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See the datasheet linked to on the [[Hardware]] page for reference. From that datasheet, for the structure of the I2C register address u8: "Bit 0 is not used, bits 2:1 select the channel, bits 6:3 select one of the UART internal registers. Bit 7 is not used with the I2C-bus interface, but it is used by the SPI interface to indicate a read or a write operation."

See the [http://www.alldatasheet.net/datasheet-pdf/pdf/347838/NXP/SC16IS750IBS.html datasheet] linked to on the [[Hardware]] page for reference. From that datasheet, for the structure of the I2C register address u8: "Bit 0 is not used, bits 2:1 select the channel, bits 6:3 select one of the UART internal registers. Bit 7 is not used with the I2C-bus interface, but it is used by the SPI interface to indicate a read or a write operation."

== Device 15 ==

== Device 15 ==