Microcontroller
Peripheral Timing
Calculator

In this mode, one 32-bit filter bank is used to include the following CAN frame bits into the hardware filter:

• 11-bit ID (Standard ID)
• 1-bit RTR (Remote frame)
• 8-bit (Data byte 1)
• 8-bit (Data byte 2)

For details about activating this mode, see the data sheet, section "Acceptance Filter".

Code(match) register ACR0 and ACR1, mask register AMR0 and AMR1

Enter the desired filter bit pattern for the 11-bit ID and 1-bit RTR, then hit the "Calculate" button.

NOTE: During arbitration, the identifiers are compared with the most significant bits firsts. If a 29-bit ID gets compared to an 11-bit ID, these 11-bits are compared to the 11 most significant bits of the 29-bit ID (bit 18 to 28).

The entries above require the following settings for the code(match) registers and the mask registers:

Code(match) register ACR2 and ACR3, mask register AMR2 and AMR3

These registers directly correspond to the first and second data byte of the CAN frame. For details, see the data sheet, section "Single Filter Configuration".