TMS320F28375D: IBIS Model Question

Andrew Miller

Part Number: TMS320F28375D

Team,

Pins E18 and E19 seem to have some undocumented functionality.

It seems that maybe these were intended to be a second USB port or something.

If I then look at the GPIOUSBV4_NFS_7LM model there are several options for the I/O configuration.

Which of these is the C2000 using as the I/O configuration if using these pins as EMIF address lines A7 and A8?

Thanks,

Andy

0 Devin Cottier over 6 years ago

Hi Andrew,

The IBIS model expert is out-of-office through today. Please expect a response tomorrow.

0 Peter Galicki over 6 years ago in reply to Devin Cottier

Andrew,

I am looking at your question right now, should be getting back to you shortly

REgards,
PEter

0 Peter Galicki over 6 years ago in reply to Peter Galicki

Andrew,

Out of the 10 buffers listed under this component the following two are most likely used for EMIF A7, A8 signals:

GPIOUSB_WK_PU_ON_3P3 Cell operated at 3.3(nom)

|GPIOUSB_WK_PU_ON_3P3; WEAK_PULLUP_ON

USB_DRVR_4MA_PUPDOFF Cell operated at 3.3(nom)

|USB_DRVR_4MA_PUPDOFF

Next, I am going to consult with our design team to confirm which one is it. I should be getting back to you in the next day or two.

Regards,
Peter

0 Peter Galicki over 6 years ago in reply to Peter Galicki

Andrew,

I just got a word from our design team that they are working on your question, should have an answer for you sometime today.

Regards,
PEter

0 Peter Galicki over 6 years ago in reply to Peter Galicki

Andrew,

The recommendation from design is to use this buffer for modeling EMIF signals A7 and A8:

USB_DRVR_4MA_PUPDOFF Cell operated at 3.3(nom)

|USB_DRVR_4MA_PUPDOF

REgards,
PEter

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