TDA4VH-Q1: System does not auto-boot after Power-ON-Reset when >12 MCANs from Main domain mapped to MCU domain

Hi Team,

Posting on behalf of our customer.

Issue Description

The SoC has two domains:

• MCU Domain (originally 2 MCAN controllers)

• Main Domain (16 MCAN controllers)

We are adding MCAN controllers from the Main Domain to the MCU Domain.

Observed Behavior

• With up to 12 MCAN controllers from Main domain moved to MCU Domain(Totally now 2 Mcu domain controllers + 12 Main domain controllers):

  • Flash via TFTP succeeds

  • After power-off / power-on reset, UART shows auto-boot logs (as expected)

  • System boots normally and CAN communication works

• When any additional MCAN controller (13th or more) is added:

  • Flash via TFTP succeeds

  • After power cycle, no auto-boot output on UART (Tera Term)

  • System does not boot automatically

  • In debugger, an OS internal error (Os_ErrIsOsInternalException) is observed in stackframe view.

This occurs independent of which MCAN instance is added.

Questions

1. Is there a limit on the number of MCAN controllers supported in each Domain?

2. Are there additional configuration or resource constraints when moving MCANs from Main Domain to MCU Domain?

Regards,

Danilo