RF & microwave forum - Recent Threads

AFE7920EVM: Request for technical review regarding potential defect in AFE7920EVM

Minho Choi — Tue, 26 May 2026 03:30:31 GMT

Part Number: AFE7920EVM

Dear Technical Support Team,

I am writing to report an issue with the AFE7920EVM I recently purchased and would like to request a review regarding the possibility of a hardware defect.

We have encountered the following issues during the setup process:

No signal output from the CPLD: We have confirmed that there is no signal coming from the CPLD on the AFE7920EVM board.
SPI communication failure: When attempting to establish SPI communication with the ZCU102 according to the Bring-up Guide, the system returns a communication error.
Verification: To rule out external issues, we tested the same ZCU102 setup with another AFE7920EVM board, and it communicated successfully. This leads us to believe that the issue is specific to the current board.

Could you please advise if there are any additional diagnostic steps I should take, or if this indicates a hardware failure? I look forward to your guidance on how to proceed with a potential replacement or repair.

Best regards,

Minho Choi

ESoC Lab., Hanyang University, Seoul, Korea

RE: AFE7920EVM: Request for technical review regarding potential defect in AFE7920EVM

Mirana Emigh — Mon, 13 Jul 2026 21:01:01 GMT

Hi Minho,

Can you please 1) confirm you received the new EVM board and 2) provide the tracking information for the returned device?

Thanks!

Mirana

AFE7768D: TI204C-IP — Request for JESD204 rapid design IP

JC Lee — Mon, 13 Jul 2026 06:32:10 GMT

Part Number: AFE7768D

Dear sir,

I want the following site, "TI204C-IP" approach, which ends with rejection.

Can you tell me how I can access here?

Best Regard......

jacy Lee

AFE7950EVM: Setting AFE7950 TX channels as a combination of hopping and fixed frequency (FCW and 1 KHZ)

Luna john — Thu, 09 Jul 2026 11:00:12 GMT

Part Number: AFE7950EVM

I am able to successfully configure all four TX channels of the AFE7950 to transmit on four different frequency bands. I am also able to configure all four channels to operate in GPIO-based frequency hopping mode.

My question is whether it is possible to configure the channels independently, such that:

Channel A operates in spot mode (no frequency hopping),

Channel B operates in GPIO-based frequency hopping mode,

Channel C operates in GPIO-based frequency hopping mode, and

Channel D operates in spot mode (no frequency hopping).

Is this configuration supported?

If this mixed per-channel configuration is supported, could you please let me know:

Which registers or Latte configuration parameters control this behavior?
What settings are required to configure some TX channels in spot mode while others operate in GPIO-based frequency hopping mode?

LM27761EVM: STEP files

Ahmet Soydan AKYOL — Tue, 07 Jul 2026 10:52:29 GMT

Part Number: LM27761EVM

DEar Sir

We are purchasing two components (evaluation boards)

we would like to check the suitability with mechanical design

Can you please sendus the step files of the following components (two evaluation boards) if possible. Thank you

LM27761EVM

TPS7A3301EVM-061

RE: LM27761EVM: STEP files

Andreas Mueller — Wed, 08 Jul 2026 13:52:13 GMT

Ahmet,

I will close this thread here and let's continue the conversation in the private chat.

Best regards,

Andreas.

RE: LM27761EVM: STEP files

Ahmet Soydan AKYOL — Wed, 08 Jul 2026 07:37:09 GMT

Hello Andreas

We sent you a private message

we re from indra spain ( asakyol@indra.es ialtungunes@indra.es ) Ahmet Soydan AKYOL and Inanc ALTUNGUNES

step files are better but if not gerber files will be useful too.

Low-Noise, Regulated, Switched-Capacitor Voltage Inverter	Texas Instruments	LM27761EVM
1-A, Ultralow-Noise Negative Voltage Regulator	Texas Instruments	TPS7A3301EVM-061

RE: LM27761EVM: STEP files

Andreas Mueller — Tue, 07 Jul 2026 14:52:06 GMT

Hello Ahmet,

thanks for reaching out in E2E.

Design information is not shared in this public forum.

Step files are not available, but gerber files might exist. In need to check.

Please let me know which company you are working for so that I can check for an existing NDA.

Please also let me know if gerber files would be acceptable.

Best regards,

Andreas.

RE: TMS320LF2407A: Lifecycle of MPNs TMS320LF2407APGEA, TMS320LF2407APGES

Joe Prushing — Mon, 06 Jul 2026 20:02:14 GMT

Hello here is TI's official stance on product lifecycle: Product life cycle | TI.com

While the device is still 'active' and there are no specific plans to EOY, I would highly recommend considering a newer device for a new design. As stated on the product folder we can no longer provide technical support for this device. We have devices with much better performance, software, tools, and cost that will likely meet your needs: Real-time digital power MCUs product selection | TI.com

TMS320LF2407A: Lifecycle of MPNs TMS320LF2407APGEA, TMS320LF2407APGES

Rashi Gupta — Mon, 06 Jul 2026 04:19:37 GMT

Part Number: TMS320LF2407A

Hi,

We are planning to use below MPNs in our products. Before procedding, we want to make sure the lifecycle of the parts.

Appreciate if you can share estimated Years to End-of-life for below parts on priority.

TMS320LF2407APGEA

TMS320LF2407APGES

AFE7900EVM: AFE7900 RX Link Up Failure Despite XCVR and Lane Locks

Maganti Datta — Mon, 06 Jul 2026 06:59:30 GMT

Part Number: AFE7900EVM

I am running the AFE7900 1T/1R design using the FPGA design and Latte scripts provided by TI. The LMK and AFE configuration scripts run successfully, and I am getting XCVR lock, all JESD lane locks, and valid output data.

However, during AFE configuration, I observe the following errors:

Fixed ones error on all lanes
"Couldn't get the link up for device RX: 0; Alarms: 0xf0000000"

I have attached the LMK and AFE configuration scripts along with the error screenshot. Could you please help identify the possible cause of these errors and whether any additional checks are recommended?

config_lmk.txt

config_afe.txt

AFE7900EVM: Re: ZCU102 design for AFE7900 board

Siddharth Bhonge — Fri, 03 Jul 2026 14:11:27 GMT

Part Number: AFE7900EVM

Dear TI Team,

We required ZCU102 design with AFE7900EVM HDL design for testingand , Kindly provide a HDL design it must be IQ data on FPGA. and Versal AI Edge VE2302 SOM design with AFE7900EVM HDL design for testingand , Kindly provide a HDL design it must be IQ data on FPGA.

RE: AFE7900EVM: Investigation into why the noise level changes when the input level is changed from -24.9 dBm to -25.0 dBm

Suematsu Tatsuya — Thu, 02 Jul 2026 08:14:40 GMT

# Directly overwrite the RXB (Channel 1) DSA to 2 dB

AFE.DSA.setRxDsa(1, 2)

AFE7900EVM: Investigation into why the noise level changes when the input level is changed from -24.9 dBm to -25.0 dBm

Suematsu Tatsuya — Thu, 25 Jun 2026 07:18:40 GMT

Part Number: AFE7900EVM

When using the AFE7900EVM and LATTE GUI, a phenomenon occurs where the noise level changes at the threshold between input levels of -24.9dBm and -25.0dBm, with a sampling rate of 2560MHz and input frequency of 1920MHz on the FADC.

I'm using RXB.

I've only changed the settings for RX Center Frequency to 1920 MHz and FADC to 2560 MHz.

I’d like to understand the reason and whether there’s any way to deal with it. For now, I’d appreciate it if you could give me a first report by 6/30. Thanks!

RE: AFE7900EVM: Investigation into why the noise level changes when the input level is changed from -24.9 dBm to -25.0 dBm

Suematsu Tatsuya — Thu, 02 Jul 2026 08:12:14 GMT

When the DSA is set to 15 dB, the noise floor fluctuation—observed when switching between -24.9 dBm and -25.0 dBm—is reduced to 10 dB.
Setting it to 20 dB further reduces the noise floor fluctuation.

RE: AFE7900EVM: Investigation into why the noise level changes when the input level is changed from -24.9 dBm to -25.0 dBm

Suematsu Tatsuya — Thu, 02 Jul 2026 08:08:21 GMT

Reading addresses likely related to DGC status/gain

print(AFE.RXDIG[1].DGC.readReg(0x00))
print(AFE.RXDIG[1].DGC.readReg(0x04))
print(AFE.RXDIG[1].DGC.readReg(0x08))

Reading From 0x0000 value 0x30
48
Reading From 0x0004 value 0x78
120
Reading From 0x0008 value 0x04
4

With NCO1920M, BW100MHz, and DDC20, there is no change in the register value between the -24.9 dBm and -25.0 dBm cases.

RE: AFE7900EVM: Investigation into why the noise level changes when the input level is changed from -24.9 dBm to -25.0 dBm

Suematsu Tatsuya — Thu, 02 Jul 2026 04:17:22 GMT

Please tell me the command to check the DGC status (such as the exponent).
I am using:
TI-AFE79XX Evaluation Tool
Tool Version 2.9.0
Lattte Frameworks Version 5.7.3

RE: AFE7900EVM: Investigation into why the noise level changes when the input level is changed from -24.9 dBm to -25.0 dBm

Suematsu Tatsuya — Thu, 02 Jul 2026 04:16:32 GMT

DGCの状態(指数部など)を確認するコマンドを教えて
ください
TI-AFE79XX Evalution Tool
Tool Version 2.9.0
Lattte Frameworks Version 5.7.3
を使用しています

RE: AFE7900EVM: Investigation into why the noise level changes when the input level is changed from -24.9 dBm to -25.0 dBm

Suematsu Tatsuya — Thu, 02 Jul 2026 04:13:33 GMT

The command controlling the ALC returns a value of 0.
print(sysParams.agcParams[1].alcEn)

ALC was disabled.

RE: AFE7900EVM: I can't capture data at 30MHz, 1100MHz, or 2200MHz on the AFE7900EVM.

Suematsu Tatsuya — Thu, 02 Jul 2026 02:01:59 GMT

Regarding NCO settings of 1100 MHz and 2200 MHz,
changing the RX/TX channel bandwidth from 100 MHz to 200 MHz allowed for data capture via FFT.

AFE7900EVM: I can't capture data at 30MHz, 1100MHz, or 2200MHz on the AFE7900EVM.

Suematsu Tatsuya — Wed, 24 Jun 2026 06:11:01 GMT

Part Number: AFE7900EVM

When using the AFE7900EVM and LATTE GUI to set the FADC sampling rate to 2560MHz,
setting the following frequencies to the RX Center Frequency (NCO)
causes setting errors and prevents data capture.
I'm using RXB.

1)There's a setup error at 30MHz. Check the 30MHz error log below.
2)You can set the RX Center Frequency (NCO) at 1100MHz,
but you can't capture data. Refer to the 1100MHz log below.
3)You can set the RX Center Frequency (NCO) at 2200MHz,
but you can't capture data. Refer to the 1100MHz log below.

Only the RX Center Frequency and FADC settings are changed.

I would like to ask for guidance on countermeasures.
I would appreciate it if you could send me your initial report by June 26. Thank you.

<30MHz error Log>
###################################################################
Selected IBW coverage crosses the allowed min/max frequency of RXA
Selected IBW coverage crosses the allowed min/max frequency of RXB
Selected IBW coverage crosses the allowed min/max frequency of RXC
Selected IBW coverage crosses the allowed min/max frequency of RXD
Selected IBW coverage crosses the allowed min/max frequency of FBAB
Selected IBW coverage crosses the allowed min/max frequency of FBCD
Frequency band out of RangeCould not find attribute afeInitConfigCheck in configGeniGuiClass
Selected configuration parameters are invalid!
Could not find attribute afeInitConfigCheck in configGeniGuiClass
###################################################################

<1100MHz Log>
process.fftImdParams - Error in computing fftImdParams block. Check if all values are correct.Error. Cannot run engine engine. Check traceback printed below for the error.Traceback (most recent call last): File "core\mEngine.py", line 105, in compute File "lib\engines\HSCEngines.py",

line 145, in function File "lib\engines\HSCEngines.py", line 56, in function File "core\mProcess.py", line 228, in __getattr__ File "core\mDataTypes.py", line 644, in value File "core\mPlot.py", line 56, in compute File "core\mDataTypes.py", line 617, in value File "core\mDataTypes.py", line 644, in value File "core\mProcess.py", line 171, in compute File "lib\processes\HSCProcesses.py", line 1274, in function TypeError: 'float' object has no attribute '__getitem__'

<2200MHz Log>

process.fftImdParams - Error in computing fftImdParams block. Check if all values are correct.Error. Cannot run engine engine. Check traceback printed below for the error.Traceback (most recent call last): File "core\mEngine.py", line 105, in compute File "lib\engines\HSCEngines.py", line 145, in function File "lib\engines\HSCEngines.py", line 56, in function File "core\mProcess.py", line 228, in __getattr__ File "core\mDataTypes.py", line 644, in value File "core\mPlot.py", line 56, in compute File "core\mDataTypes.py", line 617, in value File "core\mDataTypes.py", line 644, in value File "core\mProcess.py", line 171, in compute File "lib\processes\HSCProcesses.py", line 1274, in function TypeError: 'float' object has no attribute '__getitem__'

AFE7900EVM: When using the AFE7900EVM and LATTE GUI with the FADC sampling rate at 2560 MHz, the FFT results get messed up for an input frequency of 1300 MHz and input leve

Suematsu Tatsuya — Wed, 24 Jun 2026 07:45:02 GMT

Part Number: AFE7900EVM

When using the AFE7900EVM and LATTE GUI with the FADC sampling rate at 2560MHz,
the FFT results clearly get messed up at an input frequency of 1300MHz and an input level of 0dBm compared to an input frequency of 1100MHz and an input level of 0dBm.
I'm using RXB.

1)For an input frequency of 1300MHz, set RX Center Frequency (NCO) to 1300MHz.
Refer to the settings & log for the input frequency 1300MHz below.
2)For an input frequency of 1100MHz, the RX Center Frequency (NCO) is set to 1120MHz.

Please refer to the settings & log below for the input frequency of 1100MHz.

Only the RX Center Frequency and FADC settings are changed.

I would like to ask for guidance on countermeasures. I would appreciate it if you could send me your initial report by June 26. Thank you.

RE: AFE7900EVM: When using the AFE7900EVM and LATTE GUI with the FADC sampling rate at 2560 MHz, the FFT results get messed up for an input frequency of 1300 MHz and input leve

Suematsu Tatsuya — Wed, 01 Jul 2026 08:12:39 GMT

It appears that an input level of 0 dBm causes saturation, resulting in distortion of the FFT waveform.
The waveform distortion disappeared when the input was set to -10 dBm.

I would appreciate it if you could point out any misunderstandings on my part.

RE: AFE7900EVM: Investigation into why the noise level changes when the input level is changed from -24.9 dBm to -25.0 dBm

Suematsu Tatsuya — Wed, 01 Jul 2026 06:09:32 GMT

AGC was disabled.
Please explain why the noise level changes by more than 
10 dBFS when the input level is adjusted from -25.0 dBm to -24.9 dBm (with AGC off).

AFE7769D: How to get information about runtime API for AFE7769D?

Jaewoo Lee — Wed, 01 Jul 2026 02:20:14 GMT

Part Number: AFE7769D

Hello,

I am new to TI RFIC(AFE7769D) and have a quick question. I understand how to initialize the AFE77xx with the Hex file generated from Latte, but how can I control it dynamically at runtime using APIs? Where can I find the API documentation and download the Driver/Library software?

BR
Jaewoo