MC68HC908GZ8 FREESCALE [Freescale Semiconductor, Inc], MC68HC908GZ8 Datasheet - Page 144

• Manufacturer Part Number: MC68HC908GZ8
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

MSCAN08 Controller (MSCAN08)
WUPM — Wakeup Mode
CLKSRC — Clock Source
12.13.3 MSCAN08 Bus Timing Register 0
SJW1 and SJW0 — Synchronization Jump Width
BRP5–BRP0 — Baud Rate Prescaler
144
This flag defines whether the integrated low-pass filter is applied to protect the MSCAN08 from
spurious wakeups (see
This flag defines which clock source the MSCAN08 module is driven from (see
The synchronization jump width (SJW) defines the maximum number of time quanta (T
by which a bit may be shortened, or lengthened, to achieve resynchronization on data transitions on
the bus (see
These bits determine the time quanta (T
according to
1 = MSCAN08 will wakeup the CPU only in cases of a dominant pulse on the bus which has a length
0 = MSCAN08 will wakeup the CPU after any recessive-to-dominant edge on the CAN bus.
1 = The MSCAN08 clock source is CGMOUT (see
0 = The MSCAN08 clock source is CGMXCLK/2 (see
of at least t
Address:
The CMCR1 register can be written only if the SFTRES bit in the MSCAN08
module control register is set
Reset:
Table
Read:
Table
Write:
wup
12-7.
12-6).
$0502
SJW1
Bit 7
.
0
12.8.5 Programmable Wakeup
SJW1
Figure 12-18. Bus Timing Register 0 (CBTR0)
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
0
0
1
1
Table 12-6. Synchronization Jump Width
SJW0
6
0
BRP5
5
0
q
) clock, which is used to build up the individual bit timing,
NOTE
SJW0
BRP4
4
0
0
1
0
1
Figure
Function).
BRP3
Figure
3
0
12-8).
12-8).
Synchronization
BRP2
Jump Width
2
0
1 T
2 T
3 T
4 T
q
q
q
q
cycle
cycle
cycle
cycle
BRP1
1
0
12.10 Clock
Freescale Semiconductor
BRP0
Bit 0
0
q
) clock cycles
System).