PXS20RM Datasheet, PDF (805/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

FlexRay Communication Controller
26.5.2.80 Message Buffer Frame ID Registers (FR_MBFIDRn)
Base + 0x0104 (FR_MBFIDR0)
Base + 0x010C (FR_MBFIDR1)
...
Base + 0x02FC (FR_MBFIDR63)
16-bit write access required
Write: POC:config or MB_DIS
0
R0
W
Reset 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
0
0
0
FID
0
0
0
0
-
-
-
-
-
-
-
-
-
-
-
Figure 26-111. Message Buffer Frame ID Registers (FR_MBFIDRn)
Table 26-92. FR_MBFIDRn Field Descriptions
Field
FID
Description
Frame ID — The semantic of this field depends on the message buffer transfer type.
• Receive Message Buffer: This field is used as a filter value to determine if the message buffer is used for
reception of a message received in a slot with the slot ID equal to FID.
• Transmit Message Buffer: This field is used to determine the slot in which the message in this message buffer
should be transmitted.
26.5.2.81 Message Buffer Index Registers (FR_MBIDXRn)
Base + 0x0106 (FR_MBIDXR0)
Base + 0x010E (FR_MBIDXR1)
...
Base + 0x02FE (FR_MBIDXR63)
16-bit write access required
Write: POC:config or MB_DIS
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R0
0
0
0
0
0
0
0
0
W
MBIDX
Reset 0
0
0
0
0
0
0
0
0
-
-
-
-
-
-
-
Figure 26-112. Message Buffer Index Registers (FR_MBIDXRn)
Table 26-93. FR_MBIDXRn Field Descriptions
Field
MBIDX
Description
Message Buffer Index — This field provides the index of the message buffer header field of the physical
message buffer that is currently associated with this message buffer.
The application writes the index of the initially associated message buffer header field into this register. The CC
updates this register after frame reception or transmission.
26.6 Functional Description
This section provides a detailed description of the functionality implemented in the CC.
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
26-93