Hello,
I'm working on a custom Battery Management System using ADBMS1818 chips.
My architecture is:
-
MCU communicates with the master ADBMS1818 via 4-wire SPI (SCK, CSB, MOSI, MISO).
-
The master ADBMS1818 communicates via isoSPI to a slave ADBMS1818 through transformers (IMB/IPB → transformer → IMA/IPA of the slave).
-
The slave send back its IMB/IPB through transformer back to another slave IMA/IPA etc...
- The last slave IMB/IPB is terminated by a 120Ohm resistor
My question is:
Can I use this architecture ?
Or is it mandatory to use an LTC6820 isoSPI transceiver between the MCU and the master ADBMS1818 to fully enable isoSPI daisy chain communication and response handling?
I would prefer not to use the LTC6820 if it's not required, but I understand there may be architectural limitations.
Thanks for your guidance!
