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How to read 18-Bit SPI with MPC5744P ?

Question asked by Pat on Nov 30, 2015
Latest reply on Dec 1, 2015 by Pat

Hi all,

 

I have 4x AD7608 from Analog Devices connected on the same SPI bus. The AD7608 is a simultaneous 8-channel with 18-Bit simultaneous sampling ADC.

The MPC5744P has the frame Size (FMSZ) limited to 16-Bit in Master mode.

Therefore the only way to achieve the read of 18-bit data is to emulate the SPI by DMA ?

 

Best regards,

Pat

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