Rainbow Electronics AT91CAP9S250A - Manual (Page 730)

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6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
39.8.15 CAN Message Family ID Register
Name: CAN_MFIDx
Access Type: Read-only
• MFID: Family ID
This field contains the concatenation of CAN_MIDx register bits masked by the CAN_MAMx register. This field is useful to
speed up message ID decoding. The message acceptance procedure is described below.
As an example:
CAN_MIDx = 0x305A4321
CAN_MAMx = 0x3FF0F0FF
CAN_MFIDx = 0x000000A3
31 30 29 28 27 26 25 24
– – – MFID
23 22 21 20 19 18 17 16
MFID
15 14 13 12 11 10 9 8
MFID
7 6 5 4 3 2 1 0
MFID