Mitsubishi Electric M32R Series User Manual page 647

Mitsubishi 32-bit risc single-chip microcomputers

Table of Contents

CAN0 Global Mask Register Extended ID2 (C0GMSKE2)

CAN0 Local Mask Register A Extended ID2 (C0LMSKAE2) <Address:H'0080 1034>

CAN0 Local Mask Register B Extended ID2 (C0LMSKBE2) <Address:H'0080 103C>

No functions assigned

EID12M-EID17M

(Extended ID12 to extended ID17)

Three registers are used in acceptance filtering: Global Mask Register, Local Mask Register A, and

Local Mask Register B. The Global Mask Register is used for message slots 0-13, while Local

Mask Registers A and B are used for message slots 14 and 15, respectively.

• When a bit in this register is set to 0, its corresponding ID bit is masked (assumed to have

matched) during acceptance filtering.

• When a bit in this register is set to 1, its corresponding ID bit is compared with the receive ID

during acceptance filtering and when it matches the ID set for the message slot, the received

data is stored in it.

Note 1: EID0M corresponds to the MSB of extended ID.

Note 2: The Global Mask Register can only be changed when none of slots 0-13 have receive

requests set.

Note 3: The Local Mask Register A can only be changed when slot 14 does not have a receive

request set.

Note 4: The Local Mask Register B can only be changed when slot 15 does not have a receive

request set.

13.2 CAN Module Related Registers

<Address:H'0080 102C>

0: ID not checked

1: ID checked