MC68HC08AZ32A Datasheet, PDF (351/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
MSCAN08 Controller (MSCAN08)
Programmer’s Model of Message Storage
20.13.3 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 20-5 shows the effect of setting the DLC bits.
Table 20-5. Data Length Codes
Data Length Code
DLC3 DLC2 DLC1 DLC0
Data
Byte
Count
0
0
0
0
0
0
0
0
1
1
0
0
1
0
2
0
0
1
1
3
0
1
0
0
4
0
1
0
1
5
0
1
1
0
6
0
1
1
1
7
1
0
0
0
8
20.13.4 Data Segment Registers (DSRn)
The eight data segment registers contain the data to be transmitted or
received. The number of bytes to be transmitted or being received is
determined by the data length code in the corresponding DLR.
MC68HC08AZ32A — Rev 1.0
MOTOROLA
MSCAN08 Controller (MSCAN08)
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Technical Data
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