Daisy Chaining the ADC

Question

Hello,

I am using 2 LTC1859 ADCs on one of my design. Is it possible to daisy chain these 2 ADC? I want to reduce the number of GPIO pins on my microcontroller.
I noticed that LTC1859 does not have a chip select pin (CS) and was wondering if RD pin can be used as a chip select?

Thanks!

NathanT · Accepted Answer

Hi, Naayan . 
 
 Both nRD and nCS are used to frame the output data on the SPI bus. They may have a different naming convention, functionality wise, they are the same. Thus, you can configure the device to a daisy chain. 
 
 Here is a reference for a daisy chain configuration: Introduction to SPI Interface | Analog Devices 
 
 Best regards, Jo)

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Daisy Chaining the ADC