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TPS53622: Programming Problem

Allan Fan
Expert 6090 points
Part Number: TPS53622
Other Parts Discussed in Thread: USB-TO-GPIO2

Hi expert,

May I check with you some programming problems for TPS53622? They use below programming schematic and all PINXs are connected with programmer. 

1. We got the CSV which has the action writeByte. But when we execute the action, the SMbus will report NANK. 

U59_1EVTSRCPU.A1G_5S1360000178G_PVNN_PCH_230424.csv

The 0x20 address seems read only. Can we just ignore it?

2. We found 9D and a ton of registers cannot be stored to device even use USB-TO-GPIO2, Do you have any idea?

After power on reset, we read data and get  02 17 01..

  • 0
    TI__Expert 6320 points

    Hi, Allan,

    Your script file (.csv) include PEC byte in data. If you use USB-TO-GPIO2 to send WriteByte command, the adapter handle the PEC byte => you don't need to include PEC byte in writing.

    For example, from your above screenshot: WriteByte 0x20 0x00A4 where:

    value 0x20 is register code

    value 0x00 is data byte

    value 0xA4 is PEC byte (exclude from writing).

    Make sure to set the device's address correctly.

    Regards

    Anne Ngo

    Texas Instruments

  • 0 in reply to Anne Ngo77
    Prodigy 210 points

    Hi Anne,

    We follow the procedure witch you provide. Then device still response NANK. Does it mean the CSV from Fusion Digital Power has program?


    Because CMD 0x20 is read only but the CSV indicate a writebyte command. 

    Sincerely,

    Terry

  • 0 in reply to Terry Lung1
    TI__Expert 6320 points

    Hi, Terry,

    You are correct, 0x20 command is read-only in TPS53622 => attempt to do a write will result in a NACK.

    We recommend importing configuration to device using USER_DATA_xx instead of PMBus commands. Your script file (.csv) created in earlier Fusion GUI (7.7.1) only support exporting script file using PMBus commands only, and has error to include 0x20 command in the script.

    Please re-create the script file using latest GUI 7.9.1 on TI website (https://www.ti.com/tool/FUSION_DIGITAL_POWER_DESIGNER). This GUI supports exporting "USER_DATA Programming script".

    Regards

    Anne Ngo

    Texas Instruments