Board Users Guide

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 01234567 lsb

Reserved IDAM[1:0] Rsvd IDHIT[2:0]

RESET:00000000

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

00 0Filter 0 Hit

00 1Filter 1 Hit

01 0Filter 2 Hit

01 1Filter 3 Hit

10 0Filter 4 Hit

10 1Filter 5 Hit

11 0Filter 6 Hit

11 1Filter 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