Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
7
BLOCKED
RW1C
RW1S
0
SW cannot get access to the EZ memory (EZ_DATA
accesses), due to an externally clocked EZ access.
This may happen when STATUS.EC_BUSY is '1'.
8
FRAME_ERROR
RW1C
RW1S
0
Frame error in received data frame. Set to '1', when
event is detected. Write with '1' to clear bit. This can be
either a start or stop bit(s) error:
Start bit error: after the detection of the beginning of a
start bit period (RX line changes from '1' to '0'), the
middle of the start bit period is sampled erroneously
(RX line is '1'). Note: a start bit error is detected
BEFORE a data frame is received.
Stop bit error: the RX line is sampled as '0', but a '1'
was expected. Note: a stop bit error may result in
failure to receive successive data frame(s). Note: a
stop bit error is detected AFTER a data frame is
received.
A stop bit error is detected after a data frame is
received, and the
UART_RX_CTL.DROP_ON_FRAME_ERROR field
specifies whether the received frame is dropped or
send to the RX FIFO. If
UART_RX_CTL.DROP_ON_FRAME_ERROR is '1',
the received data frame is dropped. If
UART_RX_CTL.DROP_ON_FRAME_ERROR is '0',
the received data frame is send to the RX FIFO. Note
that Firmware can only identify the erroneous data
frame in the RX FIFO if it is fast enough to read the
data frame before the hardware writes a next data
frame into the RX FIFO; i.e. the RX FIFO does not
have error flags to tag erroneous data frames.
9
PARITY_ERROR
RW1C
RW1S
0
Parity error in received data frame. Set to '1', when
event is detected. Write with '1' to clear bit. If
UART_RX_CTL.DROP_ON_PARITY_ERROR is '1',
the received frame is dropped. If
UART_RX_CTL.DROP_ON_PARITY_ERROR is '0',
the received frame is send to the RX FIFO. In
SmartCard submode, negatively acknowledged data
frames generate a parity error. Note that Firmware can
only identify the erroneous data frame in the RX FIFO
if it is fast enough to read the data frame before the
hardware writes a next data frame into the RX FIFO.
10
BAUD_DETECT
RW1C
RW1S
0
LIN baudrate detection is completed. The receiver
software uses the
UART_RX_STATUS.BR_COUNTER value to set the
right IP clock (from the programmable clock IP) to
guarantee successful receipt of the first LIN data frame
(Protected Identifier Field) after the synchronization
byte. Set to '1', when event is detected. Write with '1' to
clear bit.
11
BREAK_DETECT
RW1C
RW1S
0
Break detection is successful: the line is '0' for
UART_RX_CTRL.BREAK 1 bit period. Can
occur at any time to address unanticipated break
fields; i.e. 'break-in-data' is supported. This feature is
supported for the UART standard and LIN submodes.
For the UART standard submodes, ongoing receipt of
data frames is NOT affected; i.e. Firmware is expected
to take the proper action. For the LIN submode,
possible ongoing receipt of a data frame is stopped
and the (partially) received data frame is dropped and
baud rate detection is started. Set to '1', when event is
detected. Write with '1' to clear bit.
1451
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers