Hello,
I will be attempting to have multiple sensors in a 4 wire SPI bus, using GPIOs connected to different sensors CS pins.
In page 52 of datasheet revision 1.2 it states that:
"The CS lines of the non-selected slave devices are held high, causing their SDO lines
to remain in a high-impedance (high-z) state so that they do not interfere with any active devices."
How about the SDI lines? do the SDI lines go to high-z state?
Best Regards,
C.
Hello,
Every single slave device listens to the SDI line when its CS (Chip Select) line is active (low). When the CS line is inactive (high), the slave device ignores the SDI line, but the line itself remains driven by the master. Since the master controls the SDI line, it is always actively driven by the master during communication.
Thanks,
Mustafa