mc9s08dz32amlfr Freescale Semiconductor, Inc, mc9s08dz32amlfr Datasheet - Page 282

• Manufacturer Part Number: mc9s08dz32amlfr
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 12 Freescale’s Controller Area Network (S08MSCANV1)
12.4.4
This register keeps the data length field of the CAN frame.
282
DLC[3:0]
DB[7:0]
Field
Field
7:0
3:0
Reset:
Reset:
W
W
Figure 12-33. Data Segment Registers (DSR0–DSR7) — Extended Identifier Mapping
R
R
Data Length Register (DLR)
Data bits 7:0
Data Length Code Bits — The data length code contains the number of bytes (data byte count) of the respective
message. During the transmission of a remote frame, the data length code is transmitted as programmed while
the number of transmitted data bytes is always 0. The data byte count ranges from 0 to 8 for a data frame.
Table 12-33
DB7
Figure 12-34. Data Length Register (DLR) — Extended Identifier Mapping
7
x
7
x
shows the effect of setting the DLC bits.
= Unused; always read “x”
Table 12-31. DSR0–DSR7 Register Field Descriptions
DB6
6
x
6
x
Table 12-32. DLR Register Field Descriptions
MC9S08DZ128 Series Data Sheet, Rev. 1
DB5
x
5
5
x
DB4
4
x
4
x
Description
Description
DLC3
DB3
x
x
3
3
DLC2
DB2
2
x
2
x
Freescale Semiconductor
DLC1
DB1
x
x
1
1
DLC0
DB0
0
x
0
x