TPS65988: Firmware and programming clarification?

Hello Julio,

1. External SPI/EEPROM memory needed for configuration? then how to program the memory and let us know the availability of the tools for both HUB and PD controller.

• Yes, you must have an external SPI flash populated in your system for the PD controller to load the configuration. You use the application configuration tool generate the binary image which you then program to the external flash for the PD controller to read. If you go to the webpage for the TPS65987EVM, you will find list, stating the steps on how to evaluate and use the TPS65988 and TPS65987D

2. Is it possible to configure the upstream and downstream port without the external memory?

• No, you must use an external SPI flash for the TPS65988 to load

3.  Does the Existing Firmware Handle charging the upstream port and simultaneous data transfer from Upstream to the downstream port

• Yes, the TPS65988 is capable of being a power sink and DFP. The only time this would not be possible is if TPS65988 is in a dead battery condition (powered from VBUS) and the dead battery flag has not been cleared. The TPS65988 will reject and data role swaps since it cannot source VCONN through the CC lines

 4.  Does the Existing Firmware Handle External Power to VBUS Power switching without Resetting the device ?

• Would you be able to elaborate on this? Not sure I understand the question

Hi Adam,

Thanks for the help. Regarding question 4: 

The device will operate with an 5V External Supply , Where the  Host in the upstream port  (DRP)is  charging from 5V supply and data transfer is happening between Upstream and downsreamport device (pen drive) simultaneously.In case an external Power supply is suddenly turned off, the Board should continue working with VBUS Power from the upstream port and continue transferring data without reset occurrence due to power swap.
      Will this use case be handled by the firmware ?