CC2480 default Tx power

Raffaele Iacobelli

Other Parts Discussed in Thread: CC2430, Z-STACK, CC2530

Hi,

My question relates to a previous post on this forum which was never clarified.

The CC2480 has RF test modes which can be enabled via the SYS_TEST_RF command. I've implemented the API function to enabled these and it works, however I need to set the TxPower parameter to match the same power level as per the normal operating mode. It's a requirement for compliance testing of a product.

I would like to know the default Tx power level for the CC2480 under normal operating conditions. Unfortunately I was unable to find this documented anywhere.

Here is the list of settings for SYS_TEST_RF:

TxPower	Output power [dBm]
0xFF	0.6
0xDF	0.5
0xBF	0.3
0x9F	0.2
0x7F	-0.1
0x5F	-0.4
0x3F	-0.9
0x1F	-1.5
0x1B	-2.7
0x17	-4.0
0x13	-5.7
0x0F	-7.9
0x0B	-10.8
0x07	-15.4
0x06	-18.6
0x03	-25.2

Any help would be greatly appreciated.

over 12 years ago

0 Sverre over 12 years ago

TI__Mastermind 39860 points

The output power is configured through register TXCTRLL and the register values and corresponding output power listed above are correct for CC2480 (and CC2430).

0 Raffaele Iacobelli over 12 years ago in reply to Sverre

Prodigy 185 points

Thanks for the reply, Sverre. However, I'm still not clear on which is the default output power of the CC2480.

The reason I need to know this is because I need to use SYS_RF_TEST in unmodulated carrier mode for a compliance test and I need the to set the output power of the unit in Unmodulated Carrier RF Test Mode to match the output power of a unit running normally not in this test mode.

I have no means of measuring this. The output power is never changed when the unit is not in RF test mode. It's left at the default setting which I cannot find mention of anywhere. I assume this is a setting in the Z-stack running internally on the CC280. Do you know what it is?

0 Sverre over 12 years ago in reply to Raffaele Iacobelli

TI__Mastermind 39860 points

Sorry for not answering correctly the first time. The default output power is 0 dBm (0x7F)

0 Derek over 12 years ago in reply to Raffaele Iacobelli

Mastermind 9812 points

Please keep in mind that the CC2480 has numerous issues, is not recommended for new designs, and has been replaced with the CC2530ZNP.

0 Raffaele Iacobelli over 12 years ago in reply to Sverre

Prodigy 185 points

Thanks for clarifying that for me, Sverre.

As you mentioned, Derek. We encountered a few issues with the CC2480 during development. The CC2530 is definitely being considered for our next revision.

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CC2480 default Tx power