McBSP RS-232 output polarity

Leonard Jowers86084

On 5409. Output looks great. Can drive a PC directly from it but my TTL to convertor(s) inverts the signal. How do I reverse the polarity of the output (BDX). Same for BDR.

over 11 years ago

0 Sivaraj Kuppuraj over 11 years ago

TI__Mastermind 35645 points

Hi,

Team is working on and will address your request shortly.

Thanks & regards,

Sivaraj K

0 Steve Tsang over 11 years ago in reply to Sivaraj Kuppuraj

TI__Mastermind 23785 points

You might have to consider using external inverter logic

Regards.

0 Leonard Jowers86084 over 11 years ago in reply to Steve Tsang

Intellectual 650 points

Thanks.

I might have to do so, but I hope not.

McBSP has so many features that surely I am just missing it.

The reason I have this issue is that the TTL/RS-232 converters I have found invert the signal. Whereas the PC can accept my DSP's 3.3V characters direct connect on a short cable, I am too concerned about overvoltage to connect directly to receive.

Are you aware of such a converter that does not invert the signal?

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McBSP RS-232 output polarity