SBASB80 October   2024 TAA3040

ADVANCE INFORMATION  

  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: I2C Interface
    7. 5.7  Switching Characteristics: I2C Interface
    8. 5.8  Timing Requirements: SPI Interface
    9. 5.9  Switching Characteristics: SPI Interface
    10. 5.10 Timing Requirements: TDM, I2S or LJ Interface
    11. 5.11 Switching Characteristics: TDM, I2S or LJ Interface
    12. 5.12 Timing Requirements: PDM Digital Microphone Interface
    13. 5.13 Switching Characteristics: PDM Digial Microphone Interface
    14. 5.14 Timing Diagrams
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Serial Interfaces
        1. 6.3.1.1 Control Serial Interfaces
        2. 6.3.1.2 Audio Serial Interfaces
          1. 6.3.1.2.1 Time Division Multiplexed Audio (TDM) Interface
          2. 6.3.1.2.2 Inter IC Sound (I2S) Interface
          3. 6.3.1.2.3 Left-Justified (LJ) Interface
        3. 6.3.1.3 Using Multiple Devices With Shared Buses
      2. 6.3.2 Phase-Locked Loop (PLL) and Clock Generation
      3. 6.3.3 Input Channel Configurations
      4. 6.3.4 Reference Voltage
      5. 6.3.5 Programmable Microphone Bias
      6. 6.3.6 Signal-Chain Processing
        1. 6.3.6.1 Programmable Channel Gain and Digital Volume Control
        2. 6.3.6.2 Programmable Channel Gain Calibration
        3. 6.3.6.3 Programmable Channel Phase Calibration
        4. 6.3.6.4 Programmable Digital High-Pass Filter
        5. 6.3.6.5 Programmable Digital Biquad Filters
        6. 6.3.6.6 Programmable Channel Summer and Digital Mixer
        7. 6.3.6.7 Configurable Digital Decimation Filters
          1. 6.3.6.7.1 Linear Phase Filters
            1. 6.3.6.7.1.1 Sampling Rate: 8 kHz or 7.35 kHz
            2. 6.3.6.7.1.2 Sampling Rate: 16 kHz or 14.7 kHz
            3. 6.3.6.7.1.3 Sampling Rate: 24 kHz or 22.05 kHz
            4. 6.3.6.7.1.4 Sampling Rate: 32 kHz or 29.4 kHz
            5. 6.3.6.7.1.5 Sampling Rate: 48 kHz or 44.1 kHz
            6. 6.3.6.7.1.6 Sampling Rate: 96 kHz or 88.2 kHz
            7. 6.3.6.7.1.7 Sampling Rate: 192 kHz or 176.4 kHz
            8. 6.3.6.7.1.8 Sampling Rate: 384 kHz or 352.8 kHz
            9. 6.3.6.7.1.9 Sampling Rate 768 kHz or 705.6 kHz
          2. 6.3.6.7.2 Low-Latency Filters
            1. 6.3.6.7.2.1 Sampling Rate: 16 kHz or 14.7 kHz
            2. 6.3.6.7.2.2 Sampling Rate: 24 kHz or 22.05 kHz
            3. 6.3.6.7.2.3 Sampling Rate: 32 kHz or 29.4 kHz
            4. 6.3.6.7.2.4 Sampling Rate: 48 kHz or 44.1 kHz
            5. 6.3.6.7.2.5 Sampling Rate: 96 kHz or 88.2 kHz
            6. 6.3.6.7.2.6 Sampling Rate 192 kHz or 176.4 kHz
          3. 6.3.6.7.3 Ultra-Low-Latency Filters
            1. 6.3.6.7.3.1 Sampling Rate: 16 kHz or 14.7 kHz
            2. 6.3.6.7.3.2 Sampling Rate: 24 kHz or 22.05 kHz
            3. 6.3.6.7.3.3 Sampling Rate: 32 kHz or 29.4 kHz
            4. 6.3.6.7.3.4 Sampling Rate: 48 kHz or 44.1 kHz
            5. 6.3.6.7.3.5 Sampling Rate: 96 kHz or 88.2 kHz
            6. 6.3.6.7.3.6 Sampling Rate 192 kHz or 176.4 kHz
            7. 6.3.6.7.3.7 Sampling Rate 384 kHz or 352.8 kHz
      7. 6.3.7 Automatic Gain Controller (AGC)
      8. 6.3.8 Digital PDM Microphone Record Channel
      9. 6.3.9 Interrupts, Status, and Digital I/O Pin Multiplexing
    4. 6.4 Device Functional Modes
      1. 6.4.1 Hardware Shutdown
      2. 6.4.2 Sleep Mode or Software Shutdown
      3. 6.4.3 Active Mode
      4. 6.4.4 Software Reset
    5. 6.5 Programming
      1. 6.5.1 Control Serial Interfaces
        1. 6.5.1.1 I2C Control Interface
          1. 6.5.1.1.1 General I2C Operation
          2. 6.5.1.1.2 I2C Single-Byte and Multiple-Byte Transfers
            1. 6.5.1.1.2.1 I2C Single-Byte Write
            2. 6.5.1.1.2.2 I2C Multiple-Byte Write
            3. 6.5.1.1.2.3 I2C Single-Byte Read
            4. 6.5.1.1.2.4 I2C Multiple-Byte Read
        2. 6.5.1.2 SPI Control Interface
  8. 7 Register Maps
    1. 7.1 Device Configuration Registers
      1. 7.1.1 Register Descriptions
        1. 7.1.1.1  PAGE_CFG Register (page = 0x00, address = 0x00) [reset = 0h]
        2. 7.1.1.2  SW_RESET Register (page = 0x00, address = 0x01) [reset = 0h]
        3. 7.1.1.3  SLEEP_CFG Register (page = 0x00, address = 0x02) [reset = 0h]
        4. 7.1.1.4  SHDN_CFG Register (page = 0x00, address = 0x05) [reset = 5h]
        5. 7.1.1.5  ASI_CFG0 Register (page = 0x00, address = 0x07) [reset = 30h]
        6. 7.1.1.6  ASI_CFG1 Register (page = 0x00, address = 0x08) [reset = 0h]
        7. 7.1.1.7  ASI_CFG2 Register (page = 0x00, address = 0x09) [reset = 0h]
        8. 7.1.1.8  ASI_CH1 Register (page = 0x00, address = 0x0B) [reset = 0h]
        9. 7.1.1.9  ASI_CH2 Register (page = 0x00, address = 0x0C) [reset = 1h]
        10. 7.1.1.10 ASI_CH3 Register (page = 0x00, address = 0x0D) [reset = 2h]
        11. 7.1.1.11 ASI_CH4 Register (page = 0x00, address = 0x0E) [reset = 3h]
        12. 7.1.1.12 ASI_CH5 Register (page = 0x00, address = 0x0F) [reset = 4h]
        13. 7.1.1.13 ASI_CH6 Register (page = 0x00, address = 0x10) [reset = 5h]
        14. 7.1.1.14 ASI_CH7 Register (page = 0x00, address = 0x11) [reset = 6h]
        15. 7.1.1.15 ASI_CH8 Register (page = 0x00, address = 0x12) [reset = 7h]
        16. 7.1.1.16 MST_CFG0 Register (page = 0x00, address = 0x13) [reset = 2h]
        17. 7.1.1.17 MST_CFG1 Register (page = 0x00, address = 0x14) [reset = 48h]
        18. 7.1.1.18 ASI_STS Register (page = 0x00, address = 0x15) [reset = FFh]
        19. 7.1.1.19 CLK_SRC Register (page = 0x00, address = 0x16) [reset = 10h]
        20. 7.1.1.20 PDMCLK_CFG Register (page = 0x00, address = 0x1F) [reset = 40h]
        21. 7.1.1.21 PDMIN_CFG Register (page = 0x00, address = 0x20) [reset = 0h]
        22. 7.1.1.22 GPIO_CFG0 Register (page = 0x00, address = 0x21) [reset = 22h]
        23. 7.1.1.23 GPO_CFG0 Register (page = 0x00, address = 0x22) [reset = 0h]
        24. 7.1.1.24 GPO_CFG1 Register (page = 0x00, address = 0x23) [reset = 0h]
        25. 7.1.1.25 GPO_CFG2 Register (page = 0x00, address = 0x24) [reset = 0h]
        26. 7.1.1.26 GPO_CFG3 Register (page = 0x00, address = 0x25) [reset = 0h]
        27. 7.1.1.27 GPO_VAL Register (page = 0x00, address = 0x29) [reset = 0h]
        28. 7.1.1.28 GPIO_MON Register (page = 0x00, address = 0x2A) [reset = 0h]
        29. 7.1.1.29 GPI_CFG0 Register (page = 0x00, address = 0x2B) [reset = 0h]
        30. 7.1.1.30 GPI_CFG1 Register (page = 0x00, address = 0x2C) [reset = 0h]
        31. 7.1.1.31 GPI_MON Register (page = 0x00, address = 0x2F) [reset = 0h]
        32. 7.1.1.32 INT_CFG Register (page = 0x00, address = 0x32) [reset = 0h]
        33. 7.1.1.33 INT_MASK0 Register (page = 0x00, address = 0x33) [reset = FFh]
        34. 7.1.1.34 INT_LTCH0 Register (page = 0x00, address = 0x36) [reset = 0h]
        35. 7.1.1.35 BIAS_CFG Register (page = 0x00, address = 0x3B) [reset = 0h]
        36. 7.1.1.36 CH1_CFG0 Register (page = 0x00, address = 0x3C) [reset = 0h]
        37. 7.1.1.37 CH1_CFG1 Register (page = 0x00, address = 0x3D) [reset = 0h]
        38. 7.1.1.38 CH1_CFG2 Register (page = 0x00, address = 0x3E) [reset = C9h]
        39. 7.1.1.39 CH1_CFG3 Register (page = 0x00, address = 0x3F) [reset = 80h]
        40. 7.1.1.40 CH1_CFG4 Register (page = 0x00, address = 0x40) [reset = 0h]
        41. 7.1.1.41 CH2_CFG0 Register (page = 0x00, address = 0x41) [reset = 0h]
        42. 7.1.1.42 CH2_CFG1 Register (page = 0x00, address = 0x42) [reset = 0h]
        43. 7.1.1.43 CH2_CFG2 Register (page = 0x00, address = 0x43) [reset = C9h]
        44. 7.1.1.44 CH2_CFG3 Register (page = 0x00, address = 0x44) [reset = 80h]
        45. 7.1.1.45 CH2_CFG4 Register (page = 0x00, address = 0x45) [reset = 0h]
        46. 7.1.1.46 CH3_CFG0 Register (page = 0x00, address = 0x46) [reset = 0h]
        47. 7.1.1.47 CH3_CFG1 Register (page = 0x00, address = 0x47) [reset = 0h]
        48. 7.1.1.48 CH3_CFG2 Register (page = 0x00, address = 0x48) [reset = C9h]
        49. 7.1.1.49 CH3_CFG3 Register (page = 0x00, address = 0x49) [reset = 80h]
        50. 7.1.1.50 CH3_CFG4 Register (page = 0x00, address = 0x4A) [reset = 0h]
        51. 7.1.1.51 CH4_CFG0 Register (page = 0x00, address = 0x4B) [reset = 0h]
        52. 7.1.1.52 CH4_CFG1 Register (page = 0x00, address = 0x4C) [reset = 0h]
        53. 7.1.1.53 CH4_CFG2 Register (page = 0x00, address = 0x4D) [reset = C9h]
        54. 7.1.1.54 CH4_CFG3 Register (page = 0x00, address = 0x4E) [reset = 80h]
        55. 7.1.1.55 CH4_CFG4 Register (page = 0x00, address = 0x4F) [reset = 0h]
        56. 7.1.1.56 CH5_CFG2 Register (page = 0x00, address = 0x52) [reset = C9h]
        57. 7.1.1.57 CH5_CFG3 Register (page = 0x00, address = 0x53) [reset = 80h]
        58. 7.1.1.58 CH5_CFG4 Register (page = 0x00, address = 0x54) [reset = 0h]
        59. 7.1.1.59 CH6_CFG2 Register (page = 0x00, address = 0x57) [reset = C9h]
        60. 7.1.1.60 CH6_CFG3 Register (page = 0x00, address = 0x58) [reset = 80h]
        61. 7.1.1.61 CH6_CFG4 Register (page = 0x00, address = 0x59) [reset = 0h]
        62. 7.1.1.62 CH7_CFG2 Register (page = 0x00, address = 0x5C) [reset = C9h]
        63. 7.1.1.63 CH7_CFG3 Register (page = 0x00, address = 0x5D) [reset = 80h]
        64. 7.1.1.64 CH7_CFG4 Register (page = 0x00, address = 0x5E) [reset = 0h]
        65. 7.1.1.65 CH8_CFG2 Register (page = 0x00, address = 0x61) [reset = C9h]
        66. 7.1.1.66 CH8_CFG3 Register (page = 0x00, address = 0x62) [reset = 80h]
        67. 7.1.1.67 CH8_CFG4 Register (page = 0x00, address = 0x63) [reset = 0h]
        68. 7.1.1.68 DSP_CFG0 Register (page = 0x00, address = 0x6B) [reset = 1h]
        69. 7.1.1.69 DSP_CFG1 Register (page = 0x00, address = 0x6C) [reset = 40h]
        70. 7.1.1.70 AGC_CFG0 Register (page = 0x00, address = 0x70) [reset = E7h]
        71. 7.1.1.71 IN_CH_EN Register (page = 0x00, address = 0x73) [reset = F0h]
        72. 7.1.1.72 ASI_OUT_CH_EN Register (page = 0x00, address = 0x74) [reset = 0h]
        73. 7.1.1.73 PWR_CFG Register (page = 0x00, address = 0x75) [reset = 0h]
        74. 7.1.1.74 DEV_STS0 Register (page = 0x00, address = 0x76) [reset = 0h]
        75. 7.1.1.75 DEV_STS1 Register (page = 0x00, address = 0x77) [reset = 80h]
        76. 7.1.1.76 I2C_CKSUM Register (page = 0x00, address = 0x7E) [reset = 0h]
    2. 7.2 Programmable Coefficient Registers
      1. 7.2.1 Programmable Coefficient Registers: Page = 0x02
      2. 7.2.2 Programmable Coefficient Registers: Page = 0x03
      3. 7.2.3 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
      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. 8.3.1 182
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Trademarks
    3. 9.3 Electrostatic Discharge Caution
    4. 9.4 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Package Option Addendum
      1. 11.1.1 Packaging Information
      2. 11.1.2 Tape and Reel Information

6.3.2 Phase-Locked Loop (PLL) and Clock Generation

The device has a smart auto-configuration block to generate all necessary internal clocks required for the ADC modulator and the digital filter engine used for signal processing. This configuration is done by monitoring the frequency of the FSYNC and BCLK signal on the audio bus.

The device supports the various output data sample rates (of the FSYNC signal frequency) and the BCLK to FSYNC ratio to configure all clock dividers, including the PLL configuration, internally without host programming. Table 6-6 and Table 6-7 list the supported FSYNC and BCLK frequencies.

Table 6-6 Supported FSYNC (Multiples or Submultiples of 48 kHz) and BCLK Frequencies
BCLK TO FSYNC RATIOBCLK (MHz)
FSYNC
(8 kHz)		FSYNC
(16 kHz)		FSYNC
(24 kHz)		FSYNC
(32 kHz)		FSYNC
(48 kHz)		FSYNC
(96 kHz)		FSYNC (192 kHz)FSYNC (384 kHz)FSYNC (768 kHz)
16Reserved0.2560.3840.5120.7681.5363.0726.14412.288
24Reserved0.3840.5760.7681.1522.3044.6089.21618.432
320.2560.5120.7681.0241.5363.0726.14412.28824.576
480.3840.7681.1521.5362.3044.6089.21618.432Reserved
640.5121.0241.5362.0483.0726.14412.28824.576Reserved
960.7681.5362.3043.0724.6089.21618.432ReservedReserved
1281.0242.0483.0724.0966.14412.28824.576ReservedReserved
1921.5363.0724.6086.1449.21618.432ReservedReservedReserved
2562.0484.0966.1448.19212.28824.576ReservedReservedReserved
3843.0726.1449.21612.28818.432ReservedReservedReservedReserved
5124.0968.19212.28816.38424.576ReservedReservedReservedReserved
10248.19216.38424.576ReservedReservedReservedReservedReservedReserved
204816.384ReservedReservedReservedReservedReservedReservedReservedReserved
Table 6-7 Supported FSYNC (Multiples or Submultiples of 44.1 kHz) and BCLK Frequencies
BCLK TO FSYNC RATIOBCLK (MHz)
FSYNC (7.35 kHz)FSYNC (14.7 kHz)FSYNC (22.05 kHz)FSYNC (29.4 kHz)FSYNC (44.1 kHz)FSYNC (88.2 kHz)FSYNC (176.4 kHz)FSYNC (352.8 kHz)FSYNC (705.6 kHz)
16ReservedReserved0.35280.47040.70561.41122.82245.644811.2896
24Reserved0.35280.52920.70561.05842.11684.23368.467216.9344
32Reserved0.47040.70560.94081.41122.82245.644811.289622.5792
480.35280.70561.05841.41122.11684.23368.467216.9344Reserved
640.47040.94081.41121.88162.82245.644811.289622.5792Reserved
960.70561.41122.11682.82244.23368.467216.9344ReservedReserved
1280.94081.88162.82243.76325.644811.289622.5792ReservedReserved
1921.41122.82244.23365.64488.467216.9344ReservedReservedReserved
2561.88163.76325.64487.526411.289622.5792ReservedReservedReserved
3842.82245.64488.467211.289616.9344ReservedReservedReservedReserved
5123.76327.526411.289615.052822.5792ReservedReservedReservedReserved
10247.526415.052822.5792ReservedReservedReservedReservedReservedReserved
204815.0528ReservedReservedReservedReservedReservedReservedReservedReserved

The status register ASI_STS, P0_R21, captures the device auto detect result for the FSYNC frequency and the BCLK to FSYNC ratio. If the device finds any unsupported combinations of FSYNC frequency and BCLK to FSYNC ratios, the device generates an ASI clock-error interrupt and mutes the record channels accordingly.

The device uses an integrated, low-jitter, phase-locked loop (PLL) to generate internal clocks required for the ADC modulator and digital filter engine, as well as other control blocks. The device also supports an option to use BCLK, GPIO1, or the GPIx pin (as MCLK) as the audio clock source without using the PLL to reduce power consumption. However, the ADC performance may degrade based on jitter from the external clock source, and some processing features may not be supported if the external audio clock source frequency is not high enough. Therefore, TI recommends using the PLL for high-performance applications.

The device also supports an audio bus master mode operation using the GPIO1 or GPIx pin (as MCLK) as the reference input clock source and supports various flexible options and a wide variety of system clocks. More details and information on master mode configuration and operation are discussed in the Configuring and Operating the TLV320ADCx140 as an Audio Bus Master application report.

The audio bus clock error detection and auto-detect feature automatically generates all internal clocks, but can be disabled using the ASI_ERR, P0_R9_D5 and AUTO_CLK_CFG, P0_R19_D6, register bits, respectively. In the system, this disable feature can be used to support custom clock frequencies that are not covered by the auto detect scheme. For such application use cases, care must be taken to ensure that the multiple clock dividers are all configured appropriately. Therefore, TI recommends using the PPC3 GUI for device configuration settings; for more details see the TLV320ADCx140 Evaluation module user's guide and the PurePath™ console graphical development suite.