Texas Instruments TMS570LC4357

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1341
SPNU563A–March 2018
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FlexRay Module
26.3.2.2 Interrupt Registers
26.3.2.2.1 Error Interrupt Register (EIR)
The flags are set when the communication controller detects one of the listed error conditions. They
remain set until the host clears them. A flag is cleared by writing a 1 to the corresponding bit position.
Writing a 0 has no effect on the flag. A reset will also clear the register.
Figure 26-117 and Table 26-96 illustrate this register.
Figure 26-117. Error Interrupt Register (EIR) [offset_CC = 20h]
31 27 26 25 24 23 19 18 17 16
Reserved TABB LTVB EDB Reserved TABA LTVA EDA
R-0 R/W-0 R/W-0 R/W-0 R-0 R/W-0 R/W-0 R/W-0
15 12 11 10 9 8 7 6 5 4 3 2 1 0
Reserved MHF IOBA IIBA EFA RFO PERR CCL CCF SFO SFBM CNA PEMC
R-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 26-96. Error Interrupt Register (EIR) Field Descriptions
Bit Field Value Description
31-27 Reserved 0 Reads return 0. Writes have no effect.
26 TABB Transmission Across Boundary Channel B. The flag signals to the Host that a transmission across
a slot boundary occurred for channel B.
0 No transmission across slot boundary is detected on channel B.
1 Transmission across slot boundary is detected on channel B.
25 LTVB Latest transmit violation channel B. The flag signals a latest transmit violation on channel B to the
host.
0 No latest transmit violation is detected on channel B.
1 Latest transmit violation is detected on channel B.
24 EDB Error detected on channel B. This bit is set whenever one of the flags SEDB, CEDB, CIB, SBVB in
the Aggregated channel status register is set.
0 No error is detected on channel B.
1 Error is detected on channel B.
23-19 Reserved 0 Reads return 0. Writes have no effect.
18 TABA Transmission Across Boundary Channel A. The flag signals to the Host that a transmission across
a slot boundary occurred for channel A.
0 No transmission across slot boundary is detected on channel A.
1 Transmission across slot boundary is detected on channel A.
17 LTVA Latest transmit violation channel A. The flag signals a latest transmit violation on channel A to the
host.
0 No latest transmit violation is detected on channel A.
1 Latest transmit violation is detected on channel A.
16 EDA Error detected on channel A. This bit is set whenever one of the flags SEDA, CEDA, CIA, SBVA in
the Aggregated channel status register is set.
0 No error is detected on channel A.
1 Error is detected on channel A.
15-12 Reserved 0 Reads return 0. Writes have no effect.
11 MHF Message Handler Constraints Flag. The flag signals a Message Handler constraints violation
condition. It is set whenever one of the flags MHDF.SNUA, MHDF.SNUB, MHDF.FNFA,
MHDF.FNFB, MHDF.TBFA, MHDF.TBFB, MHDF.WAHP changes from 0 to 1.
0 No Message Handler failure is detected.
1 Message Handler failure is detected.