NEC UPD703116 User Manual page 604

(y = 0 to 17)
Mask setting for standard frame
(x = 18 to 28)
Mask setting for message
ID format
604
CHAPTER 11 FCAN CONTROLLER
Figure 11-36. CAN1 Address Mask a Registers L and H
(C1MASKLa and C1MASKHa) (a = 0 to 3) Settings
START
Standard frame
Yes
CMIDy = 1
Mask ID bit?
No
CMIDx = 0 CMIDx = 1
Check ID type?
Yes
CMIDE = 0 CMIDE = 1
User's Manual U14492EJ5V0UD
No
Yes
Mask ID bit?
CMIDx = 0
No
Mask setting for extended frame
(x = 0 to 28)
Yes
No
CMIDx = 1