NXP Semiconductors PXN2020 - 26.5.2.69 Message Buffer Cycle Counter Filter Registers (MBCCFRn)

FlexRay Communication Controller (FlexRAY)
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor 26-75
26.5.2.69 Message Buffer Cycle Counter Filter Registers (MBCCFRn)
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 26.6.7.1, Message Buffer Cycle Counter Filtering.
.
Base + 0x0102 (MBCCFR0)
Base + 0x010A (MBCCFR1)
...
Base + 0x04FA (MBCCFR127)
Write: POC:config or MB_DIS
0123456789101112131415
R
MTM CHA CHB CCFE CCFMSK CCFVAL
W
Reset----------------
Figure 26-100. Message Buffer Cycle Counter Filter Registers (MBCCFRn)
Table 26-80. MBCCFRn Field Descriptions
Field Description
MTM 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.
CHA
CHB
Channel Assignment — These control bits define the channel assignment and control the receive and transmit
behavior of the message buffer according to Table 26-81.
CCFE 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.
CCFMSK Cycle Counter Filtering Mask — This field defines the filter mask for the cycle counter filtering.
CCFVAL Cycle Counter Filtering Value — This field defines the filter value for the cycle counter filtering.
Table 26-81. Channel Assignment Description
CHA CHB
Transmit Message Buffer Receive Message Buffer
static segment dynamic segment static segment dynamic segment
1 1 transmit on both channel A
and channel B
transmit on channel A only store first valid frame
received on either
channel A or channel B
store first valid frame
received on channel A,
ignore channel B
0 1 transmit on channel B transmit on channel B store first valid frame
received on channel B
store first valid frame
received on channel B
1 0 transmit on channel A transmit on channel A store first valid frame
received on channel A
store first valid frame
received on channel A
0 0 no frame transmission no frame transmission no frame stored no frame stored