Message Data (Md0 To Md15); Figure 13.5 Message Data Configuration - Renesas H8SX/1520 Series Hardware Manual

Register
Name
MCx[6]
MCx[7]
MCx[8]
[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.
Mail box 0
Mail box 1
Mail box 2
Mail box 3
Mail box 15
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Bit Bit Name
7 to 0 ID-28 to ID-21
7 to 0 ID-7 to ID-0
7 to 0 ID-15 to ID-8
MD0[1] MD0[2]
MD1[1] MD1[2]
MD2[1] MD2[2]
MD3[1] MD3[2]
MD15[1] MD15[2]

Figure 13.5 Message Data Configuration

Section 13 Controller Area Network (HCAN)
R/W Description
R/W Sets ID-28 to ID-21 in the identifier.
R/W Sets ID-7 to ID-0 in the identifier.
R/W Sets ID-15 to ID-8 in the identifier.
MD0[3] MD0[4] MD0[5]
MD1[3] MD1[4] MD1[5]
MD2[3] MD2[4] MD2[5]
MD3[3] MD3[4] MD3[5]
MD15[3] MD15[4] MD15[5]
MD0[6] MD0[7]
MD1[6] MD1[7]
MD2[6] MD2[7]
MD3[6] MD3[7]
MD15[6] MD15[7] MD15[8]
Rev. 3.00 Mar. 14, 2006 Page 481 of 804
REJ09B0104-0300
MD0[8]
MD1[8]
MD2[8]
MD3[8]