mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 325

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

The bit time is determined by the oscillator frequency, the baud rate prescaler, and the number of time
quanta (Tq) clock cycles per bit (as shown in
15.3.4.1
A flag can be cleared only by software (writing a 1 to the corresponding bit position) when the condition
which caused the setting is no longer valid. Every flag has an associated interrupt enable bit in the
CANRIER register.
Freescale Semiconductor
Reset:
W
R
Bit
1
MSCAN Receiver Flag Register (CANRFLG)
Þ
WUPIF
This setting is not valid. Please refer to
TSEG13
Time
1
0
7
This setting is not valid. Please refer to
0
0
0
0
1
1
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
:
TSEG22
=
0
0
1
1
:
(
--------------------------------------------------------- -
Figure 15-7. MSCAN Receiver Flag Register (CANRFLG)
= Unimplemented
Prescaler
CSCIF
6
0
TSEG12
f CANCLK
0
0
0
0
1
1
:
TSEG21
Table 15-7. Time Segment 2 Values
Table 15-8. Time Segment 1 Values
RSTAT1
0
0
1
1
Þ
:
value
0
5
TSEG11
0
0
1
1
1
1
:
Table 15-7
)
•
Table 15-35
TSEG20
RSTAT0
(
1
Table 15-35
4
0
0
1
0
1
+
:
TimeSegment1
TSEG10
and
0
1
0
1
0
1
:
for valid settings.
TSTAT1
Table
for valid settings.
0
3
Freescale’s Controller Area Network (MSCANV1)
Time Segment 2
1 Tq clock cycle
2 Tq clock cycles
7 Tq clock cycles
8 Tq clock cycles
15-8).
15 Tq clock cycles
16 Tq clock cycles
2 Tq clock cycles
3 Tq clock cycles
Time segment 1
4 Tq clock cycles
1 Tq clock cycle
+
TSTAT0
:
TimeSegment2
2
0
:
1
1
OVRIF
1
1
0
1
)
Eqn. 15-1
RXF
0
0
15-9