TPS2384 EVM GUI - I2C address

Barry Weinberger2

Prodigy 70 points

Other Parts Discussed in Thread: TPS2384

Is there any way to change the I2C address in the TPS2384EVM (REV. A) GUI?

Is the default I2C address = 1?

The software is installed on a Windows 7 64-bit computer

over 9 years ago

0 Eric Wright over 9 years ago

TI__Mastermind 42795 points

Unfortunately, the original source code for the TPS2384EVM GUI cannot be found and is hard-coded for address=0x1.

0 Barry Weinberger2 over 9 years ago in reply to Eric Wright

Prodigy 70 points

Eric,

Thank you very much for your prompt feedback.

Too bad about the software and I'm surprised the GUI didn't support an I2C address field.

The GUI does provides valuable control & feedback. However, I'm connecting the GUI to an embedded TPS2384 controller to debug a built-in test failure, also for which there is no source code :(

Reverse engineers R-us.

Best regards,

Barry

0 Eric Wright over 9 years ago in reply to Barry Weinberger2

TI__Mastermind 42795 points

Barry, when I replied I was only considering the published GUI for this EVM. I had forgotten that we had an engineering version which did support address selection although only for 3 devices (if I recall correctly).

I've attached a zip file containing the .EXE and another text file which should be co-located with the .EXE for the GUI to work. Please give this a try.

TPS2384 EVM 14-08-2006.zip

0 Barry Weinberger2 over 9 years ago in reply to Eric Wright

Prodigy 70 points

Eric,

The text file contains only a single number 94208.

When I try to install the program,

0 Eric Wright over 9 years ago in reply to Barry Weinberger2

TI__Mastermind 42795 points

Barry, the picture didn't come through so I searched our lab PC and believe to have found the installer+files for that GUI. Please give the attached a try.

TPS2384EVM.zip

0 Barry Weinberger2 over 9 years ago in reply to Eric Wright

Prodigy 70 points

Thanks Eric,

The picture in my last response was a Windows 7 error which read;

Run-time error '339':
Component 'bq80xRW.ocx' or one of its dependencies not correctly registered: a file is missing or invalid

I'll try the new files you've sent.

BTW, would you be the main contact for electrical questions regarding the TPS2384? The datasheet is missing input leakage currents for pins SCL and SDA_I. Also output pins SDA_OUT and INTB specify a test current Isink = 10mA with no recommended maximum current.

Thanks for your support.

Best regards,

Barry

0 Barry Weinberger2 over 9 years ago in reply to Barry Weinberger2

Prodigy 70 points

Hi Eric,

We lost touch overt the past few weeks. Thank you for the evaluation software which allowed us to change the I2C address. We were able to verify that the POE controller revisions were 01.

However, I was hoping you could provide some electrical specifications. The TPS2384 datasheet is missing input leakage currents for pins SCL and SDA_I. Also output pins SDA_OUT and INTB specify a test current Isink = 10mA with no recommended maximum current.

Thank you!

0 Eric Wright over 9 years ago in reply to Barry Weinberger2

TI__Mastermind 42795 points

Hello Barry; sorry for the delay on our end. I have a simplified answer and hope that it will suffice.

The SCL and SDAI leakage should be less than 1uA maximum.
Since INTB and SDA_O sink current are tested at 10mA a conservative maximum is 15mA.

Regards, Eric

0 Barry Weinberger2 over 9 years ago in reply to Eric Wright

Prodigy 70 points

Thanks so much Eric!

Best regards,

Barry

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TPS2384 EVM GUI - I2C address