About AStre

AStre · 2025-03-19

Hello,According to data sheet on STuW81300 the ST1.PLL_SEL must be 1 and Nint, Frac must be calculated based on formula on page 25, when VCO frequency if higher than 6GHz. In this case the sub-harmonic at half frequency appears. How could be this sub...

AStre · 2025-03-03

Hello,When the ST1.PLL_SEL is set to 1 for VCO Frequency > 6 GHz, the sub-harmonic at half frequency appears. How could it be eliminated? Thanks,Alex

AStre · 2024-12-09

Hello, It looks like the synthesizer STuW81300 has RF power degradation across frequency (power is +4dBm at 4GHz and -4dBm at 7.5 GHz). We can't reach declared in data sheet +8dBm at RF1_OUT. How we can control RF power for STu81300 e.g. similarly as...

AStre · 2022-09-06

It is not clear from documentation: What is active level for input signals HW_PD(pin 4), PD_RF1 and PD_RF2 (pins 5 and 6) ?Thanks,Alex

AStre · 2020-02-18

Hello,I've faced some problems with setting up and sending data for STM32L496 Serial Audio Interface (I2S) using HAL functions from the PACK. Could you recommend some software examples or a sequence of actions? Thanks,Alex

AStre · 2020-02-26

Everything works fine now. It just takes some time to make it work.Alex

AStre · 2020-02-24

Hello,I can set up SAI's pll, frame, slot parameters successfully. Unfortunately, there is some problem with sending data. When I use the function HAL_SAI_Transmit, I can see that FIFO is fully loaded with data, SAI is enabled using __HAL_SAI_ENABLE(...

AStre · 2020-02-19

I use the PACK 2.3.0. for the micro STM32L496 on the Nucleo-L496ZG board. After SAI1_A initialisation using HAL_SAI_Init(&hsai_BlockA1), I tried to send data usingHAL_SAI_Transmit(&hsai_BlockA1, (u8*)&test_sai, countof(test_sai), HAL_MAX_DELAY). Ever...

AStre · 2019-06-13

I absolutely agree with you: bits DS [3:0] should take care about everything including type of access to the DR register and settings for the FRXTH bit.

AStre · 2019-06-12

Thank you so much, it work properly now!

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STuW81300 Sub-harmonic reduction for frequency higher 6GHz

STuW81300 sub-harmonic.

STuW81300 power control

I have problems using synthesizer STW81200

Does anybody have an software examples that allow to set up and send data for STM32L496 Serial Audio Interface (I2S)?

Re: Does anybody have an software examples that allow to set up and send data for STM32L496 Serial Audio Interface (I2S)?

Re: Does anybody have an software examples that allow to set up and send data for STM32L496 Serial Audio Interface (I2S)?

Re: Does anybody have an software examples that allow to set up and send data for STM32L496 Serial Audio Interface (I2S)?

Re: I have problem to set up 8 data bit Serial Peripheral Interface: when I set data bit size 8, I have 8 proper data bits and 16 clocks in Transmit mode. How could it be fixed?

Re: I have problem to set up 8 data bit Serial Peripheral Interface: when I set data bit size 8, I have 8 proper data bits and 16 clocks in Transmit mode. How could it be fixed?