RFQ/BOM 0 Se connecter / Registre

Sélectionnez votre emplacement

image de l'utilisateur

Why does SPI come up with these four modes?

Technology
septembre 21, 2020 by Lydia 1736

Recently I was studying the SPI protocol. I learned that SPI has 4 modes according to the difference between CPOL and CPHA, but I haven't figured out why these four modes should be developed. Everyone is unified into one of them, isn't it more versatile? Please master answer.

Tous les commentaires

user image

Nolan Posté sur September 21, 2020

Because at that time there were many companies with their own standards.

0
user image

Melanie Posté sur September 21, 2020

For different hardware boards, the pull-up and pull-down of the SPI interface may be inconsistent. In this case, the SPI mode configuration is required. However, most of the current usage patterns are just one of them. The reason is that a hundred schools of thought were contending at that time, and their design standards were different.

0
user image

Brody Posté sur September 21, 2020

Patent issues, such as STM32's I2C, many people have reported that there are problems, and it is designed to avoid problems with patent results.

0

Écrivez une réponse

Vous devez vous connecter pour répondre. Se connecter | Registre