JAJSSO6 December   2023 PCM6140-Q1

ADVANCE INFORMATION  

  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 Digial Microphone Interface
    14. 6.14 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
        1. 7.3.3.1 Common Mode Tolerance Selection
      4. 7.3.4  Reference Voltage
      5. 7.3.5  Programmable Microphone Bias
      6. 7.3.6  Signal-Chain Processing
        1. 7.3.6.1 Programmable Channel Gain and Digital Volume Control
        2. 7.3.6.2 Programmable Channel Gain Calibration
        3. 7.3.6.3 Programmable Channel Phase Calibration
        4. 7.3.6.4 Programmable Digital High-Pass Filter
        5. 7.3.6.5 Programmable Digital Biquad Filters
        6. 7.3.6.6 Programmable Channel Summer and Digital Mixer
        7. 7.3.6.7 Configurable Digital Decimation Filters
          1. 7.3.6.7.1 Linear Phase Filters
            1. 7.3.6.7.1.1 Sampling Rate: 8 kHz or 7.35 kHz
            2. 7.3.6.7.1.2 Sampling Rate: 16 kHz or 14.7 kHz
            3. 7.3.6.7.1.3 Sampling Rate: 24 kHz or 22.05 kHz
            4. 7.3.6.7.1.4 Sampling Rate: 32 kHz or 29.4 kHz
            5. 7.3.6.7.1.5 Sampling Rate: 48 kHz or 44.1 kHz
            6. 7.3.6.7.1.6 Sampling Rate: 96 kHz or 88.2 kHz
            7. 7.3.6.7.1.7 Sampling Rate: 192 kHz or 176.4 kHz
            8. 7.3.6.7.1.8 Sampling Rate: 384 kHz or 352.8 kHz
            9. 7.3.6.7.1.9 Sampling Rate 768 kHz or 705.6 kHz
          2. 7.3.6.7.2 Low-Latency Filters
            1. 7.3.6.7.2.1 Sampling Rate: 16 kHz or 14.7 kHz
            2. 7.3.6.7.2.2 Sampling Rate: 24 kHz or 22.05 kHz
            3. 7.3.6.7.2.3 Sampling Rate: 32 kHz or 29.4 kHz
            4. 7.3.6.7.2.4 Sampling Rate: 48 kHz or 44.1 kHz
            5. 7.3.6.7.2.5 Sampling Rate: 96 kHz or 88.2 kHz
            6. 7.3.6.7.2.6 Sampling Rate 192 kHz or 176.4 kHz
          3. 7.3.6.7.3 Ultra-Low-Latency Filters
            1. 7.3.6.7.3.1 Sampling Rate: 16 kHz or 14.7 kHz
            2. 7.3.6.7.3.2 Sampling Rate: 24 kHz or 22.05 kHz
            3. 7.3.6.7.3.3 Sampling Rate: 32 kHz or 29.4 kHz
            4. 7.3.6.7.3.4 Sampling Rate: 48 kHz or 44.1 kHz
            5. 7.3.6.7.3.5 Sampling Rate: 96 kHz or 88.2 kHz
            6. 7.3.6.7.3.6 Sampling Rate 192 kHz or 176.4 kHz
            7. 7.3.6.7.3.7 Sampling Rate 384 kHz or 352.8 kHz
      7. 7.3.7  Dynamic Range Enhancer (DRE)
      8. 7.3.8  Automatic Gain Controller (AGC)
      9. 7.3.9  Digital PDM Microphone Record Channel
      10. 7.3.10 Interrupts, Status, and Digital I/O Pin Multiplexing
    4. 7.4 Device Functional Modes
      1. 7.4.1 Hardware Shutdown
      2. 7.4.2 Sleep Mode or Software Shutdown
      3. 7.4.3 Active Mode
      4. 7.4.4 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
    6. 7.6 Register Maps
      1. 7.6.1 Device Configuration Registers
        1. 7.6.1.1 Register Descriptions
          1. 7.6.1.1.1  PAGE_CFG Register (page = 0x00, address = 0x00) [reset = 0h]
          2. 7.6.1.1.2  SW_RESET Register (page = 0x00, address = 0x01) [reset = 0h]
          3. 7.6.1.1.3  SLEEP_CFG Register (page = 0x00, address = 0x02) [reset = 0h]
          4. 7.6.1.1.4  SHDN_CFG Register (page = 0x00, address = 0x05) [reset = 5h]
          5. 7.6.1.1.5  ASI_CFG0 Register (page = 0x00, address = 0x07) [reset = 30h]
          6. 7.6.1.1.6  ASI_CFG1 Register (page = 0x00, address = 0x08) [reset = 0h]
          7. 7.6.1.1.7  ASI_CFG2 Register (page = 0x00, address = 0x09) [reset = 0h]
          8. 7.6.1.1.8  ASI_CH1 Register (page = 0x00, address = 0x0B) [reset = 0h]
          9. 7.6.1.1.9  ASI_CH2 Register (page = 0x00, address = 0x0C) [reset = 1h]
          10. 7.6.1.1.10 ASI_CH3 Register (page = 0x00, address = 0x0D) [reset = 2h]
          11. 7.6.1.1.11 ASI_CH4 Register (page = 0x00, address = 0x0E) [reset = 3h]
          12. 7.6.1.1.12 ASI_CH5 Register (page = 0x00, address = 0x0F) [reset = 4h]
          13. 7.6.1.1.13 ASI_CH6 Register (page = 0x00, address = 0x10) [reset = 5h]
          14. 7.6.1.1.14 ASI_CH7 Register (page = 0x00, address = 0x11) [reset = 6h]
          15. 7.6.1.1.15 ASI_CH8 Register (page = 0x00, address = 0x12) [reset = 7h]
          16. 7.6.1.1.16 MST_CFG0 Register (page = 0x00, address = 0x13) [reset = 2h]
          17. 7.6.1.1.17 MST_CFG1 Register (page = 0x00, address = 0x14) [reset = 48h]
          18. 7.6.1.1.18 ASI_STS Register (page = 0x00, address = 0x15) [reset = FFh]
          19. 7.6.1.1.19 CLK_SRC Register (page = 0x00, address = 0x16) [reset = 10h]
          20. 7.6.1.1.20 PDMCLK_CFG Register (page = 0x00, address = 0x1F) [reset = 40h]
          21. 7.6.1.1.21 PDMIN_CFG Register (page = 0x00, address = 0x20) [reset = 0h]
          22. 7.6.1.1.22 GPIO_CFG0 Register (page = 0x00, address = 0x21) [reset = 22h]
          23. 7.6.1.1.23 GPO_CFG0 Register (page = 0x00, address = 0x22) [reset = 0h]
          24. 7.6.1.1.24 GPO_CFG1 Register (page = 0x00, address = 0x23) [reset = 0h]
          25. 7.6.1.1.25 GPO_CFG2 Register (page = 0x00, address = 0x24) [reset = 0h]
          26. 7.6.1.1.26 GPO_CFG3 Register (page = 0x00, address = 0x25) [reset = 0h]
          27. 7.6.1.1.27 GPO_VAL Register (page = 0x00, address = 0x29) [reset = 0h]
          28. 7.6.1.1.28 GPIO_MON Register (page = 0x00, address = 0x2A) [reset = 0h]
          29. 7.6.1.1.29 GPI_CFG0 Register (page = 0x00, address = 0x2B) [reset = 0h]
          30. 7.6.1.1.30 GPI_CFG1 Register (page = 0x00, address = 0x2C) [reset = 0h]
          31. 7.6.1.1.31 GPI_MON Register (page = 0x00, address = 0x2F) [reset = 0h]
          32. 7.6.1.1.32 INT_CFG Register (page = 0x00, address = 0x32) [reset = 0h]
          33. 7.6.1.1.33 INT_MASK0 Register (page = 0x00, address = 0x33) [reset = FFh]
          34. 7.6.1.1.34 INT_LTCH0 Register (page = 0x00, address = 0x36) [reset = 0h]
          35. 7.6.1.1.35 BIAS_CFG Register (page = 0x00, address = 0x3B) [reset = 0h]
          36. 7.6.1.1.36 CH1_CFG0 Register (page = 0x00, address = 0x3C) [reset = 0h]
          37. 7.6.1.1.37 CH1_CFG1 Register (page = 0x00, address = 0x3D) [reset = 0h]
          38. 7.6.1.1.38 CH1_CFG2 Register (page = 0x00, address = 0x3E) [reset = C9h]
          39. 7.6.1.1.39 CH1_CFG3 Register (page = 0x00, address = 0x3F) [reset = 80h]
          40. 7.6.1.1.40 CH1_CFG4 Register (page = 0x00, address = 0x40) [reset = 0h]
          41. 7.6.1.1.41 CH2_CFG0 Register (page = 0x00, address = 0x41) [reset = 0h]
          42. 7.6.1.1.42 CH2_CFG1 Register (page = 0x00, address = 0x42) [reset = 0h]
          43. 7.6.1.1.43 CH2_CFG2 Register (page = 0x00, address = 0x43) [reset = C9h]
          44. 7.6.1.1.44 CH2_CFG3 Register (page = 0x00, address = 0x44) [reset = 80h]
          45. 7.6.1.1.45 CH2_CFG4 Register (page = 0x00, address = 0x45) [reset = 0h]
          46. 7.6.1.1.46 CH3_CFG0 Register (page = 0x00, address = 0x46) [reset = 0h]
          47. 7.6.1.1.47 CH3_CFG1 Register (page = 0x00, address = 0x47) [reset = 0h]
          48. 7.6.1.1.48 CH3_CFG2 Register (page = 0x00, address = 0x48) [reset = C9h]
          49. 7.6.1.1.49 CH3_CFG3 Register (page = 0x00, address = 0x49) [reset = 80h]
          50. 7.6.1.1.50 CH3_CFG4 Register (page = 0x00, address = 0x4A) [reset = 0h]
          51. 7.6.1.1.51 CH4_CFG0 Register (page = 0x00, address = 0x4B) [reset = 0h]
          52. 7.6.1.1.52 CH4_CFG1 Register (page = 0x00, address = 0x4C) [reset = 0h]
          53. 7.6.1.1.53 CH4_CFG2 Register (page = 0x00, address = 0x4D) [reset = C9h]
          54. 7.6.1.1.54 CH4_CFG3 Register (page = 0x00, address = 0x4E) [reset = 80h]
          55. 7.6.1.1.55 CH4_CFG4 Register (page = 0x00, address = 0x4F) [reset = 0h]
          56. 7.6.1.1.56 CH5_CFG2 Register (page = 0x00, address = 0x52) [reset = C9h]
          57. 7.6.1.1.57 CH5_CFG3 Register (page = 0x00, address = 0x53) [reset = 80h]
          58. 7.6.1.1.58 CH5_CFG4 Register (page = 0x00, address = 0x54) [reset = 0h]
          59. 7.6.1.1.59 CH6_CFG2 Register (page = 0x00, address = 0x57) [reset = C9h]
          60. 7.6.1.1.60 CH6_CFG3 Register (page = 0x00, address = 0x58) [reset = 80h]
          61. 7.6.1.1.61 CH6_CFG4 Register (page = 0x00, address = 0x59) [reset = 0h]
          62. 7.6.1.1.62 CH7_CFG2 Register (page = 0x00, address = 0x5C) [reset = C9h]
          63. 7.6.1.1.63 CH7_CFG3 Register (page = 0x00, address = 0x5D) [reset = 80h]
          64. 7.6.1.1.64 CH7_CFG4 Register (page = 0x00, address = 0x5E) [reset = 0h]
          65. 7.6.1.1.65 CH8_CFG2 Register (page = 0x00, address = 0x61) [reset = C9h]
          66. 7.6.1.1.66 CH8_CFG3 Register (page = 0x00, address = 0x62) [reset = 80h]
          67. 7.6.1.1.67 CH8_CFG4 Register (page = 0x00, address = 0x63) [reset = 0h]
          68. 7.6.1.1.68 DSP_CFG0 Register (page = 0x00, address = 0x6B) [reset = 1h]
          69. 7.6.1.1.69 DSP_CFG1 Register (page = 0x00, address = 0x6C) [reset = 40h]
          70. 7.6.1.1.70 DRE_CFG0 Register (page = 0x00, address = 0x6D) [reset = 7Bh]
          71. 7.6.1.1.71 AGC_CFG0 Register (page = 0x00, address = 0x70) [reset = E7h]
          72. 7.6.1.1.72 IN_CH_EN Register (page = 0x00, address = 0x73) [reset = F0h]
          73. 7.6.1.1.73 ASI_OUT_CH_EN Register (page = 0x00, address = 0x74) [reset = 0h]
          74. 7.6.1.1.74 PWR_CFG Register (page = 0x00, address = 0x75) [reset = 0h]
          75. 7.6.1.1.75 DEV_STS0 Register (page = 0x00, address = 0x76) [reset = 0h]
          76. 7.6.1.1.76 DEV_STS1 Register (page = 0x00, address = 0x77) [reset = 80h]
          77. 7.6.1.1.77 I2C_CKSUM Register (page = 0x00, address = 0x7E) [reset = 0h]
      2. 7.6.2 Programmable Coefficient Registers
        1. 7.6.2.1 Programmable Coefficient Registers: Page = 0x02
        2. 7.6.2.2 Programmable Coefficient Registers: Page = 0x03
        3. 7.6.2.3 Programmable Coefficient Registers: Page = 0x04
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Four-Channel Analog Microphone Recording
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Example Device Register Configuration Script for EVM Setup
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Eight-Channel Digital PDM Microphone Recording
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Example Device Register Configuration Script for EVM Setup
    3. 8.3 What to Do and What Not to Do
      1. 8.3.1 187
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 ドキュメントの更新通知を受け取る方法
    3. 11.3 サポート・リソース
    4. 11.4 Trademarks
    5. 11.5 静電気放電に関する注意事項
    6. 11.6 用語集
  13. 12Revision History
  14. 13Mechanical, 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

7.3.6.4 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 7-17 shows the predefined –3-dB cutoff frequencies available that can be set by using the HPF_SEL[1:0] register bits of P0_R107. Additionally, to achieve a custom –3-dB 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 7-17 illustrates a frequency response plot for the HPF filter.

Table 7-17 HPF Programmable Settings
P0_R107_D[1:0] : HPF_SEL[1:0]-3-dB CUTOFF FREQUENCY SETTING-3-dB CUTOFF FREQUENCY AT 16-kHz SAMPLE RATE-3-dB CUTOFF FREQUENCY AT
48-kHz SAMPLE RATE
00Programmable 1st-order IIR filterProgrammable 1st-order IIR filterProgrammable 1st-order IIR filter
01 (default)0.00025 × fS4 Hz12 Hz
100.002 × fS32 Hz96 Hz
110.008 × fS128 Hz384 Hz

 

GUID-3DA4891F-9467-4644-921B-98474D40A913-low.gifFigure 7-17 HPF Filter Frequency Response Plot

Equation 1 gives the transfer function for the first-order programable IIR filter:

Equation 1. GUID-467C00D0-DF25-47F8-AFD0-8FA0B6BCEFC3-low.gif

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 7-18 to achieve the desired frequency response for high-pass filtering or any other desired filtering. If HPF_SEL[1:0] are set to 2'b00, the host device must write these coefficients values for the desired frequency response before powering-up any ADC channel for recording. Table 7-18 shows the filter coefficients for the first-order IIR filter.

Table 7-18 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)N00x7FFFFFFFP4_R72-R75
N10x00000000P4_R76-R79
D10x00000000P4_R80-R83