66AK2H06: IPC interrupt delay (Again)

Part Number: 66AK2H06

Hi xeprts,

This is a follow-up to the previous thread.

Initially, the issue was observed when an IPC interrupt was generated to the same DSP core (Core0 → Core0).However, we have since found that the same issue can also occur when the IPC interrupt is generated to a different DSP core (Core0 → Core1).

Q1:Is it possible that a delay of about 500 usec occurs between the IPC interrupt request and the start of IPC interrupt processing on different core due to the specifications of the 66AK2H06?

Q2. If a delay of about 500 usec does not normally occur in [Q1], could you please tell me the possible causes and the points I should check? 

Best regards,
O.H