Mailbox Configuration Register (Mbcr) - Renesas H8SX/1500 Series Hardware Manual

Section 13 Controller Area Network (HCAN)
13.3.4

Mailbox Configuration Register (MBCR)

MBCR sets the transfer direction for each mailbox.
Bit 15
Bit Name MBCR7
Initial Value 0
R/W R/W
Bit 7
Bit Name MBCR15
Initial Value 0
R/W R/W
Bit Bit Name
15 MBCR7
14 MBCR6
13 MBCR5
12 MBCR4
11 MBCR3
10 MBCR2
9 MBCR1

8
7 MBCR15
6 MBCR14
5 MBCR13
4 MBCR12
3 MBCR11
2 MBCR10
1 MBCR9
0 MBCR8
Rev. 3.00 Mar. 14, 2006 Page 458 of 804
REJ09B0104-0300
14 13
MBCR6 MBCR5 MBCR4
0 0
R/W R/W
6 5
MBCR14 MBCR13 MBCR12
0 0
R/W R/W
Initial
Value R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
1 R
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
12 11 10
MBCR3 MBCR2
0 0
R/W R/W R/W
4 3
MBCR11 MBCR10
0 0
R/W R/W R/W
Description
These bits set the transfer direction for the
corresponding mailboxes 1 to 15. MBCRn
determines the transfer direction for mailbox n (n
=1 to 15).
0: Corresponding mailbox is set for transmission
1: Corresponding mailbox is set for reception
Bit 8 is reserved. This is a read-only bit and cannot
be modified.
9 8
MBCR1 —
0 0 1
R/W R
2 1 0
MBCR9 MBCR8
0 0 0
R/W R/W