STMicroelectronics SPC572L series Reference Manual page 1019

RM0400
Table 538. Interrupt register field descriptions(Continued)
Field
Warning Status
7
0 Error_Warning status unchanged
EW
1 Error_Warning status changed
Error Passive
8
0 Error_Passive status unchanged
EP
1 Error_Passive status changed
Error Logging Overflow
9
0 CAN Error Logging Counter did not overflow
ELO
1 Overflow of CAN Error Logging Counter occurred
Bit Error Uncorrected
Message RAM bit error detected, uncorrected. Controlled by Message RAM bit error input signal
generated by an optional external parity / ECC logic attached to the Message RAM. An uncorrected
10
Message RAM bit error sets CCCR[INIT] to '1'. This is done to avoid transmission of corrupted
BEU
data.
0 No bit error detected when reading from Message RAM
1 Bit error detected, uncorrected (e.g. parity logic)
Bit Error Corrected
Message RAM bit error detected and corrected. Controlled by Message RAM bit error input signal
11
generated by an optional external parity / ECC logic attached to the Message RAM.
BEC
0 No bit error detected when reading from Message RAM
1 Bit error detected and corrected (e.g. ECC)
Message stored to Dedicated Rx Buffer
12
The flag is set whenever a received message has been stored into a dedicated Rx Buffer.
DRX
0 No Rx Buffer updated
1 At least one received message stored into a Rx Buff er
Timeout Occurred
13
0 No timeout
TOO
1 Timeout reached
Unprocessed Message Discarded
When a new message is received while the acceptance filtering process for the previously received
14
message has not yet completed, this message is discarded.
UMD
0 No unprocessed message discarded
1 Unprocessed message discarded
Timestamp Wraparound
15
0 No timestamp counter wrap-around
TSW
1 Timestamp counter wrapped around
Tx Event FIFO Event Lost
16
0 No Tx Event FIFO element lost
TEFL
1 Tx Event FIFO element lost, also set after write attempt to Tx Event FIFO of size zero
17
Tx Event FIFO Full
TEFF
Tx Event FIFO Watermark Reached
18
0 Tx Event FIFO fill level below watermark
TEFW
1 Tx Event FIFO fill level reached watermark
Description
DocID027809 Rev 4
CAN Subsystem
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