Hi Support Team,
My customer needs to know the following questions related the below thread.
Could you please reply them?
Q1. if RTCLK is not used, does the controller use the internal clock when sending commands
or does it use the signal from the external pin of QSPI_CLK when sending commands?
Q2. When RTCLK is not used, you said that the controller uses the internal clock for sampling the received data,
but we assume that the output from SPI_CLKGEN inside the QSPI module is used for that.
Am I correct in my understanding that the stepped waveform* that
I am checking outside the chip could be transmitted inside the chip due to reflections?
Or are you saying that it does not matter because it is not directly connected to the level shifter
since it is sandwiched between the level shifters?
*If you need the waveform data, I will send it to you by private message.
Q3. If the answer to Q2. is that there is a possibility of transmission even inside the chip due to reflection,
is it best to review the wiring length? Or should I absorb it with damping resistors or the like?
Q4: When RTCLK is not used, you said that the internal clock is used,
and data can be set to be delayed with respect to the clock in a register.
Is the delay time for this data based on the pad output?
Best regards,
Kanae
