Other wireless technologies forum - Recent Threads

CC2591: 2.2 Ghz peak observed in EMI testing

Akhil Aithal — Tue, 07 Jul 2026 07:56:33 GMT

Part Number: CC2591

Hello,

we are using a CC2520 zigbee transmitter in combination with a CC2591 range extender for our product. While carrying out the EMI testing, we find that there exists a 2.2GHz peak along with our intended 2.4GHz signal. The magnitude of the signal is comparable to the 2.4GHz signal. We are using a test software to transmit every 10-100ms and we are able to set the channel and transmit power. What we observe is that the channel and transmit power of our target signal at 2.4GHz is behaving as per our setting, but the unintended signal at 2.2GHz remains unchanged in its frequency as well as power for any setting.
I am looking to find the root cause and potential solutions for this. It would be very helpful if you could support.

Thank you.

Regards,

Akhil

RE: CC2340R5: openocd and cc2340r5 launchpad

Andy Rutter — Mon, 06 Jul 2026 12:46:40 GMT

Thank you. I was trying to use the download from https://software-dl.ti.com/ccs/esd/vscode/ti-embedded-debug/ti-openocd.html but that doesn't have the latest board files.

CC2340R5: openocd and cc2340r5 launchpad

Andy Rutter — Fri, 03 Jul 2026 21:56:40 GMT

Part Number: CC2340R5

Which openocd board .cfg file should I use for the cc2340r5 launchpad development board?

-- Andy

TRF7970A: RX pin voltage level issue

user5883945 — Mon, 29 Jun 2026 14:10:12 GMT

Part Number: TRF7970A

Dears,

The datasheet describes that in direct mode 0, when the RX pin does not emit waves, it is at a low level. However, when I tested that it does not emit waves, the RX pin is at a high level. Is there any difference between the two?

RE: TRF7970A: RX pin voltage level issue

user5883945 — Mon, 06 Jul 2026 08:59:23 GMT

customer tested the EVM board and encountered the same issue.

RE: CC2340R5: openocd and cc2340r5 launchpad

Lea — Mon, 06 Jul 2026 08:33:34 GMT

Hi Andy !

For the CC2340R5, you should use the https://github.com/TexasInstruments/ti-openocd/blob/ti-release/tcl/board/ti_lp_em_cc2340r5.cfg file. This file is only usable in the ti-openocd repository, not the official upstream openocd repository.

Kind regards,
Lea

RE: TRF7970A: RX pin voltage level issue

user5883945 — Fri, 03 Jul 2026 09:23:33 GMT

Hello,

Is there any update?

RE: TRF7970A: RX pin voltage level issue

user5883945 — Wed, 01 Jul 2026 12:32:36 GMT

Dear,

Today I went to the customer's laboratory to investigate the problem on-site.
At the moment of static electricity, there will be a spike with a short interval when measuring the waveform of the I/O6 pin. Afterwards, delay by about 10us and output a low pulse of about 20us. The following adjustments have been made:
1. The bypass capacitor of power VIN (pin2) has increased from 2.2uF to 47uF;
2. I/O6 has added an RC low-pass filtering circuit;
The above adjustments have not improved.
Based on this, it is suspected that after the low pulse was generated, the MCU judged it as the starting signal of RX, which remained at a high level thereafter. The signals collected by the MCU were all FFF garbled information.
Is this low pulse of around 20us actively emitted from within the IC and how can it be eliminated? Customers can receive spikes caused by electrostatic coupling, but cannot receive garbled codes.

CC2662RQ1-BCU-EVM: Available to Purchase

Caitlyn Cavanagh — Tue, 30 Jun 2026 19:38:25 GMT

Part Number: CC2662RQ1-BCU-EVM

Hello, is the CC2662RQ1-BCU-EVM available to purchase? If not, can you recommend a similar product that is available?

RE: CC2662RQ1-BCU-EVM: Available to Purchase

Evan W — Tue, 30 Jun 2026 19:56:55 GMT

Hi Caitlyn,

Yes, it's available for purchase but does require an NDA with TI. You can request approval to purchase here. CC2662RQ1-BCU-EVM Evaluation board | TI.com

CC8530: CC8530+CC2592 Range issue

Srilakshmi H — Thu, 28 May 2026 11:28:15 GMT

Part Number: CC8530

Hi Team,

The current implementation using CC8530 with CC2592 is exhibiting a communication range limitation of approximately 40 m under near line‑of‑sight conditions, which is significantly lower than the expected performance based on the device capabilities,

Please guide how the Range can be improved ?

Regards,
Srilakshmi H

RE: CC8530: CC8530+CC2592 Range issue

Ryan Brown1 — Tue, 30 Jun 2026 14:51:26 GMT

It appears that the tests believe to have passed. Either the RF front end is not set up properly to transmit, the spectrum analyzer is not tuned to the correct frequency, or the TX at each channel is too short to be observed with current spectrum analyzer settings. Does your RX test RSSI noise floor change when running the TX test specifically? Note that you will have to align with a channels frequency being used in the TX test.

Regards,
Ryan

RE: CC8530: CC8530+CC2592 Range issue

Srilakshmi H — Tue, 30 Jun 2026 08:57:17 GMT

Hi Ryan,
Please find the Observation in the below document,
e2e.ti.com/.../RF_5F00_CC8530_5F00_CC2592_5F00_Range_5F00_issue_5F00_30062026.docx

Regards,
Srilakshmi

TRF7970A: ESD testing interference issue

user5883945 — Tue, 30 Jun 2026 07:52:20 GMT

Part Number: TRF7970A

Dear,

During the ESD test, the MISO output level instantly pull down, and normal communication was restored afterwards.
Testing method:
The ESD grab did not make any contact with the product casing, only discharged to the ground on the nearby testing platform.

After replacing the passive crystal oscillator with an active crystal oscillator, the waveform of the crystal oscillator became much more stable, but the MISO was still pulled down.

RE: TRF7970A: RX pin voltage level issue

user5883945 — Tue, 30 Jun 2026 07:39:15 GMT

Dear,

In DM0 mode, when RX is idle with no data, I/O6 outputs a high level. And Figure 6-32 in the datasheet shows a low level. Is this reasonable?

RE: CC8520: Input Voltage Clarification

Lea — Fri, 26 Jun 2026 14:23:25 GMT

Hi !

This sounds like a duplicate of CC8520: 1.8V logic compatibility?
You can contribute to the other thread if you wish.

Kind regards,
Lea

CC8520: Input Voltage Clarification

Alex Segler — Fri, 26 Jun 2026 14:11:58 GMT

Part Number: CC8520

Hello team - can you tell me if there is a configuration of CC8520 within your recommendations that is compatible with 1.8V logic? We are trying to avoid a level shifter and the datasheet does not provide logic voltage thresholds. Assuming V(high)=0.7Vcc, I think it would be valid to run CC8520 at Vcc=2.0V and that should allow it to be compatible with logic levels.

Thanks!

RE: CC8530: CC8530+CC2592 Range issue

Ryan Brown1 — Fri, 26 Jun 2026 13:34:37 GMT

After loading the production test image, are you following the Production Test instructions to run the test? Have you ensured that you've correctly connected the radio output to the Spectrum Analyzer and that this tool is tuned to the correct frequency?

Regards,
Ryan

RE: CC8530: CC8530+CC2592 Range issue

Srilakshmi H — Fri, 26 Jun 2026 02:36:46 GMT

Hi Ryan,

We have reviewed the E2E forum guidance and programmed the device with the TX-only production test configuration (prod_test_simplerf_tx.ppwptc).
According to the documentation, this test does not require a TESTER and the result can be verified using either a spectrum analyzer or the RXTX panel. However, after flashing the configuration, we are unable to observe any RF transmission or measure the transmit power on the spectrum analyzer.
We would appreciate your guidance on further debug steps.

RE: CC8530: CC8530+CC2592 Range issue

Ryan Brown1 — Mon, 22 Jun 2026 12:11:14 GMT

Hello Vinay,

Here are two E2E threads with instructions on this topic:

CC8530: Using PurePath Wireless Commander Error occurred. Please solve the problem.
CC8520: CC8520 + CC2590 wireless outdoor distance issue

Regards,
Ryan

RE: CC8530: CC8530+CC2592 Range issue

Vinay K L — Mon, 22 Jun 2026 11:33:40 GMT

Hi Ryan,

Kindly please let me know, which production test image we have to flash in our Master and Slave Boards. Because we have used "prod_test_regcompl.ppwptc" and "prod_test_simplerf_auto.ppwptc" images to verify this graph. But there was no output observed in RX/TX Graph or neither in Spectrum Analyzer.

Please verify which image should be used for the product test.
And how we can test TX and RX using 2 PPW CMD sessions.

Thanks and regards,

Vinay

RE: CC8530: CC8530+CC2592 Range issue

Ryan Brown1 — Thu, 18 Jun 2026 15:36:10 GMT

Apologies for the confusion in my previous response which was a typo, you are correct that the RSSI plot will not be populated when using the TX test. Only RX tests produce RSSI values. Is this the case in your observations?

I would recommend two PPW CMD sessions, one for the RX board and another for the TX, but it is unexpected that the RSSI plot would not be populating under the active RX test. You could use an antenna connected to a spectrum analyze to confirm whether the TX test is actively transmitting at the expected frequency.

Regards,
Ryan

RE: LP-EM-CC2745R10-Q1: Release-to-Market Date

Evan W — Thu, 18 Jun 2026 14:51:44 GMT

Hi,

The board is available in the PDC now, and can be ordered via ZS order internally by the sales team. It will be live on ti.com in a little under a month.

LP-EM-CC2745R10-Q1: Release-to-Market Date

TI-CSC — Wed, 17 Jun 2026 11:58:46 GMT

Part Number: LP-EM-CC2745R10-Q1

Hello E2E Experts,

When will the multiple antenna booster pack (as shown in the video), be released to mass-market?

www.ti.com/.../6366746223112

Regards,

TICSC

RE: CC8530: CC8530+CC2592 Range issue

Srilakshmi H — Thu, 18 Jun 2026 12:28:29 GMT

Are you actively running an TX test and yet do not see any RSSI plot? - Yes when we run transmit we are not seeing anything in the RSSI plot

For the TX test I would not expect the plot to be populated.

Have you tried running RX on one board and TX on another board, both through a PPW CMD session? - Can you please guide how to use the PPW CMD session to run RX on one board and transmit on another since we are not getting RSSI plot.