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87C196CB SUPPLEMENT
7-18
CAN_SGMSK
(87C196CB)
Address:
Reset State:
1E07H, 1E06H
Unchanged
Program the CAN standard global mask (CAN_SGMSK) register to mask (“don’t care”) specific
message identifier bits for standard message objects.
15 8
87C196CB
MSK20 MSK19 MSK18 — — — — —
7 0
MSK28 MSK27 MSK26 MSK25 MSK24 MSK23 MSK22 MSK21
Bit
Number
Bit
Mnemonic
Function
15:13 MSK20:18 ID Mask
These bits individually mask incoming message identifier (ID) bits.
0 = mask the ID bit (accept either “0” or “1”)
1 = accept only an exact match
12:8 — Reserved; for compatibility with future devices, write zeros to these bits.
7:0 MSK28:21 ID Mask
These bits individually mask incoming message identifier (ID) bits.
0 = mask the ID bit (accept either “0” or “1”)
1 = accept only an exact match
Figure 7-9. CAN Standard Global Mask (CAN_SGMSK) Register