mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 183
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mfr4300
Manufacturer Part Number
mfr4300
Description
Flexray Communication Controllers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MFR4300.pdf
(266 pages)
- Current page: 183 of 266
- Download datasheet (2Mb)
The RX FIFO Frame ID Value-Mask Rejection Filter can be configured to pass all frames by the following
settings.
Using the settings above, only the frame with frame ID 0 will be rejected, which is an invalid frame. All
other frames will pass.
The RX FIFO Frame ID Value-Mask Rejection Filter can be configured to reject all frames by the
following settings.
Using the settings above,
frame will pass. This is the reset value for the RX FIFO.
3.4.9.5.2
Each of the four RX FIFO Frame ID Range filters can be configured as a rejection filter. The filters are
configured by the
Receive FIFO Range Filter Control Register
all received valid frames. A received frame with the frame ID FID passes the RX FIFO Frame ID Range
rejection filters if either no rejection filter is enabled, or, for all of the enabled RX FIFO Frame ID Range
rejection filters, i.e. RFRFCTR.FiMD = 1 and RFRFCTR.FiEN = 1,
Consequently, all frames with a frame ID that fulfills
filters will be rejected and thus not pass.
3.4.9.5.3
Each of the four RX FIFO Frame ID Range filters can be configured as an acceptance filter. The filters are
configured by the
Receive FIFO Range Filter Control Register
all received valid frames. A received frame with the frame ID FID passes the RX FIFO Frame ID Range
acceptance filters if either no acceptance filter is enabled, or, for at least one of the enabled RX FIFO Frame
ID Range acceptance filters, i.e. RFRFCTR.FiMD = 0 and RFRFCTR.FiEN = 1,
3.4.9.5.4
The RX FIFO Message ID Acceptance Filter is a value-mask filter and is defined by the
Message ID Acceptance Filter Value Register (RFMIDAFVR)
Acceptance Filter Mask Register
dynamic segment with the payload preamble indicator bit PPI set to ‘1’. All other frames will pass this
filter.
Freescale Semiconductor
•
•
RFFIDRFVR.FIDRFVAL:= 0x000 and RFFIDRFMR.FIDRFMSK:= 0x7FF
RFFIDRFMR.FIDRFMSK:= 0x000
RX FIFO Frame ID Range Rejection Filter
RX FIFO Frame ID Range Acceptance filter
RX FIFO Message ID Acceptance Filter
Receive FIFO Range Filter Configuration Register (RFRFCFR)
Receive FIFO Range Filter Configuration Register (RFRFCFR)
FID < RFRFCFRi.SID(0) and RFRFCFRi.SID(1) < FID
RFRFCFRi.SID(0) <= FID <= RFRFCFRi.SID(1)
Equation 3-10
RFRFCFRi.SID(0) <= FID <= RFRFCFRi.SID(1)
(RFMIAFMR). This filter applies only to valid frames received in the
MFR4300 Data Sheet, Rev. 3
can never be fulfilled (0!= 0) and thus all frames are rejected; no
(RFRFCTR). The RX FIFO Frame ID range filters apply to
(RFRFCTR). The RX FIFO Frame ID range filters apply to
Equation 3-12
and the
for at least one of the enabled rejection
Equation 3-11
Receive FIFO Message ID
Equation 3-13
FlexRay Module (FLEXRAYV2)
and controlled by the
and controlled by the
is fulfilled.
Receive FIFO
is fulfilled.
Eqn. 3-11
Eqn. 3-12
Eqn. 3-13
183
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