AM5728: AM5728 QSPI data transmission is not continuous.

DaeWon Lim

Part Number: AM5728

I have observed that the process of downloading files in the configured environment, which involves AM5728 and a flash memory (S25FL256S), is much slower than the configured speed. When measured with a scope, I have confirmed the presence of continuous blank periods during data transmission.

It seems that there are limitations to improving the speed by modifying only the SPI_defaultParams provided in the PDK code for the S25FL. If there are additional options or settings that need to be configured, I would appreciate it if you could provide that information.

over 1 year ago

0 Parth Nagpal over 1 year ago

TI__Mastermind 42135 points

Hi,

Can you please share more details?

Can you please mention what are your current configuration and what difference you see in terms of speed?

DaeWon Lim said:
When measured with a scope, I have confirmed the presence of continuous blank periods during data transmission.

Also, can you please share more details on these blank periods in data transmission.

Regards,
Parth

0 DaeWon Lim over 1 year ago in reply to Parth Nagpal

Prodigy 80 points

I cannot provide measurement data through the scope at the moment. I will attempt to show you a graphical representation of the data as best as I can recall.
The code is designed to perform burst transfers in the size of the Flash Memory's block size. However, contrary to expectations, there is a delay of approximately ten times the data transmission time between consecutive data points.

0 Parth Nagpal over 1 year ago in reply to DaeWon Lim

TI__Mastermind 42135 points

Hi,

I'll have to check this internally, will get back on this in a day or two.

Regards,
Parth

0 Karthikeyan S 24 days ago in reply to Parth Nagpal

TI__Expert 7190 points

Hi,

Which boot flow do you have in use here? Additionally, which driver example is being used.

Regards,

Karthik

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AM5728: AM5728 QSPI data transmission is not continuous.