J
joble
- Jan 1, 1970
- 0
I'm using an ST72264 to drive 44 SPI switches (ST: L9822E).
Communicating with those devices works fine, but i'm looking for
practical information about SPI.
ST only has an app note for communication with one single EEPROM. Also
other manufacturers i've looked at do not have this information.
I'm planning to not to daisy chain all 44 of them, but make 4 chains
with 11 SPI-devices. The MCU sends 4 independent enable signals, one
for each chain. I do this to prevent all 44 devices to stop working
when one fails.
How long can an SPI connection be? Can i bring the SPI to another PCB
without trouble?
Can anybody help me find an appnote or give advice.
Greets!!!
Communicating with those devices works fine, but i'm looking for
practical information about SPI.
ST only has an app note for communication with one single EEPROM. Also
other manufacturers i've looked at do not have this information.
I'm planning to not to daisy chain all 44 of them, but make 4 chains
with 11 SPI-devices. The MCU sends 4 independent enable signals, one
for each chain. I do this to prevent all 44 devices to stop working
when one fails.
How long can an SPI connection be? Can i bring the SPI to another PCB
without trouble?
Can anybody help me find an appnote or give advice.
Greets!!!