CC2640R2F: How to read AGC value

Guy Kaplan

Prodigy 180 points

Part Number: CC2640R2F

I was wondering if there is any way to read the current value of the AGC (Automatic Gain Control) on the CC2640R2F.

I could not find anything related to AGC by looking at the reference manual.

Thanks!

over 7 years ago

0 SVS over 7 years ago

TI__Genius 9705 points

Hi,

What mode are you operating in?
There is no straight forward access to reading AGC value. However, overrides can be used to configure AGC settings and we can advise better if you share the reason you are trying to access AGC value.

Regards,

0 Guy Kaplan over 7 years ago in reply to SVS

Prodigy 180 points

We are trying to look at the timings between two BLE events (using RFC_GPO attached to an interrupt) and we suspect that the AGC level has some effect on the time we measure.
It would be great if we were able to get readings of the actual current AGC reading, though if not possible, it would be helpful to just temporarily disable (or freeze) the AGC just so we could test the senario.

0 SVS over 7 years ago in reply to Guy Kaplan

TI__Genius 9705 points

You can freeze AGC gain level using the following override:

HW_REG_OVERRIDE(0x6084, 0x35AA),

The last byte specifies Min and Max AGC gain setting and writing the same value in both nibbles will freeze AGC gain at level specified (0xA in this example).

Regards,

0 Guy Kaplan over 7 years ago in reply to SVS

Prodigy 180 points

That's great thanks!
May I also ask what is the allowed range for the AGC levels?

0 SVS over 7 years ago in reply to Guy Kaplan

TI__Genius 9705 points

0x0 to 0xF.

Regards,

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CC2640R2F: How to read AGC value