I am using RM48L950 in my project for to control 20 SPI slave device. From datasheet I understand it support 5 SPI. So I am going to share each SPI MISO,MOSI and CLK lines for 4 slave devices with separate chip select(So total 5*4=20). Refer image for reference(3 only showing in image).
So I need total 20 Chip select for to control 20 Slave devices, in that each SPI data and CLK lines sharing across 4 slave devices.
Kindly let me know is there any issue while connecting 20 SPI slaves like this configuration?
Also let me know the maximum distance it can handle along with throughput?
Is there any other option for to control 20 Slave devices using SPI(Any Switch mechanism)?