Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
25
RX_OVERFLOW
_ERROR
RW1C
RW1S
0
HW sets this field to '1', when the RX data is
overwritten by HW before the SW reads from it. In
CXPI spec, this error is denoted as overrun error.
Note: Upon this error, SW should discard the RX data
in RX FIFO.
26
TX_OVERFLOW_ERROR RW1C
RW1S
0
HW sets this field to '1', when the TX data is
overwritten by SW before the HW reads from it to
transmit to CXPI bus.
Note: The ongoing message transfer will continue
when this error happens however, data transferred at
CXPI bus will be bogus and HW will invert the CRC to
invalidate the message at the receiving node.
TX_HEADER and TX_RESPONSE commands are set
to '0'.
27
RX_UNDERFLOW
_ERROR
RW1C
RW1S
0
HW sets this field to '1', when RX FIFO is empty and
SW reads from it.
Note: Upon this error, SW should discard the RX data
in RX FIFO.
28
TX_UNDERFLOW
_ERROR
RW1C
RW1S
0
HW sets this field to '1', when TX FIFO is empty and
HW reads from it.
Note: The ongoing message transfer will continue
when this error happens however, data transferred at
CXPI will be bogus and HW will invert the CRC to
invalidate the message at the receiving node.
TX_HEADER and TX_RESPONSE commands are set
to '0'.
29
RX_FRAME_ERROR
RW1C
RW1S
0
HW sets this field to '1', when the stop bit of a byte
frame is incorrect.
Note: The ongoing message transfer is aborted
(INTR.RX_RESPONSE_DONE is NOT activated and
the INTR.RX_HEADER_DONE/TX_HEADER_DONE
is NOT activated if the frame error occurs during
header byte or if frame error occurs during response
byte (if the HEADER and RESPONSE commands are
set together)).
30
TX_FRAME_ERROR
RW1C
RW1S
0
HW sets this field to '1', when the stop bit of a byte
frame is incorrect.
This error would be a subset of TX_BIT_ERROR and
also subjected to BIT_ERROR_IGNORE field.
Note: The ongoing message transfer is aborted
(INTR.TX_HEADER_DONE/RX_HEADER_DONE and
INTR.TX_RESPONSE_DONE are NOT activated) and
the TX_HEADER and TX_RESPONSE commands are
set to '0'.
Note: When CTL0.BIT_ERROR_IGNORE is '0', the
ongoing message transfer is aborted
(INTR.TX_HEADER_DONE and
INTR.TX_RESPONSE_DONE is NOT activated) and
the TX_HEADER and TX_RESPONSE commands are
set to '0'. When CTL0.BIT_ERROR_IGNORE is '1', the
ongoing message transfer would be transferred.
793
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers