MC33910 Freescale Semiconductor, MC33910 Datasheet - Page 29

• Manufacturer Part Number: MC33910
• Description: LIN System Basis Chip
• Manufacturer: Freescale Semiconductor

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LIN PHYSICAL LAYER
communication in automotive applications. The LIN physical
layer is designed to meet the LIN physical layer specification
and has the following features:
Slew Rate Selection
10.4 and 20kBit/s as well as a fast baud rate for test and
programming. The slew rate can be adapted with the bits
LSR1:0 in the LIN control register (LINCR). The initial slew
rate is optimized for 20kBit/s.
LIN Pull-up Disable In Stop and Sleep Mode
LIN bus short to ground or LIN bus leakage during Low Power
Analog Integrated Circuit Device Data
Freescale Semiconductor
The LIN bus pin provides a physical layer for single-wire
• LIN physical layer 2.0 compliant
• Slew rate selection
• Over-current shutdown
• Over-temperature shutdown
• LIN pull-up disable in Stop and Sleep Modes
• Advanced diagnostics
The slew rate can be selected for optimized operation at
To improve performance and for safe behavior in case of
RXSHORT
RXONLY
MOD1:2
TXDOM
LSR0:1
RXD
LINOT
LINOC
TXD
LINPE
LDVS
Over-temperature Shutdown (interrupt maskable)
Over-current Shutdown (interrupt maskable)
High-voltage
Shutdown
WAKE-UP
Slope and Slew Rate Control
FILTER
Figure 18. LIN Interface
LIN – DRIVER
INTERRUPT
CONTROL
MODULE
High Side
Interrupt
SLOPE
CONTROL
and thermal shutdown. An internal pull-up resistor with a
serial diode structure is integrated, so no external pull-up
components are required for the application in a Slave Mode.
The fall time from dominant to recessive and the rise time
from recessive to dominant is controlled. The symmetry
between both slopes is guaranteed.
LIN Pin
external disturbance, guaranteeing communication.
Mode the internal pull-up resistor on the LIN pin can be
disconnected by clearing the LINPE bit in the MCR. The bit
LINPE also changes the bus wake-up threshold (
the current consumption in Stop and Sleep modes.
Over-Current Shutdown (LIN Interrupt)
conditions. In case of an over-current condition (e.g. LIN bus
RECEIVER
• LIN dominant voltage level selection
The LIN driver is a low side MOSFET with over-current
The LIN pin offers a high susceptibility immunity level from
In case of a LIN bus short to GND, this feature will reduce
The output low side FET is protected against over-current
LIN
Wake-up
WAKE-UP
MODULE
LGND
VS1
FUNCTIONAL DEVICE OPERATIONS
30K
OPERATIONAL MODES
LIN
V
BUSWU
33910
).
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