SLAS763C August   2012  – October 2018 PCM5121 , PCM5122

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified System Diagram
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
    1. 6.0.1 RHB Package I2C Mode (MODE1 tied to DGND and MODE2 tied to DVDD) Top View
    2. 6.0.2 RHB Package SPI Mode (MODE1 tied to DVDD) Top View
    3. 6.0.3 RHB Package Hardwired Mode (MODE1 tied to DGND, MODE2 tied to DGND) Top View
    4.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements: SCK Input
    7. 7.7 Timing Requirements: XSMT
    8. 7.8 Switching Characteristics
    9. 7.9 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Terminology
      2. 8.3.2 Audio Data Interface
        1. 8.3.2.1 Audio Serial Interface
        2. 8.3.2.2 PCM Audio Data Formats
        3. 8.3.2.3 Zero Data Detect
      3. 8.3.3 XSMT Pin (Soft Mute / Soft Un-Mute)
      4. 8.3.4 Audio Processing
        1. 8.3.4.1 PCM512x Audio Processing
          1. 8.3.4.1.1 Overview
          2. 8.3.4.1.2 Software
        2. 8.3.4.2 Interpolation Filter
        3. 8.3.4.3 Fixed Audio Processing Flow (Program 5)
          1. 8.3.4.3.1 Filter Programming Changes
          2. 8.3.4.3.2 Processing Blocks – Detailed Descriptions
          3. 8.3.4.3.3 Biquad Section
          4. 8.3.4.3.4 Dynamic Range Compression
          5. 8.3.4.3.5 Stereo Mixer
          6. 8.3.4.3.6 Stereo Multiplexer
          7. 8.3.4.3.7 Mono Mixer
          8. 8.3.4.3.8 Master Volume Control
          9. 8.3.4.3.9 Miscellaneous Coefficients
      5. 8.3.5 DAC Outputs
        1. 8.3.5.1 Analog Outputs
        2. 8.3.5.2 Recommended Output Filter for the PCM512x
        3. 8.3.5.3 Choosing Between VREF and VCOM Modes
          1. 8.3.5.3.1 Voltage Reference and Output Levels
          2. 8.3.5.3.2 Mode Switching Sequence, from VREF Mode to VCOM Mode
        4. 8.3.5.4 Digital Volume Control
          1. 8.3.5.4.1 Emergency Ramp-Down
        5. 8.3.5.5 Analog Gain Control
      6. 8.3.6 Reset and System Clock Functions
        1. 8.3.6.1 Clocking Overview
        2. 8.3.6.2 Clock Slave Mode With Master and System Clock (SCK) Input (4 Wire I2S)
        3. 8.3.6.3 Clock Slave Mode With BCK PLL to Generate Internal Clocks (3-Wire PCM)
        4. 8.3.6.4 Clock Generation Using the PLL
        5. 8.3.6.5 PLL Calculation
          1. 8.3.6.5.1 Examples:
            1. 8.3.6.5.1.1 Recommended PLL Settings
        6. 8.3.6.6 Clock Master Mode from Audio Rate Master Clock
        7. 8.3.6.7 Clock Master from a Non-Audio Rate Master Clock
    4. 8.4 Device Functional Modes
      1. 8.4.1 Choosing a Control Mode
        1. 8.4.1.1 Software Control
          1. 8.4.1.1.1 SPI Interface
            1. 8.4.1.1.1.1 Register Read and Write Operation
          2. 8.4.1.1.2 I2C Interface
            1. 8.4.1.1.2.1 Slave Address
            2. 8.4.1.1.2.2 Register Address Auto-Increment Mode
            3. 8.4.1.1.2.3 Packet Protocol
            4. 8.4.1.1.2.4 Write Register
            5. 8.4.1.1.2.5 Read Register
            6. 8.4.1.1.2.6 Timing Characteristics
      2. 8.4.2 VREF and VCOM Modes
    5. 8.5 Programming
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
    1. 10.1 Power Supply Distribution and Requirements
    2. 10.2 Recommended Powerdown Sequence
      1. 10.2.1 XSMT = 0
      2. 10.2.2 Clock Error Detect
      3. 10.2.3 Planned Shutdown
      4. 10.2.4 Unplanned Shutdown
    3. 10.3 External Power Sense Undervoltage Protection Mode
    4. 10.4 Power-On Reset Function
      1. 10.4.1 Power-On Reset, DVDD 3.3-V Supply
      2. 10.4.2 Power-On Reset, DVDD 1.8-V Supply
    5. 10.5 PCM512x Power Modes
      1. 10.5.1 Setting Digital Power Supplies and I/O Voltage Rails
      2. 10.5.2 Power Save Modes
      3. 10.5.3 Power Save Parameter Programming
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Register Maps
    1. 12.1 PCM512x Register Map
      1. 12.1.1 Detailed Register Descriptions
        1. 12.1.1.1 Register Map Summary
        2. 12.1.1.2 Page 0 Registers
        3. 12.1.1.3 Page 1 Registers
        4. 12.1.1.4 Page 44 Registers
        5. 12.1.1.5 Page 253 Registers
      2. 12.1.2 PLL Tables for Software Controlled Devices
      3. 12.1.3 Coefficient Data Formats
      4. 12.1.4 Power Down and Reset Behavior
  13. 13Device and Documentation Support
    1. 13.1 Development Support
    2. 13.2 Documentation Support
    3. 13.3 Related Links
    4. 13.4 Receiving Notification of Documentation Updates
    5. 13.5 Community Resources
    6. 13.6 Trademarks
    7. 13.7 Electrostatic Discharge Caution
    8. 13.8 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Pin Functions

PIN I/O DESCRIPTION
NAME MODE, NO.
I2C SPI HW
CPVDD 1 1 1 - Charge pump power supply, 3.3 V
CAPP 2 2 2 O Charge pump flying capacitor terminal for positive rail
CPGND 3 3 3 - Charge pump ground
CAPM 4 4 4 O Charge pump flying capacitor terminal for negative rail
VNEG 5 5 5 O Negative charge pump rail terminal for decoupling, –3.3 V
OUTL 6 6 6 O Analog output from DAC left channel
OUTR 7 7 7 O Analog output from DAC right channel
AVDD 8 8 8 - Analog power supply, 3.3 V
AGND 9 9 9 - Analog ground
VCOM 10 10 – O I2C, SPI VCOM output (optional mode selected by register; default setting is VREF mode.) When in VREF mode (default), this pin ties to GND. When in VCOM mode, decoupling capacitor to GND is required.
DEMP – – 10 I HW DEMP: De-emphasis control for 44.1-kHz sampling rate: Off (Low) / On (High)
SDA 11 – – I/O I2C Data for I2C(1)(2)
MOSI – 11 – I SPI Input data for SPI(2)
ATT2 – – 11 HW Digital gain and attenuation control pin
SCL 12 – – I I2C Input clock for I2C(2)
MC – 12 – SPI Input clock for SPI(2)
ATT1 – – 12 HW Digital gain and attenuation control pin
GPIO5 13 13 – I/O I2C, SPI General purpose digital input and output port (3)
ATT0 – – 13 HW Digital gain and attenuation control pin
GPIO4 14 14 – I/O I2C, SPI General purpose digital input and output port (3)
MAST – – 14 HW I2S Master clock select pin : Master (High) BCK/LRCK outputs, Slave (Low) BCK/LRCK inputs
GPIO3 15 15 – I/O I2C, SPI General purpose digital input and output port (3)
AGNS – – 15 HW Analog gain selector : 0-dB 2-VRMS output (Low), –6-dB 1-VRMS output (High)
ADR2 16 – – I/O I2C 2nd LSB address select bit for I2C
GPIO2 – 16 – SPI General purpose digital input and output port
DOUT – – 16 O HW General Purpose Output (Low level)
MODE1 17 17 17 I Mode control selection pin (2)
MODE1 = Low, MODE2 = Low : Hardwired mode
MODE1 = Low, MODE2 = High: I2C mode
MODE1 = High: SPI mode
MODE2 18 – 18 I2C, HW MODE2
MS – 18 – I SPI MS pin (chip select for SPI)
GPIO6 19 19 – I/O I2C, SPI General purpose digital input and output port
FLT – – 19 I HW Filter select : Normal latency (Low) / Low latency (High)
SCK 20 20 20 I System clock input(2)
BCK 21 21 21 I/O Audio data bit clock input (slave) or output (master)(2)
DIN 22 22 22 I Audio data input(2)
LRCK 23 23 23 I/O Audio data word clock input (slave) or output (master)(2)
ADR1 24 – – I/O I2C LSB address select bit for I2C
MISO (GPIO1) – 24 – SPI Primary output data for SPI readback. Secondary; general purpose digital input/output port controlled by register
FMT – – 24 HW Audio format selection : I2S (Low) / Left justified (High)
XSMT 25 25 25 I Soft mute control Soft mute(2) (Low) / soft un-mute (High)
LDOO 26 26 26 - Internal logic supply rail terminal for decoupling, 1.8 V
DGND 27 27 27 - Digital ground
DVDD 28 28 28 - Digital power supply, 3.3 V or 1.8 V
(1) Open-drain configuration in out mode.
(2) Failsafe LVCMOS Schmitt trigger input.
(3) Internal Pulldown