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Need simple serial interface to ASICs for configuring registers and sending commands to an ASIC
Must allow for backpressureback pressure, so that ASIC can signal that it is done with a command or ready for new data.
Existing Standards not a good fit
SPI: No backpressureback pressure. Requires polling.
I2C: Backpressure Back pressure possible through clock stretching, but complex protocol and implementation.
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