MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 366

• Manufacturer Part Number: MC68HC08AZ60ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

MSCAN08 Controller (MSCAN08)
Advance Information
366
NOTE:
A bit time is subdivided into three segments
The synchronization jump width (SJW) can be programmed in a range
of 1 to 4 time quanta by setting the SJW parameter.
The above parameters can be set by programming the bus timing
registers, CBTR0–CBTR1, see
page 380 and
It is the user’s responsibility to make sure that the bit timing settings are
in compliance with the CAN standard,
Table 21-8
and the related parameter values.
1. For further explanation of the underlying concepts please refer to ISO/DIS 11 519-1, Section
10.3.
•
•
•
SYNC_SEG: This segment has a fixed length of one time
quantum. Signal edges are expected to happen within this section.
Time segment 1: This segment includes the PROP_SEG and the
PHASE_SEG1 of the CAN standard. It can be programmed by
setting the parameter TSEG1 to consist of 4 to 16 time quanta.
Time segment 2: This segment represents PHASE_SEG2 of the
CAN standard. It can be programmed by setting the TSEG2
parameter to be 2 to 8 time quanta long.
MSCAN08 Controller (MSCAN08)
gives an overview on the CAN conforming segment settings
MSCAN08 Bus Timing Register 1
Bit rate=
f
Tq
=
No. of time quanta
Presc value
MSCAN08 Bus Timing Register 0
f
MSCANCLK
f
Tq
(1)
(see
MC68HC08AZ60A — Rev 0.0
on page 381).
Figure
21-8).
MOTOROLA
on