MC68HC12 MOTOROLA [Motorola, Inc], MC68HC12 Datasheet - Page 344

• Manufacturer Part Number: MC68HC12
• Description: The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit
• Manufacturer: MOTOROLA [Motorola, Inc]

MSCAN Controller
Technical Data
344
The synchronization jump width can be programmed in a range of 1 to 4
time quanta by setting the SJW parameter.
Above parameters can be set by programming the bus timing registers
(CBTR0–1, see
msCAN12 Bus Timing Register 1
It is the user’s responsibility to make sure that his bit time settings are in
compliance with the CAN standard.
the CAN conforming segment settings and the related parameter values.
•
•
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 the PHASE_SEG2 of
the CAN standard. It can be programmed by setting the TSEG2
parameter to be 2 to 8 time quanta long.
Transmit point
SYNC
_SEG
1
Figure 18-8. Segments within the Bit Time
NRZ Signal
MSCAN Controller
msCAN12 Bus Timing Register 0 (CBTR0)
(PROP_SEG + PHASE_SEG1)
8... 25 Time Quanta
= 1 Bit Time
Time segment 1
4 ... 16
(CBTR1)).
Figure 18-9
MC68HC912DT128A — Rev 4.0
gives an overview on
Sample point
(single or triple sampling)
(PHASE_SEG2)
Time Seg. 2
2 ... 8
and
MOTOROLA