Freescale Semiconductor MPC5200B - Manual (Page 655)

MPC5200B Users Guide, Rev. 1
19-16 Freescale Semiconductor
Memory Map / Register Definition
19.5.14 MSCAN ID Acceptance Control Register (CANIDAC)—MBAR + 0x0915 / 0x0995
READ: Anytime
WRITE: Anytime in Initialization Mode (INITRQ = 1 and INITAK =1)
Table 19-17. MSCAN ID Acceptance Control Register
msb 0 1 2 3 4 5 6 7 lsb
R Reserved IDAM[1:0] Rsvd IDHIT[2:0]
W
RESET: 0 0 0 0 0 0 0 0
Bit Name Description
0:1 — Reserved
2:3 IDAM[1:0] Identifier Acceptance Mode—CPU sets these flags to define the identifier acceptance filter
organization. In filter closed mode, no message is accepted such that the foreground buffer
is never reloaded. See
Table 19-19 .
4 — Reserved
5:7 IDHIT[2:0] Identifier Acceptance Hit Indicator—MSCAN sets these flags to indicate an identifier
acceptance hit. See
Table 19-18 .
Table 19-18. Identifier Acceptance Hit Indication
IDHIT2 IDHIT1 IDHIT0 Identifier Acceptance Hit
0 0 0 Filter 0 Hit
0 0 1 Filter 1 Hit
0 1 0 Filter 2 Hit
0 1 1 Filter 3 Hit
1 0 0 Filter 4 Hit
1 0 1 Filter 5 Hit
1 1 0 Filter 6 Hit
1 1 1 Filter 7 Hit
Table 19-19. Identifier Acceptance Mode Settings
IDAM1 IDAM0 Identifier Acceptance Mode
0 0 Two 32-bit Acceptance Filters
0 1 Four 16-bit Acceptance Filters
1 0 Eight 8-bit Acceptance Filters
1 1 Filter Closed