MC68HC08AZ16 Datasheet, PDF (375/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

msCAN08 Controller (msCAN08)
Data length
register (DLR)
This register keeps the data length field of the CAN frame.
DLC3 – DLC0 — Data length code bits
The data length code contains the number of bytes (data byte count)
of the respective message. At transmission of a remote frame, the
data length code is transmitted as programmed while the number of
transmitted bytes is always 0. The data byte count ranges from 0 to 8
for a data frame. Table 4 shows the effect of setting the DLC bits.
Table 4. Data length codes
DLC3
0
0
0
0
0
0
0
0
1
Data length code
DLC2 DLC1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
0
0
DLC0
0
1
0
1
0
1
0
1
0
Data
byte
count
0
1
2
3
4
5
6
7
8
Data segment
registers (DSRn)
The eight data segment registers contain the data to be transmitted or
being received. The number of bytes to be transmitted or being received
is determined by the data length code in the corresponding DLR.
MC68HC08AZ32
374
msCAN08 Controller (msCAN08)
28-can
MOTOROLA