The Binho support portal and product documentation have been updated to replace legacy industry terms with modern terminology.
Regrettably as of yet, there has been very little consensus within the industry as to which terms to adopt for devices on the I2C bus. We're involved in this conversation taking place and plan to update our documentation once the industry has settled on a set new terms.
SDO - Serial Data Out. An output pin on a device where data is sent out to another SPI device.
SDI - Serial Data In. An input pin on a device where data is received from another SPI device.
CS - Chip Select. Activated by the controller to initiate communication with a given peripheral. Often drawn C̅S̅ to indicate active low but not required.
MOSI - Master Out Slave In
MISO - Master In Slave Out
SS - Slave Select
SCK - Serial Clock. The clock for the bus generated by the controller.
While many microcontroller and processor manufacturers lag behind, the SDI/SDO/CS terminology is already widely adopted by several large semiconductor companies and can be found extensively used in the datasheets for their new devices.
Maxim Integrated has already been using the terms Host and Device in their documentation for a while, and regret that we did not make this change to our documentation earlier. Thankfully this means there should be little confusion as a result of this change in our documentation.
The electronics industry in particular has been using an embarrassingly outdated lexicon when it comes to discussing communication bus topology and the various roles and modes of operation of devices on the bus. It's unfortunate that this has gone on this long without acknowledging the need to leave these terms in the past. Thankfully, the industry is already making the shift, and many device manufacturers have already begun to adopt new terminology. Binho is proud to help push for the industry-wide adoption of modern terminology that is inclusive. Let's celebrate the ability to change and improve over time!