FlexRay Communication Controller (FLEXRAY)
Freescale Semiconductor
22-81
PXR40 Microcontroller Reference Manual, Rev. 1
Figure 22-106. Receive FIFO Structure
22.6.3.4
Message Buffer Configuration and Control Data
This section describes the configuration and control data for each message buffer type.
22.6.3.4.1
Individual Message Buffer Configuration Data
Before an individual message buffer can be used for transmission or reception, it must be configured.
There is a set of common configuration parameters that applies to all individual message buffers and a set
of configuration parameters that applies to each message buffer individually.
Common Configuration Data
The set of common configuration data for individual message buffers is located in the following registers.
•
Message Buffer Data Size Register (MBDSR)
The MBSEG2DS
and MBSEG1DS fields define the minimum length of the message buffer data
field with respect to the message buffer segment.
•
Message Buffer Segment Size and Utilization Register (MBSSUTR)
The LAST_MB_SEG1 and LAST_MB_UTIL fields define the segmentation of the individual
RFBRIR
RFDSR[B]
RFSIR[B]
RFARIR
RFDSR[A]
RFSIR[A]
Frame Header[1]
Slot Status[1]
Data Field Offset[1]
Receive FIFO Control Register
Message Buffer Header Fields
Message Buffer Data Fields
Frame Header[n]
Slot Status[n]
Data Field Offset[n]
(min) RFDSR[ENTRY_SIZE] * 2 bytes
R
F
DS
R[
F
IFO
_
D
E
P
TH
]
+
Frame Header[i]
Slot Status[i]
Data Field Offset[i]
Frame Data[n]
SADR_MBDF[n]
Frame Data[i]
SADR_MBDF[i]
Frame Data[1]
SADR_MBDF[1]
RFDSR
[FIFO_DEPT
H]
SADR_MBHF[n]
SADR_MBHF[i]
SADR_MBHF[1]
Fle
x
Ra
y Memor
y
Summary of Contents for PXR4030
Page 1: ...PXR40 Microcontroller Reference Manual Devices Supported PXR4030 PXR4040 PXR40RM Rev 1 06 2011...
Page 30: ...PXR40 Microcontroller Reference Manual Rev 1 Freescale Semiconductor xxx...
Page 40: ...PXR40 Microcontroller Reference Manual Rev 1 xl Freescale Semiconductor...
Page 66: ...Memory Map PXR40 Microcontroller Reference Manual Rev 1 2 4 Freescale Semiconductor...
Page 120: ...Signal Descriptions 3 54 Freescale Semiconductor PXR40 Microcontroller Reference Manual Rev 1...
Page 860: ...FlexCAN Module 24 50 Freescale Semiconductor PXR40 Microcontroller Reference Manual Rev 1...
Page 1167: ...Decimation Filter Freescale Semiconductor 28 53 PXR40 Microcontroller Reference Manual Rev 1...
Page 1168: ...Decimation Filter 28 54 Freescale Semiconductor PXR40 Microcontroller Reference Manual Rev 1...
