NEC UPD703116 User Manual page 524

<3> Mask setting for mask 1 (example)
(Using CAN1 address mask 1 registers L and H (C1MASKL1 and C1MASKH1))
CMID28 CMID27
1 0
CMID17 CMID16
1 1
CMID6 CMID5
1 1
Remark 1: Do not compare (mask)
0: Compare
Values are written to mask 1 (see 11.10 (19)), bits CMID27 to CMID24 and CMID22 are set to 0 and bits
CMID28, CMID23, and CMID21 to CMID0 are set to 1.
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CHAPTER 11 FCAN CONTROLLER
CMID26 CMID25 CMID24
0 0 0
CMID15 CMID14 CMID13
1 1 1
CMID4 CMID3 CMID2
1 1 1
User's Manual U14492EJ5V0UD
CMID23 CMID22 CMID21
1 0 1
CMID12 CMID11 CMID10
1 1 1
CMID1 CMID0
1 1
CMID20 CMID19 CMID18
1 1 1
CMID9 CMID8 CMID7
1 1 1