPLE RATE-3dB CUTOFF FREQUENCY AT
48-kHz SAMPLE RATE
00Programmable 1st-order IIR filterProgrammable 1st-order IIR filterProgrammable 1st-order IIR filter
01 (default)0.00002 × fS0.25 Hz1 Hz
100.00025 × fS4 Hz12 Hz
110.002 × fS32 Hz96 Hz

 

TAC5112 HPF Filter Frequency Response PlotFigure 7-28 HPF Filter Frequency Response Plot

Equation 3 gives the transfer function for the first-order programable IIR filter:

Equation 1. TAC5112

The frequency response for this first-order programmable IIR filter with default coefficients is flat at a gain of 0 dB (all-pass filter). The host device can override the frequency response by programming the IIR coefficients in Table 7-47 to achieve the desired frequency response for high-pass filtering or any other desired filtering. If ADC_DSP_HPF_SEL[1:0] is set to 2'b00, the host device must write these coefficient values for the desired frequency response before powering-up any ADC channel for recording. Table 7-47 shows the filter coefficients for the first-order IIR filter. For additional details on configuring the programmable coefficients, refer Section 8.2.

Table 7-21 1st-Order IIR Filter Coefficients
FILTERFILTER COEFFICIENTDEFAULT COEFFICIENT VALUECOEFFICIENT REGISTER MAPPING
Programmable 1st-order IIR filter (can be allocated to HPF or any other desired filter)N00x7FFFFFFF P10_R120-R123
N10x00000000P10_R124-R127
D10x00000000P11_R8-R11