SPI protocol and bus configuration of multiple DCPs

The SPI is one of the widely accepted communication interfaces implemented in Intersil's digitally controlled potentiometers (DCP) portfolio. Developed by Motorola, the SPI protocol became a standard de facto, but does not have officially released specification or agreed by any international committee. That gives some flexibility in implementing SPI protocol in the electronic devices but also requires programmable flexibility of the host micro controller. This application note describes SPI bus implementations that use Intersil's DCPs.

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