MC33912G5AC Freescale, MC33912G5AC Datasheet - Page 42

• Manufacturer Part Number: MC33912G5AC
• Manufacturer: Freescale

Specifications of MC33912G5AC

• Turn Off Delay Time: 10us
• Number Of Drivers: 4
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• 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 (over-temp, 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 17. LIN Slew Rate Control
42
Table 16. LIN Control Register - $4
33912
FUNCTIONAL DEVICE OPERATIONS
LOGIC COMMANDS AND REGISTERS
Condition
LSR1
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
0
0
1
1
LSR0
DIS_J2602
0
1
0
1
POR
C3
0
Table
.
mode, ext_reset
Normal Slew Rate (up to 20 kb/s)
or LIN failure
Fast Slew Rate (up to 100 kb/s)
POR, Reset
Slow Slew Rate (up to 10 kb/s)
RXONLY
gone*
C2
0
Description
Reserved
LSR1
C1
0
POR
LSR0
C0
0
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 8µs 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.
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
Read
RXSHORT
S3
Analog Integrated Circuit Device Data
TXDOM
S2
Freescale Semiconductor
LINOT
S1
S0
0