mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 92

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

FlexRay Module (FLEXRAYV2)
3.3.2.22
This register provides aggregated channel status information as an accrued status of channel activity for
all communication slots, regardless of whether they are assigned for transmission or subscribed for
reception. It provides accrued information for the symbol window, the NIT, and the wakeup status. The
application can clear any flag at any time by writing a '1' to it. Writing a ‘0’ will not change the flag state.
If the application tries to clear a flag while the FlexRay module sets the flag at the same time, then that
flag is not cleared.
92
0x002E
Reset
CLKCORR-
FAILCNT
W
STCA
SBVA
SSEA
Field
R
MTA
3–0
7
6
5
4
15
0
0
Symbol Window Transmit Conflict on Channel A — protocol related variable:
window on channel A
This status bit is set if there was a transmission conflicts during the symbol window on channel A.
0 No such event
1 Transmission conflict detected
Symbol Window Boundary Violation on Channel A — protocol related variable:
window on channel A
This status bit is set if there was some media activity on the FlexRay bus channel A at the start or at the end of
the symbol window.
0 No such event
1 Media activity at boundaries detected
Symbol Window Syntax Error on Channel A — protocol related variable:
on channel A
This status bit is set when a syntax error was detected during the symbol window on channel A.
0 No such event
1 Syntax error detected
Media Access Test Symbol MTS Received on Channel A — protocol related variable:
symbol window on channel A
This status bit is set if the Media Access Test Symbol MTS was received in the symbol window on channel A.
1 MTS symbol received
0 No such event
Clock Correction Failed Counter — protocol related variable:
This field provides the number of consecutive even/odd communication cycle pairs that have passed without
clock synchronization having performed an offset or a rate correction due to lack of synchronization frames. It is
not incremented when it has reached the configured value of either max_without_clock_correction_fatal or
max_without_clock_correction_passive as defined in the
FlexRay module resets this counter on a hard reset condition, when the protocol enters the
state, or when both the rate and offset correction terms have been calculated successfully.
Protocol Status Register 3 (PSR3)
14
0
0
WUB ABVB AACB ACEB ASEB AVFB
13
0
12
0
Table 3-27. PSR2 Field Descriptions (Sheet 2 of 2)
Figure 3-21. Protocol Status Register 3 (PSR3)
11
0
Additional Reset: RUN Command
10
0
MFR4300 Data Sheet, Rev. 3
0
9
0
8
Description
0
0
7
Protocol Configuration Register 8
6
0
0
vClockCorrectionFailed
WUA ABVA AACA ACEA ASEA AVFA
0
5
vSS!SyntaxError
0
4
vSS!TxConflict
vSS!BViolation
0
3
Freescale Semiconductor
vSS!ValidMTS
Write: Normal Mode
POC:normal active
(PCR8). The
for symbol window
0
2
for symbol
for symbol
1
0
for
0
0