mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 191

• Manufacturer Part Number: mfr4300
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

globally disabled, i.e. the SFFE control bit in the
received synchronization frames are considered for clock synchronization. If a received synchronization
frame did not pass at least one of the two filters, this frame is processed as a normal frame and is not
considered for clock synchronization.
3.4.15.1
The synchronization frame acceptance filter is implemented as a value-mask filter. The value is configured
in the
Sync Frame ID Acceptance Filter Mask Register
the frame ID FID passes the sync frame acceptance filter, if
true.
3.4.15.2
The synchronization frame rejection filter is a comparator. The compare value is defined by the
Frame ID Rejection Filter Register
passes the sync frame rejection filter if
3.4.16
The FlexRay module provides a number of strobe signals for observing internal protocol timing related
signals in the protocol engine. The signals are listed and described in
3.4.16.1
Each of the strobe signals listed in
Strobe Signal Control Register
multiple times to the
To read out the current settings for a strobe signal with number N, the application must execute the
following sequence.
Freescale Semiconductor
1. Write to STBSCR with WMD = 1 and SEL = N. (updates SEL field only)
Sync Frame ID Acceptance Filter Value Register (SFIDAFVR)
FID 9:0
>
Strobe Signal Support
Sync Frame Acceptance Filtering
Sync Frame Rejection Filtering
Strobe Signal Assignment
Sync frames are transmitted in the static segment only. Thus FID <= 1023.
Sync frames are transmitted in the static segment only. Thus FID <= 1023.
@ & SFIDAFMR.FMSK[9:0] == SFIDAFVR.FVAL[9:0] & SFIDAFMR.FMSK[9:0]
Strobe Signal Control Register (STBSCR)
FID 9:0
(STBSCR). To assign multiple strobe signals, the application must write
>
Table 3-11
(SFIDRFR). A received synchronization frame with the frame ID FID
@ != SFIDRFR.SYNFRID[9:0]
Equation 3-22
MFR4300 Data Sheet, Rev. 3
MCR.SFFE == 0
MCR.SFFE == 0
can be assigned to one of the four strobe ports using the
NOTE
NOTE
Module Configuration Register (MCR)
(SFIDAFMR). A received synchronization frame with
or
Equation 3-23
Equation 3-20
with appropriate settings.
Table
and the mask is configured in the
evaluates to true.
or
3-11.
Equation
FlexRay Module (FLEXRAYV2)
3-21evaluates to
is cleared, all
Sync
Eqn. 3-20
Eqn. 3-21
Eqn. 3-22
Eqn. 3-23
191