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PostPosted: Fri Aug 27, 2021 12:57 pm 
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The datasheet says this on page 14:

Receiver Echo Mode (Bit 4)
A 1 enables the Receiver Echo Mode and a 0 enables the Receiver Echo Mode.

Is it a typo or is it really impossible to disable echo mode on this chip ?

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PostPosted: Fri Aug 27, 2021 6:18 pm 
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I think it should say,

    A 1 enables the Receiver Echo Mode and a 0 disables the Receiver Echo Mode. [...]

I've never turned on or used echo mode.

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PostPosted: Fri Aug 27, 2021 6:43 pm 
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In such cases it helps looking at the datasheets of the 'sister' chips like the R6551 etc.

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PostPosted: Sat Aug 28, 2021 7:52 am 
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Thanks for the replies. I think my code does not enable echo mode but I still get an output of whatever I send. I will double check everything and try to find where the problem is.

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