Disabled RX Buffer

Acceptance filtering is performed in this sequence:

1. The incoming identifier is masked with the bits in the acceptance filter mask register.
2. The AF_ID_Reg_n acceptance filter ID registers are also masked with the bits in the AF_Mask_Reg_n acceptance filter mask register.
3. Both resulting values are compared.
4. If both these values are equal, the message is stored in the RX buffer 0.
5. Acceptance filtering is processed by each of the defined filters. If the incoming identifier passes through any acceptance filter, the message is stored in the RX buffer 0.