mm908e622 Freescale Semiconductor, Inc, mm908e622 Datasheet - Page 31

• Manufacturer Part Number: mm908e622
• Description: Mm908e622 Integrated Quad Half-bridge, Triple High-side And Ec Glass Driver With Embedded Mcu And Lin For High End Mirror
• Manufacturer: Freescale Semiconductor, Inc

LIN bus short to Ground or LIN bus leakage during low power
mode the internal pull-up resistor on the LIN terminal is
disconnected from VSUP and a small current source keeps
TXD Terminal
of the LIN transmitter (see
LOW, the LIN terminal is low (dominant state). When TXD is
HIGH, the LIN output MOSFET is turned off (recessive state).
The TXD terminal has an internal pullup current source in
order to set the LIN bus to recessive state in the event, for
instance, the microcontroller could not control it during
system power-up or power-down.
RXD Terminal
reports the state of the LIN bus voltage. LIN HIGH (recessive
state) is reported by a high level on RXD, LIN LOW (dominant
state) by a low level on RXD.
STOP Mode and Wake-up Feature
physical layer is disabled and the internal pull-up resistor is
disconnected from VSUP and a small current source keeps
Analog Integrated Circuit Device Data
Freescale Semiconductor
For improved performance and safe behavior in case of
The TXD terminal is the MCU interface to control the state
The RXD transceiver terminal is the MCU interface, which
During STOP mode operation the transmitter of the
RXD
TXD
WakeUp
LINCL
LINIF
Figure
TESTMODE
2, page 2). When TXD is
MODE
PSON
Control
WakeUp
Figure 16. LIN Interface
Filter
SRS[1:0]
Control
Slope
the LIN bus at recessive level. In case of a LIN bus short to
GND, this feature will reduce the current consumption in
STOP and SLEEP modes.
the LIN terminal in recessive state. The receiver is still active
and able to detect wake-up events on the LIN bus line.
Mask register is set), a dominant level longer than T
followed by an rising edge will set the LINIF flag and generate
an interrupt which causes a system wake-up (see
page 19)
SLEEP Mode and Wake-up Feature
physical layer is disabled and the internal pull-up resistor is
disconnected from VSUP and a small current source keeps
the LIN terminal in recessive state. The receiver is still active
to be able to detect wake-up events on the LIN bus line.
edge will generate a system wake-up (reset) and set the
LINWF flag in the Reset Status register (RSR). Also see
Figure
If the LIN interrupt is enabled (LINIE bit in the Interrupt
During SLEEP mode operation the transmitter of the
A dominant level longer than T
9, page 19).
VSUP
GND
30k
propWL
10µA
Functional Device Operation
followed by an rising
LIN bus
Operational Modes
Figure
propWL
908E622
8,
31