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Transcript
IFLEX
SAK-CIC310-OSMX2HT
FlexRay Protocol Controller (E-Ray)
Field Bits
Type Description
PLR
[30:24] rh
Payload Length Received (vRF!Header!Length)
Payload length value updated from received data frame
(exception: if message buffer belongs to the receive FIFO PLR is
also updated from received null frames). When a message is
stored into a message buffer the following behavior with respect
to payload length received and payload length configured is
implemented:
• PLR > PLC: The payload data stored in the message buffer
is truncated to the payload length configured for even PLC or
else truncated to PLC + 1.
• PLR ≤ PLC: The received payload data is stored into the
message buffers data section. The remaining data bytes of
the data section as configured by PLC are filled with
undefined data.
• PLR = 0: The message buffer’s data section is filled with
undefined data.
• PLC = 0: Message buffer has no data section configured. No
data is stored into the
message buffer’s data section.
0
[15:11], r
23, 31
Reserved
Returns 0 if read; should be written with 0.
Note: The Message RAM is organized in 4-byte words. When received data is stored
into a message buffer’s data section, the number of 2-byte data words written into
the message buffer is PLC rounded to the next even value. PLC should be
configured identical for all message buffers belonging to the receive FIFO. Header
2 is updated from data frames only.
User’s Manual
E-Ray, V2.5, 2007-01
2-165
V 2.1, 2007-02