Intel 87C196CB Manual De Usuario
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7-19
CAN SERIAL COMMUNICATIONS CONTROLLER
CAN_EGMSK
(87C196CB)
(87C196CB)
Address:
Reset State:
1E0BH, 1E0AH,
1E09H, 1E08H
Unchanged
1E09H, 1E08H
Unchanged
Program the CAN extended global mask (CAN_EGMSK) register to mask (“don’t care”) specific
message identifier bits for extended message objects.
message identifier bits for extended message objects.
31
24
87C196CB
MSK4
MSK3
MSK2
MSK1
MSK0
—
—
—
23
16
MSK12
MSK11
MSK10
MSK9
MSK8
MSK7
MSK6
MSK5
15
8
MSK20
MSK19
MSK18
MSK17
MSK16
MSK15
MSK14
MSK13
7
0
MSK28
MSK27
MSK26
MSK25
MSK24
MSK23
MSK22
MSK21
Bit
Number
Bit
Mnemonic
Function
31:27
MSK4:0
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
1 = accept only an exact match
26:24
—
Reserved; for compatibility with future devices, write zeros to these bits.
23:16
15:8
7:0
15:8
7:0
MSK12:5
MSK20:13
MSK28:21
MSK20:13
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
1 = accept only an exact match
Figure 7-10. CAN Extended Global Mask (CAN_EGMSK) Register