Texas Instruments TPS65988EVM, Руководство пользователя

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7.2 Debugging the EVM
This section discusses various debugging examples. Testing and debugging approaches on the EVM can be
applied to an actual system to help identify any issues.
7.2.1 Connection Not Established
The following checks help resolve issues when connecting the EVM to another EVM or USB Type-C device and
no status LEDs are on:
• Verify that a firmware image is loaded in on the TPS65988 using the TPS65988 Configuration Tool
• Verify the CC lines are toggling for Dual-Role Port functionality (see Figure 7-3 )
• Verify the following system supplies:
– System_3V3 and VIN_3V3: 3.3 V
– System_5V and PP_CABLE: 5 V
– Barrel jack and SYS_PWR: 20 V
– LDO_3V3: 3.3 V
– LDO_1V8: 1.8 V
• Verify that the devices connected are compatible. The following are some of the compatible connections:
– Dual-Role Port → UFP
– Dual-Role Port → DFP
– DFP → UFP
• Verify that VBUS is reaching 5 V when connected, (see Figure 7-4 )
Figure 7-3. DRP CC1 and CC2 Toggling
Figure 7-4. USB Type-C ™ Connection and VBUS
www.ti.com Connecting the EVM
SLVUB62B – JUNE 2017 – REVISED NOVEMBER 2020
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TPS65988 Evaluation Module 35
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