Benutzerhandbuch für Texas Instruments PCM5122 Evaluation Module PCM5122EVM-U

Inhaltsverzeichnis

• FEATURES

  1
• OTHER KEY FEATURES

  2
• APPLICATIONS

  2
• DESCRIPTION

  2
• DEVICE INFORMATION

  3
  • PCM514x pin assignments-1 MODE1 tied DVDD : SPI mode

    3
  • PCM514x pin assignments-2 MODE1 tied DGND and MODE2 tied DVDD : I2C mode

    5
  • PCM514x pin assignments-3 MODE1 tied DGND and MODE2 tied DGND : Hardwired mode

    6
• ABSOLUTE MAXIMUM RATINGS

  8
• THERMAL CHARACTERISTICS

  8
• ELECTRICAL CHARACTERISTICS

  9
• TYPICAL CHARACTERISTICS

  13
• APPLICATION INFORMATION

  16
  • Typical Application Circuits

    16
  • Analog Outputs

    19
    • Voltage Reference and Ouptut Levels

      19
    • Mode Switching Sequence, From VREF Mode to VCOM Mode

      19
  • Recommended Output Filter for the PCM514x

    20
  • Reset and System Clock Functions

    20
  • Power-On Reset Function

    20
  • System Clock Input

    22
  • System Clock PLL Mode

    23
  • Clock Generation and PLL

    23
  • PLL Calculation

    25
    • Examples

      25
  • Audio Data Interface

    35
    • Audio Serial Interface

      35
    • PCM Audio Data Formats and Timing

      36
  • Function Descriptions

    41
  • PCM514x Audio Processing Options

    41
    • Overview

      41
    • Software

      41
  • Interpolation Filter

    42
  • Fixed Audio Processing Flow (Program 5)

    55
    • Processing Blocks – Detailed Descriptions

      55
    • Biquad Section

      56
  • Dynamic Range Compression

    58
  • Stereo Mixer

    60
  • Stereo Multiplexer

    60
  • Mono Mixer

    61
  • Master Volume Control

    61
  • Miscellaneous Coefficients

    62
  • Analog Gain Control

    62
  • Digital Volume Control

    62
    • Emergency Ramp Down

      63
  • Zero Data Detect

    63
  • Power Save Modes

    64
  • Power Save Parameter Programming

    65
  • XSMT Pin (Soft Mute / Soft Un-Mute)

    65
  • External Power Sense Undervoltage Protection mode (supported only when DVDD = 3.3V)

    66
  • Recommended Powerdown Sequence

    67
    • Planned Shutdown

      67
    • Unplanned Shutdown

      68
  • Software Control

    68
  • SPI Interface

    68
  • Register Read/Write Operation

    69
  • I2C Interface

    72
    • Slave Address

      72
    • Register Address Auto-Increment Mode

      72
    • Packet Protocol

      72
    • Write Register

      73
    • Read Register

      73
    • Timing Characteristics

      73
  • PCM514x Register Map

    75
    • Detailed Register Descriptions

      80