mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 130

• Manufacturer Part Number: mfr4300
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

FlexRay Module (FLEXRAYV2)
3.3.2.65
This register contains message buffer configuration data for the transmission mode, the channel
assignment, and for the cycle counter filtering. For detailed information on cycle counter filtering, refer to
Section 3.4.7.1.2, “Message Buffer Cycle Counter
130
0x0102, 0x010A,..., 0x04FA
Reset
CCFMSK
CCFVAL
14–13
LCKS
CCFE
W
Field
MBIF
Field
MTM
11–6
CHA
CHB
EDS
R
5–0
15
12
2
1
0
MTM
15
Enable/Disable Status — This status bit indicates whether the message buffer is enabled or disabled.
0 Message buffer is disabled.
1 Message buffer is enabled.
Lock Status — This status bit indicates the current lock status of the message buffer.
0 Message buffer is not locked by the application.
1 Message buffer is locked by the application.
Message Buffer Interrupt Flag — The semantic of this flag depends on the message buffer transfer direction.
0 slot status not updated
1 slot status updated and slot was not an empty dynamic slot
0 slot status not updated
1 slot status updated / message buffer just enabled
Writing a '1' clears this flag. Writing a ‘0’ will not change the flag state.
Message Buffer Transmission Mode — This control bit applies only to transmit message buffers and defines
the transmission mode.
0 Event transmission mode
1 State transmission mode
Channel Assignment — These control bits define the channel assignment and control the receive and transmit
behavior of the message buffer according to
Cycle Counter Filtering Enable — This control bit is used to enable and disable the cycle counter filtering.
0 Cycle counter filtering disabled
1 Cycle counter filtering enabled
Cycle Counter Filtering Mask — This field defines the filter mask for the cycle counter filtering.
Cycle Counter Filtering Value — This field defines the filter value for the cycle counter filtering.
• Receive Message Buffer: This flag is set when the slot status in the message buffer header field was updated
• Transmit Message Buffer: This flag is set when the slot status in the message buffer header field was updated.
CHA
Message Buffer Cycle Counter Filter Registers (MBCCFRn)
14
and this slot was not an empty dynamic slot. See
detailed description of the update conditions.
Additionally this flag is set immediately when a transmit message buffer was enabled.
Figure 3-94. Message Buffer Cycle Counter Filter Registers (MBCCFRn)
CHB CCFE
13
Table 3-75. MBCCSRn Field Descriptions (Sheet 3 of 3)
12
bits located in physical memory, not affected by reset, no reset value
Table 3-76. MBCCFRn Field Descriptions
11
10
MFR4300 Data Sheet, Rev. 3
CCFMSK
9
Table
Filtering”.
8
Description
Description
3-77.
Section 3.4.6.3.4, “Message Buffer Status Update”
7
6
5
4
Write:
CCFVAL
3
Freescale Semiconductor
POC:config
2
1
or MB_DIS
for a
0