https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/<p style="display:none;">blank</p>en-USTelligent Community 13https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1661815/cc2591-2-2-ghz-peak-observed-in-emi-testingTue, 07 Jul 2026 07:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a0b0e1c0-c3d1-4418-b8c9-0b87ee8518fcAkhil AithalPart Number: CC2591 Other Parts Discussed in Thread: CC2520 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, AkhilCC2520CC2591Test &amp; Measurementhttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1661168/cc2340r5-openocd-and-cc2340r5-launchpad/6405539Mon, 06 Jul 2026 12:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0cd47fe3-004e-4e5a-9170-a647fccf69d3Andy RutterThank 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&#39;t have the latest board files.https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659455/trf7970a-rx-pin-voltage-level-issue/6405317Mon, 06 Jul 2026 08:59:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:00cf6453-9d5b-42fa-8c1e-568feb682fa6user5883945customer tested the EVM board and encountered the same issue.https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1661168/cc2340r5-openocd-and-cc2340r5-launchpad/6405280Mon, 06 Jul 2026 08:33:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:546798c7-bc2f-4143-bc8d-a94c258d9504LeaHi 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, Leahttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1661168/cc2340r5-openocd-and-cc2340r5-launchpadFri, 03 Jul 2026 21:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a4f2dbba-9ad5-4b11-be76-134c52d86c9fAndy RutterPart Number: CC2340R5 Which openocd board .cfg file should I use for the cc2340r5 launchpad development board? -- AndyPortable ElectronicsCC2340R5https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659455/trf7970a-rx-pin-voltage-level-issue/6404362Fri, 03 Jul 2026 09:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0774d062-35eb-410c-8221-d1b7c4a84218user5883945Hello, Is there any update?https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659455/trf7970a-rx-pin-voltage-level-issue/6401296Wed, 01 Jul 2026 12:32:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4b5f0643-d117-448e-b6e4-7d153698c696user5883945Dear, Today I went to the customer&#39;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.https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659945/cc2662rq1-bcu-evm-available-to-purchase/6400346Tue, 30 Jun 2026 19:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c4da49a9-2b5f-4a76-8ce7-be101101b08bEvan WHi Caitlyn, Yes, it&#39;s available for purchase but does require an NDA with TI. You can request approval to purchase here. CC2662RQ1-BCU-EVM Evaluation board | TI.comhttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659945/cc2662rq1-bcu-evm-available-to-purchaseTue, 30 Jun 2026 19:38:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2089a6ff-f6ab-4716-9e70-2a89825331bcCaitlyn CavanaghPart Number: CC2662RQ1-BCU-EVM Hello, is the CC2662RQ1-BCU-EVM available to purchase? If not, can you recommend a similar product that is available?CC2662RQ1-BCU-EVMhttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1650265/cc8530-cc8530-cc2592-range-issue/6399908Tue, 30 Jun 2026 14:51:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:09dba8eb-1358-409b-bf25-b6dc8849dd5eRyan Brown1It 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, Ryanhttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1650265/cc8530-cc8530-cc2592-range-issue/6399488Tue, 30 Jun 2026 08:57:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:13c0b2de-0d8b-4609-8c05-9956f5f34d6dSrilakshmi HHi 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, Srilakshmihttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659455/trf7970a-rx-pin-voltage-level-issue/6399760Tue, 30 Jun 2026 07:52:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:79540e97-63ec-4fdb-b0da-96b7177a34abuser5883945Part 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.Industrial AutomationTRF7970Ahttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659455/trf7970a-rx-pin-voltage-level-issue/6399407Tue, 30 Jun 2026 07:39:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4ea2e9c7-f266-4433-a003-54f8d78b00bauser5883945Dear, 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?https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659455/trf7970a-rx-pin-voltage-level-issueMon, 29 Jun 2026 14:10:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:eb6baf86-229b-4bb8-a889-285ab8737d50user5883945Part 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?Industrial AutomationTRF7970Ahttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659004/cc8520-input-voltage-clarification/6396716Fri, 26 Jun 2026 14:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:570c1dba-47ce-4f6f-bee8-40278108753aLeaHi ! This sounds like a duplicate of CC8520: 1.8V logic compatibility? You can contribute to the other thread if you wish. Kind regards, Leahttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1659004/cc8520-input-voltage-clarificationFri, 26 Jun 2026 14:11:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:69967ddd-e935-4f3d-8ca4-881190556d98Alex SeglerPart 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!cc8520Applianceshttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1650265/cc8530-cc8530-cc2592-range-issue/6396665Fri, 26 Jun 2026 13:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:1be0df6a-fb30-42bc-acd6-648d31dcefa5Ryan Brown1After loading the production test image, are you following the Production Test instructions to run the test? Have you ensured that you&#39;ve correctly connected the radio output to the Spectrum Analyzer and that this tool is tuned to the correct frequency? Regards, Ryanhttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1650265/cc8530-cc8530-cc2592-range-issue/6396003Fri, 26 Jun 2026 02:36:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:62df50b9-a8e2-4b61-b651-0199a6bfd425Srilakshmi HHi 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.https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1650265/cc8530-cc8530-cc2592-range-issue/6390298Mon, 22 Jun 2026 12:11:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b0e242b1-2c5a-4c98-bfff-8e51f5e95b11Ryan Brown1Hello 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, Ryanhttps://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1650265/cc8530-cc8530-cc2592-range-issue/6390266Mon, 22 Jun 2026 11:33:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:44978578-f8e3-4881-ab3d-8047973f47adVinay K LHi Ryan, Kindly please let me know, which production test image we have to flash in our Master and Slave Boards. Because we have used &quot;prod_test_regcompl.ppwptc&quot; and &quot;prod_test_simplerf_auto.ppwptc&quot; 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