mc68hc05x4dw Freescale Semiconductor, Inc, mc68hc05x4dw Datasheet - Page 90

• Manufacturer Part Number: mc68hc05x4dw
• Description: Xc68hc705x4 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Motorola CAN
MC68HC05X4
TSEG13 TSEG12 TSEG11 TSEG10 Time segment 1
Transmit point
0
0
0
1
.
.
SYNC_SEG
0
0
0
1
.
.
0
1
1
1
.
.
SYNC_SEG
this period.
Transmit point A node in transmit mode will transfer a new value to the
MCAN bus at this point.
Sample point
If the three samples per bit option is selected then this point marks the
position of the third sample.
Time segment 1 (TSEG1) and time segment 2 (TSEG2) are
programmable as shown in
The bit time is determined by the oscillator frequency, the baud rate
prescaler, and the number of bus clock cycles (
above).
Figure 13. Segments within the bit time
Freescale Semiconductor, Inc.
1
0
1
1
.
.
1 clock cycle
For More Information On This Product,
Table 3. Time segment values
t
SCL
16 t
TSEG 1
2 t
3 t
4 t
Go to: www.freescale.com
SCL
SCL
SCL
SCL
System expects transitions to occur on the bus during
A node in receive mode will sample the bus at this point.
BIT_TIME
.
.
cycles
cycles
cycles
Motorola CAN
cycles
Table
TSEG22 TSEG21 TSEG20 Time segment 2
Sample point
0
1
.
.
3.
0
1
.
.
TSEG 2
t
SCL
1
1
) per bit (as shown
.
.
Transmit point
2 t
8 t
SYNC_SEG
SCL
SCL
.
.
cycles
cycles
22-mcan