About PUN CHEE HUEY

PUN CHEE HUEY · 2024-09-03

Hi All,I have a 50MHz clock with 1Vpp and the MAC is not working. The only information I have from the RM and datasheet is this is a digital input pin and never mentioned about the voltage level. Please help what is the clock pulse VPP for RMII refer...

PUN CHEE HUEY · 2023-07-11

Hi All,I have a custom board with STM32735VGT(this mcu is with 1=quad SPI but using the register octpspi). I am using the micro mt25qL128 NOR flash.I am using the 1-1-1(1 bit instruction, 1 but data) for read and configure the registers, eraseI am us...

PUN CHEE HUEY · 2024-09-04

after put in the clock source with 2.5Vpp, then STM32H735 MAC is workable now. The phy ADIN1100(analog device) is also ok but with clock source 1Vpp.

PUN CHEE HUEY · 2024-09-03

The clock is 1Vpp because ADIN1100 needs 1Vpp for best performance. But I can use the clock source, which is 2.5Vpp to input the STM32 MCU RMII clock reference pin. some rework need to do check.

PUN CHEE HUEY · 2023-07-13

How to re-open the discussion as the solution is still not known ?

PUN CHEE HUEY · 2023-07-13

I am using external power supply to provide 3.3v (it was 3.5 or more) to the custom board . will it damage the flash ?

PUN CHEE HUEY · 2023-07-12

I have fixed it. I have second board, after erase, program, read verfiy for 50 times. Then the problem occur. I only use the last sector of the flash.

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STM32H735 RMII_REF_CLK 50MHz

Problem of program using qspi mt25qL128 with octospi STM32H735VGT

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Re: STM32H735 RMII_REF_CLK 50MHz

Re: Problem of program using qspi mt25qL128 with octospi STM32H735VGT

Re: Problem of program using qspi mt25qL128 with octospi STM32H735VGT

Re: Problem of program using qspi mt25qL128 with octospi STM32735VGT