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A.Caliskan
Associate III
January 30, 2022
Question

SPI Tsize-Tser

  • January 30, 2022
  • 1 reply
  • 1815 views

Hello , ı read RM0433 ,

I could not understand the process in the image below(page 21980693W00000JNrN5QAL.png)

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1 reply

TDK
January 30, 2022

23 = 16 +7 = 12 + 8 + 3

The TSER field is of limited use IMO. It's rare not to know how many bytes you're sending at the start the transaction, in which case you just need TSIZE. Even then, endless mode with TSIZE=0 is often suitable.

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A.Caliskan
Associate III
January 30, 2022

that is, Tsiz=0 for continuous data transmission...what I don't understand is why the 6th access is ignored and 23 why couldn't it be tsize=12 tser=11