SLVUCS6 August   2024 TPS65987DDK

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Items Required for Operation
    2. 2.2 Powering the TPS65987DDKEVM
    3. 2.3 Jumper Configuration
    4. 2.4 Connector Functionality
    5. 2.5 Test Points
    6. 2.6 LEDs
    7. 2.7 Switches
  9. 3Software
    1. 3.1 Software Description
    2. 3.2 Debugging the EVM
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks

2.7 Switches

Table 2-5 and Table 2-6 lists the TPS65987DDKEVM switches. For S1, all six switches must be set to the ON position (to the right) for flashing a project and debugging. For S4 switch, EVM out of the box must have S4->4 (BP_WaitFor3V3_Internal) as on (right). This verifies that the PD controller enables internal power paths in dead battery mode. S4 can be turned off (left) if EVM is configured as source-only. Note that for S4[1, 2, 3] and S4[4, 5, 6], only one switch must be in ON position for each set.

Table 2-5 S4 Switch Bank
Switch (S4)Description
1, 2, 3 OFFI2C address selection: 000b
1 ON OnlyI2C address selection: 001b
2 ON OnlyI2C address selection: 010b
3 ON OnlyI2C address selection: 011b
4, 5, 6 OFFDead battery mode: BP_NoResponse
4 ON OnlyDead battery mode: BP_WaitFor3V3_Internal
5 ON OnlyDead battery mode: BP_WaitFor3V3_External
6 ON OnlyDead battery mode: BP_NoWait
Table 2-6 Push Buttons
DesignatorLabelDescription
S2PD ResetThis switch is a push-button that pulls the HRESET pin (44) of the TPS65987DDK device high when pressed. Releasing the push-button pulls HRESET low again, and the TPS65987DDK device goes through a soft reset, which consists of reloading firmware from RAM. If a valid configuration is present in RAM,then the TPS65987DDK device does not reload configuration from the external flash.
S3Disable Flash ConfigThis push button switch holds the SPI POCI line to GND. Use this button when booting the device. If this button is pressed when the device is booting, then the TPS65987DDK device does not load the configuration from the SPI Flash and instead boots into a default ROM configuration.