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how to connect bf/SHARC's SPI to a 3-wire SPI

Question asked by HenryL Employee on Aug 27, 2015
Latest reply on Aug 27, 2015 by SachinV


we all know that both BF and SHARC's SPI is 4-wire SPI interface, which includes MISO/MOSI/SCLK/SS. but some device like AD9268's SPI is 3-wire SPI, which includes SDIO/SCLK/CSB. (Here the SDIO can support input/output in TDM mode with a single wire)

so we meet the problem of how to connect the 4-wire SPI master with a 3-wire SPI slave.

Someone suggest if we can combine MISO and MOSI together, then connect to SDIO, does it work?