SPRUJ32 October   2022

 

  1.   C2000 F280013x Series LaunchPad Development Kit
  2.   Trademarks
  3. 1Board Overview
    1. 1.1 Kit Contents
    2. 1.2 Features
    3. 1.3 Specifications
      1. 1.3.1 External Power Supply or Accessory Requirements
    4. 1.4 Using the F280013x LaunchPad™
    5. 1.5 BoosterPack™ Plug-in Modules
    6. 1.6 Hardware Revisions
      1. 1.6.1 Revision A
  4. 2Software Development
    1. 2.1 Software Tools and Packages
    2. 2.2 F280013x LaunchPad™ Demo Program
    3. 2.3 Programming and Running Other Software on the F280013x LaunchPad™
  5. 3Hardware Description
    1. 3.1 Functional Description and Connections
      1. 3.1.1 Microcontroller
      2. 3.1.2 Power Domains
      3. 3.1.3 LEDs
      4. 3.1.4 Encoder Connectors
      5. 3.1.5 CAN
      6. 3.1.6 Boot Modes
      7. 3.1.7 BoosterPack™ Sites
      8. 3.1.8 Analog Voltage Reference Header
      9. 3.1.9 Other Headers and Jumpers
        1. 3.1.9.1 USB Isolation Block
        2. 3.1.9.2 BoosterPack™ Site 2 Power Isolation
        3. 3.1.9.3 Alternate Power
    2. 3.2 Debug Interface
      1. 3.2.1 XDS110 Debug Probe
      2. 3.2.2 XDS110 Output
      3. 3.2.3 Virtual COM Port
    3. 3.3 Alternate Routing
      1. 3.3.1 Overview
      2. 3.3.2 UART Routing
      3. 3.3.3 EQEP Routing
      4. 3.3.4 CAN Routing
      5. 3.3.5 SPI Routing
      6. 3.3.6 X1/X2 Routing
      7. 3.3.7 PWM DAC
  6. 4Board Design
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 BOM
    4. 4.4 LAUNCHXL-F2800137 Board Dimensions
  7. 5Frequently Asked Questions (FAQs)
  8. 6References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design
  9. 7Revision History

3.3.3 EQEP Routing

The LaunchPad has the ability to connect to one independent linear or rotary encoder through the F280013x on-chip eQEP interface: Header J12 is connected to eQEP1. By default, this connection is not active and the GPIOs are routed to the BoosterPack connectors. The 5-V eQEP input signals from the J12 connector are stepped down through a TI SN74LVC8T245 Level Translator (U13) to 3.3V. The signals are then routed through TI SN74LV4053A Triple 2-Channel Analog Multiplexer/Demultiplexer IC (U14). Switch S5 controls the select inputs of the ICs to configure the eQEP signal destinations to be either the J12 connector or BoosterPack headers, as described in Table 3-5.

Table 3-5 QEP Select Table - S5
QEP1 SEL (LEFT) QEP1 Signals (GPIO40/41/39)
0 (down) J12
1 (up) BP Headers