mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 363

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

22.13.3 Data Length Register
22.13.4 Data Segment Registers
MC68HC08QA24
Freescale Semiconductor
The data length register (DLR) keeps the data length field of the CAN
frame.
DLC3–DLC0 — Data Length Code Bits
The eight data segment registers (DSRn) 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.
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.
DLC3
0
0
0
0
0
0
0
0
1
CAN Controller
Table 22-3. Data Length Codes
Table 22-3
DLC2
Data Length Code
0
0
0
0
1
1
1
1
0
shows the effect of setting the DLC bits.
DLC1
0
0
1
1
0
0
1
1
0
DLC0
0
1
0
1
0
1
0
1
0
Data Byte
Count
CAN Controller
Technical Data
0
1
2
3
4
5
6
7
8
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