Section 13 Controller Area Network (HCAN)
Rev. 3.00 Mar. 14, 2006 Page 481 of 804
REJ09B0104-0300
Register
Name Bit Bit
Name R/W
Description
MCx[6]
7 to 0
ID-28 to ID-21
R/W
Sets ID-28 to ID-21 in the identifier.
MCx[7]
7 to 0
ID-7 to ID-0
R/W
Sets ID-7 to ID-0 in the identifier.
MCx[8]
7 to 0
ID-15 to ID-8
R/W
Sets ID-15 to ID-8 in the identifier.
[Legend]
x: Mailbox number (0 to 15)
13.3.19 Message Data (MD0 to MD15)
The message data register sets consist of eight 8-bit registers for one mailbox. The HCAN has 16
sets of these registers. Because message data registers are in RAM, their initial values after power-
on are undefined. Be sure to initialize them by writing 0 or 1. Figure 13.5 shows the register
names for each mailbox.
MD0[1]
MD1[1]
MD2[1]
MD3[1]
MD15[1]
MD0[2]
MD1[2]
MD2[2]
MD3[2]
MD15[2]
MD0[3]
MD1[3]
MD2[3]
MD3[3]
MD15[3]
MD0[4]
MD1[4]
MD2[4]
MD3[4]
MD15[4]
MD0[5]
MD1[5]
MD2[5]
MD3[5]
MD15[5]
MD0[6]
MD1[6]
MD2[6]
MD3[6]
MD15[6]
MD0[7]
MD1[7]
MD2[7]
MD3[7]
MD15[7]
MD0[8]
MD1[8]
MD2[8]
MD3[8]
MD15[8]
Mail box 0
Mail box 1
Mail box 2
Mail box 3
Mail box 15
Figure 13.5 Message Data Configuration
electronic components distributor
