Datasheet

Section 15 Controller Area Network for Tiny (TinyCAN)
Rev. 4.00 Mar. 15, 2006 Page 306 of 556
REJ09B0026-0400
15.3.6 Mailbox Configuration Register (MBCR)
MBCR configures each Mailbox as either reception or transmission, except for the receive-only
Mailbox. Changing the corresponding bits for the receive-only Mailbox is ignored.
Bit Bit Name
Initial
Value R/W Description
7 to 4 — All 0 — Reserved
These bits are always read as 0.
3
2
1
MB3
MB2
MB1
0
0
0
R/W
R/W
R/W
These bits are configured for the corresponding
Mailboxes.
0: Corresponding Mailbox is configured as transmission
1: Corresponding Mailbox is configured as reception
0 — 1 — Reserved
This bit is always read as 1. This bit is relevant to the
receive-only Mailbox, and its value cannot be changed.