SLDU019B December   2015  – March 2016 PGA450-Q1

 

  1.   PGA450Q1EVM-S User's Guide and TIDA-00151 UART Demo Instructional
    1.     Trademarks
    2. 1 Introduction
    3. 2 Setup and Operation
      1. 2.1 Input and Output Connectors
      2. 2.2 Basic Operation
        1. 2.2.1 Programming the PGA450-Q1 DEVRAM or OTP Memory
        2. 2.2.2 Programming the PGA450-Q1 EEPROM
        3. 2.2.3 Testing the UART Connection With the TI GER Board
      3. 2.3 UART Command Listing
    4. 3 Software
      1. 3.1 IDE Output File Configuration
        1. 3.1.1 Setup for DEVRAM Output File
        2. 3.1.2 Setup for OTP Output File
      2. 3.2 Interface Descriptions
        1. 3.2.1 UART Interface
        2. 3.2.2 LIN Interface
        3. 3.2.3 Serial-Peripheral Interface
    5. 4 Schematic, Bill of Materials, and Layout
      1. 4.1 Schematic
      2. 4.2 Bill of Materials
        1. 4.2.1 BOM
      3. 4.3 Board Layout and Component Placement
    6. 5 References
  2.   Revision History

2.2.2 Programming the PGA450-Q1 EEPROM

The PGA450Q1EVM-S is preloaded with the EEPROM values listed in Table 2. These instructions are provided in the event that the user prefers to modify the EEPROM using the PGA450Q1EVM GUI, rather than the corresponding UART command. Use the steps that follow to program the device for EEPROM memory.

  1. Assuming the MCU status is still set to MICRO IS IN RESET, go to the EEPROM tab, and enter the register values for addresses 0x00 through 0x1F as listed in Table 3.

    2. The values at 0x00 to 0x1F are the threshold values used in software. TI recommends that the user begins with the example values provided, and then adjusts these values later as necessary.

    The value at address 0x1F is the sensor address.

  2. Click the WRITE SELECTED button. To ensure the threshold values are written correctly, click the READ ALL button.
  3. Click the PROGRAM EEPROM button to store the threshold values.
  4. Click the Reload button. To ensure the threshold values have been written correctly and retained, click the READ ALL button. The EEPROM table should appear as shown in Figure 3.

    5. Table 3. EEPROM Register Map Values

    Register Address Register Value Description
    0x00 0xFF Threshold level 0
    0x01 0xD7 Threshold level 1
    0x02 0x95 Threshold level 2
    0x03 0x84 Threshold level 3
    0x04 0x62 Threshold level 4
    0x05 0x62 Threshold level 5
    0x06 0x52 Threshold level 6
    0x07 0x78 Where in FIFO to apply threshold level 7 defined at EEPROM address 0x08 from to the end of the FIFO. Long mode (most significant hex) multiplied by 40 [interval 40 to 600]. Short mode (least significant hex) multiplied by 8 [interval 8 to 120].
    0x08 0x64 Threshold level 7, the fixed level of threshold to end of FIFO. Long mode and short mode multiplied by 5 and 1 respectively.
    0x09 0x95 Threshold ignore count from beginning of FIFO for long (most significant hex) and short (least significant hex) modes respectively.
    0x0A 0x43 1-6 change interval of the threshold level across FIFO for long mode (most significant hex) multiplied by 8 [interval 8 to 120]. Short mode (least significant hex) multiplied by 2 [interval 2 to 15].
    0x0B 0x12 PULSE_CNTA
    0x0C 0xFF BLANKING_TIMER
    0x0D 0x06 FIFO_CTRL
    0x0E 0x32 DOWNSAMPLE
    0x0F 0x01 CONTROL_1
    0x10 0x00 BURST_MODE
    0x11 0x8A BURST_ONA_LSB
    0x12 0x8A BURST_OFFA_LSB
    0x13 0x05 DEADTIME
    0x14 0x09 SAT_DEGLITCH
    0x15 0x03 BPF_B1_MSB
    0x16 0x2D BPF_B1_LSB
    0x17 0xEC BPF_A2_MSB
    0x18 0x3D BPF_A2_LSB
    0x19 0xF9 BPF_A3_MSB
    0x1A 0xA5 BPF_A3_LSB
    0x1B 0x35 LPF_B1_MSB
    0x1C 0xDD LPF_B1_LSB
    0x1D 0x14 LPF_A2_MSB
    0x1E 0x46 LPF_A2_LSB
    0x1F 0x01 Sensor address
    gui_eeprom_registers_sldu019.png
    1. The Program EEPROM button programs the EEPROM cache into the EEPROM memory. The values displayed in the GUI are transferred to the cache before being programmed.
    2. The Reload EEPROM button copies the EEPROM memory into the EEPROM cache. The values in the GUI are then updated.
    Figure 3. EEPROM Registers Programmed Correctly