MC33910BACR2 Freescale, MC33910BACR2 Datasheet - Page 41

• Manufacturer Part Number: MC33910BACR2
• Manufacturer: Freescale

Specifications of MC33910BACR2

• Lead Free Status / RoHS Status: Compliant

LIN Control Register - LINCR
Writing the LIN Control Register (LINCR) returns the LIN
Status Register (LINSR).
* LIN failure gone: if LIN failure (overtemp, TXD/RXD short) was set,
the flag resets automatically when the failure is gone.
J2602 - LIN Dominant Voltage Select
circuitry is enabled (bit sets to 0), the TXD-LIN-RXD
communication works down to the battery under-voltage
condition is detected. Below, the bus is in recessive state. If
the circuitry is disabled (bit sets to 1), the communication
TXD-LIN-RXD works down to 4.6 V (typical value).
RXONLY - LIN Receiver Operation Only
transmitter.
the LIN transmitter. In case of a LIN error condition, this bit is
automatically set.
functionality, and the RXD pin will reflect the state of the LIN
bus.
up disabled (Stop mode).
LSRx - LIN Slew-Rate
accordance with
Table 16. LIN Control Register - $4
Analog Integrated Circuit Device Data
Freescale Semiconductor
Condition
This register controls the LIN physical interface block.
This write-only bit controls the J2602 circuitry. If the
0 = Enabled J2602 feature.
1 = Disabled J2602 feature.
This write-only bit controls the behavior of the LIN
In Normal mode, the activation of the RXONLY bit disables
In Stop mode this bit disables the LIN wake-up
1 = only LIN receiver active (Normal mode) or LIN wake-
0 = LIN fully enabled.
This write-only bit controls the LIN driver slew-rate in
Reset
Value
Reset
Write
DIS_J2602
POR
C3
0
Table
18.
mode, ext_reset
or LIN failure
POR, Reset
RXONLY
gone*
C2
0
LSR1
C1
0
POR
LSR0
C0
0
Table 17. LIN Slew Rate Control
LIN Status Register - LINSR
interface block and is also returned when writing to the
LINCR.
RXSHORT - RXD Pin Short-circuit
RXD pin (shorted either to 5.0 V or to Ground). The short-
circuit delay must be a worst case of 8.0 µs to be detected
and to shut down the driver. To clear this bit, it must be read
after the condition is gone (transition detected on RXD pin).
The LIN driver is automatically re-enabled once the condition
is gone and TXD is high.
TXDOM - TXD Permanent Dominant
at dominant (Ground) condition and the resultant shutdown in
the LIN transmitter. This condition is detected after the TXD
pin remains in dominant state for more than 1 second (typical
value).
The LIN driver is automatically re-enabled once TXD goes
High.
LINOT - LIN Driver Over-temperature
shutdown due to over-temperature. The transmitter is
automatically re-enabled after the over-temperature
condition is gone and TXD is high. The LINOT bit is cleared
after SPI read once the condition is gone.
LSR1
This register returns the status of the LIN physical
This read-only bit indicates a short-circuit condition on the
1 = RXD short-circuit condition.
0 = None.
This read-only bit signals the detection of a TXD pin stuck
To clear this bit, it must be read after TXD has gone high.
1 = TXD stuck at dominant fault detected.
0 = None.
This read-only bit signals that the LIN transceiver was
1 = LIN over-temperature shutdown
0 = None
Table 18. LIN Status Register - $4/$5
0
0
1
1
Read
LSR0
0
1
0
1
RXSHORT
S3
LOGIC COMMANDS AND REGISTERS
FUNCTIONAL DEVICE OPERATIONS
Normal Slew Rate (up to 20 kb/s)
Fast Slew Rate (up to 100 kb/s)
Slow Slew Rate (up to 10 kb/s)
TXDOM
S2
Description
Reserved
LINOT
S1
S0
0
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