Attached is the SPI example in chained DMA mode for ADSP-21489. Below is the connection details.
SPI_CLK(DPI_PB01) -------- SPIB_CLK(DPI_PB04)
SPI_MOSI(DPI_PB02) -------- SPIB_MOSI(DPI_PB05)
SPI_FLG0(DPI_PB03) -------- SPIB_DS(DPI_PB06)