Doutb regarding Daisy chaining BMSCCTX with BMSCCTX

[Amal_V]

Hi team,
I have seen example of C4MINI1 daisy chaining BMSCCTX with BMSCC which is working fine.
I have 2 BMSCCTX, so i was wondering that i can connect 2 BMSCCTX for daisy chaining with C4MINI1.

But i have noticed that in the datasheet of CCTX, the daisy chain receiving pins are not mounted inside,(which is mounted for BMSCC only. So does it mean i cant use 2 BMSCCTX as node and use dual access configuration?
Can anyone explain about this please.

Thank You.

[SRomeo · Accepted solution]

Hi Amal,
As you know this is an evaluation board. It does not aim to be a reference design, but it represents a practical example of the usage of ST integrated circuits.
Each evaluation board is built with a specific purpose in mind. (This work may be used by experienced FW engineers/Carmakers to develop new boards fast!)

The purpose of these two boards is the following:

•  AEK-POW-BMSCCTX =  "1st node of a BMS chain"
•  AEK-POW-BMSCC =  "2+ node of a BMS chain"

If you take a look to the BMSCCTX schematic, you surely notice the SPI/ISOSPI connections to L9963E.
BMSCCTX/CC chain does not support Dual Access. (as specified in the BMS component into AutoDevKit)

If you are interested in dual access, please consider other AEK board configurations:
(ISOSPI +N x BMS63EN+ISOSPI)

If you are going to purchase .mln pieces, then we should face in a meeting to define the terms of our collaboration.
Else, stick with our suggested solutions.

Best regards,
Simone
AEK_Team