Intel 87C196CB Manual De Usuario
87C196CB SUPPLEMENT
7-18
CAN_SGMSK
(87C196CB)
(87C196CB)
Address:
Reset State:
Reset State:
1E07H, 1E06H
Unchanged
Unchanged
Program the CAN standard global mask (CAN_SGMSK) register to mask (“don’t care”) specific
message identifier bits for standard message objects.
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
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
1 = accept only an exact match
Figure 7-9. CAN Standard Global Mask (CAN_SGMSK) Register