CSM9S12XDT512SLK Freescale Semiconductor, CSM9S12XDT512SLK Datasheet - Page 466

Manufacturer Part Number

CSM9S12XDT512SLK

KIT STUDENT LEARNING 16BIT

Manufacturer

Freescale Semiconductor

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Chapter 10 Freescale’s Scalable Controller Area Network (S12MSCANV3)

The synchronization jump width (see the Bosch CAN speciﬁcation for details) can be programmed in a

range of 1 to 4 time quanta by setting the SJW parameter.

The SYNC_SEG, TSEG1, TSEG2, and SJW parameters are set by programming the MSCAN bus timing

registers (CANBTR0, CANBTR1) (see

The MSCAN module behaves as described within this speciﬁcation in all normal system operation modes.

The MSCAN module behaves as described within this speciﬁcation in all special system operation modes.

Section 10.3.2.4, “MSCAN Bus Timing Register 1

Time Segment 1

Modes of Operation

gives an overview of the CAN compliant segment settings and the related parameter values.

Normal Modes

Special Modes

It is the user’s responsibility to ensure the bit time settings are in compliance

with the CAN standard.

Transmit Point

Sample Point

Table 10-35. CAN Standard Compliant Bit Time Segment Settings

System expects transitions to occur on the CAN bus during this

A node in transmit mode transfers a new value to the CAN bus at

A node in receive mode samples the CAN bus at this point. If the

three samples per bit option is selected, then this point marks the

position of the third sample.

Table 10-34. Time Segment Syntax

MC9S12XDP512 Data Sheet, Rev. 2.21

Time Segment 2

Section 10.3.2.3, “MSCAN Bus Timing Register 0

(CANBTR1)”).

Synchronization

Freescale Semiconductor