TIDUEV2 October   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Differences Between Audio DACs and Precision DACs
      2. 2.2.2 Right-Justified I2S to Daisy-Chained SPI Conversion
    3. 2.3 Highlighted Products
      1. 2.3.1 DAC11001
      2. 2.3.2 OPA1656
      3. 2.3.3 OPA1622
      4. 2.3.4 OPA2828
    4. 2.4 System Design Theory
      1. 2.4.1 Output Glitch
      2. 2.4.2 Sample Rate Dependence in Precision DACs
      3. 2.4.3 System Noise
      4. 2.4.4 DAC11001A vs DAC11001B
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Required External Power Supplies
      2. 3.1.2 Jumper Definitions
      3. 3.1.3 Selecting I2S Source
        1. 3.1.3.1 USB I2S Source
        2. 3.1.3.2 SPDIF I2S Source
        3. 3.1.3.3 External PSIA I2S Source
    2. 3.2 Software Requirements
      1. 3.2.1 Installing the XMOS USB 2.0 Driver
      2. 3.2.2 Setting USB Sample Rate
    3. 3.3 Testing and Results
      1. 3.3.1 Measuring Total Harmonic Distortion and Noise
      2. 3.3.2 THD and THD+N Results
      3. 3.3.3 Measuring Dynamic Range
      4. 3.3.4 Dynamic Range Results
      5. 3.3.5 Measuring Signal-to-Noise Ratio
      6. 3.3.6 SNR Results
  10. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout Recommendations
      1. 4.3.1 Layout Prints
    4. 4.4 Altium Project
    5. 4.5 Gerber Files
    6. 4.6 Assembly Drawings
  11. 5Related Documentation
    1. 5.1 Support Resources
    2. 5.2 Trademarks
  12. 6About the Author

3.1.2 Jumper Definitions

Table 3-2 details the jumper definitions.

Table 3-2 Jumper Definitions
JUMPERNAMEDESCRIPTION
J1, J2 S/PDIF Format Selection

FMT1 SHORT, FMT0 SHORT: 16-bit, MSB-first, right-justified

FMT1 SHORT, FMT0 OPEN: 24-bit, MSB-first, right-justified. DEFAULT, this is the only supported format from the TIDA-060031.

FMT1 OPEN, FMT0 SHORT: 24-bit MSB-first, left-justified

FMT1 OPEN, FMT0 OPEN: 24-bit, MSB-first, I2S
J10 External LDAC Selection

SHORT: Short LDAC to ground.

OPEN: LDAC is pulled up to 3.3V.
J11USB Power Selection

SHORT 1-2 (5V-IN): J12 is used as the +5V input to the left side of board.

SHORT 2-3 (5V-USB): Recommended, the USB input is used to source the left side of board.

J13 BCLK Selection

SHORT 2-3: The USB or S/PDIF BCLK input is selected as the I2S Source.

External connection to 1-2: Pin 1 is ground. This allows an external I2S BCLK source (such as a PSIA) to be connected to the EVM.
J14 MCLK Selection

SHORT 2-3: The USB or S/PDIF MCLK input is selected as the I2S Source. This is not needed on the TIDA-060031 as no MCLK signal is used.

External connection to 1-2: Pin 1 is ground. This allows an external I2S source (such as a PSIA) to be connected to the EVM.
J15 DIN Selection

SHORT 2-3: The USB or S/PDIF DIN input is selected as the I2S source.

External connection to 1-2: Pin 1 is ground. This allows an external I2S DIN source (such as a PSIA) to be connected to the EVM.
J16 LRCK Selection

SHORT 2-3: The USB or S/PDIF LRCK input is selected as the I2S Source.

External connection to 1-2: Pin 1 is ground. This allows an external I2S LRCK source (such as a PSIA) to be connected to the EVM.
J17 DIR9001 (S/PDIF) Input Select

SHORT: Connects the DIR9001 input to the I2S data path.

OPEN: Connects the USB I2S source to the I2S data path.
J19I2S Target SelectNot supported on the TIDA-060031, leave open.
J20I2S TDM Mode SelectNot supported on the TIDA-060031, leave open.
J21 XMOS High-Speed USB SHORT: Allows the TIDA-060031 to be detected as a USB2.0 device and to support 192kHz sample rates.
J22 JTAG Input This header allows for JTAG inputs.
J24SPI Source Select

SHORT: The SPI output of the I2S to SPI conversion circuit is connected to the DAC11001A devices.

OPEN: The SPI input from the SPI input bridge (J25) is connected to the DAC11001A devices.

Table 3-3 Input and Output Connectors
JUMPERNAMEDESCRIPTION
J5Headphone OutputHeadphone output. Combines the left and right DAC output.
J6 Left-Side Phonograph Jack Left-side line output.
J7 Right-Side Phonograph Jack Right-side line output.
J12 5V Digital Input 5V DC power jack for the digital side.
J23 USB Input USB input. Leave unplugged if not required.
Table 3-4 I2S, SPI, GPO, and Power Bridge
JUMPERNAMEDESCRIPTION
J8I2S Connection BridgeThis connection allows I2S inputs to be connected to the DAC and support circuitry. The TIDA-060031 reference design only requires LRCK, BCLK, and DIN.
J9I2C Connection BridgeThe TIDA-060031 reference design does not use I2C.
J18 I2S to Ground This header connects the I2S signals to ground. These connections can be left unpopulated.
J25SPI Connection BridgeThis connection allows the XMOS controller to generate SPI for configuration of the DAC11001A devices. By default, the reference design does not require configuration. Specialized software is needed to operate the SPI. By default, these connections can be left unpopulated.
J26GPO Connection BridgeThis connection allows the XMOS controller to set a few control lines in use with SPI. By default, these can be left unpopulated.
J27 SPI Input This connection can be used to bypass the I2S circuitry if SPI is used instead.
J28 PICO-LDAC to GND This connection shorts SPI PICO and LDAC to ground.
J29Power Connection BridgeThis connection allows power to be shared between the reference design and the USB controller. By default, this connection can be left unpopulated. A jumper can be placed on J29.1-2 (3.3V) to power the 3.3V circuitry on the left side of the board. This is useful if an external or S/PDIF input is being used, as the USB input is undesired.