Message Data (Md0 To Md15); Figure 15.5 Message Data Configuration - Renesas H8S Series Hardware Manual

Register
Name Bit
MCx[7] 7 to 0
MCx[8] 7 to 0
Note: x: Mailbox number

15.3.19 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 15.5 shows the register
names for each mailbox.
Mail box 0 MD0[1]
Mail box 1 MD1[1]
Mail box 2 MD2[1]
Mail box 3 MD3[1]
Mail box 15 MD15[1]
Bit Name R/W
ID-7 to ID-0 R/W
ID-15 to ID-8 R/W
MD0[2] MD0[3]
MD1[2] MD1[3]
MD2[2] MD2[3]
MD3[2] MD3[3]
MD15[2] MD15[3]

Figure 15.5 Message Data Configuration

Section 15 Controller Area Network (HCAN)
Description
Sets ID-7 to ID-0 in the identifier.
Sets ID-15 to ID-8 in the identifier.
MD0[4] MD0[5] MD0[6]
MD1[4] MD1[5] MD1[6]
MD2[4] MD2[5] MD2[6]
MD3[4] MD3[5] MD3[6]
MD15[4] MD15[5] MD15[6]
Rev. 6.00 Mar 15, 2006 page 413 of 570
MD0[7] MD0[8]
MD1[7] MD1[8]
MD2[7] MD2[8]
MD3[7] MD3[8]
MD15[7] MD15[8]
REJ09B0211-0600