MLX80001 Datasheet, PDF (14/28 Pages) Melexis Microelectronic Systems – 4-channel Master LIN Transceiver

MLX80001
4-channel Master LIN Transceiver
3.3 Mode 0 and Mode 1 pins respectively are used to select transceiver operating
modes:
The MLX80001 provides a weak internal pull down current on each of these pins. In case of open pins or
during the micro I/O initialisation procedure after power on or ECU wake up a stable passive behaviour of the
MLX80001 is given.
The MODE0/1 input thresholds are standard CMOS logic level for 3.3V and 5V supply voltages.
M0
M1 Mode
L
L
Sleep Mode
H
L
High Speed Mode (slew rate control disabled)
L
H Low speed mode
H
H Normal Mode
Mode 0 = 0, Mode 1 = 0 - Sleep mode.
Transceiver is in low power state, waiting for remote wake up via LIN or by mode changes to any state other
than 0,0. In this mode, the LINx pin is not in the dominant state regardless of the voltage at the TxDx pin.
As long as the MODE0/1 pin are logic 0, the transceiver returns to sleep mode after power on or remote
wake up after the specified time.
Mode 0 = 1, Mode 1 = 0. High Speed mode
This mode allows high speed data download up to 100Kbit/s. The slew rate control is disabled in this mode
all the six transmission channels. The falling edge is the active driven edge, the rising edge additional is
determined by the network time constant.
Mode 0 = 0, Mode 1 = 1. Transmit with reduced slew rate for low speed applications with
10.4kbps or below
This mode is the recommended operating mode for J2602 applications. The slew rate control of any channel
is optimized for minimum radiated noise, especially in the AM band.
Mode 0 = 1, Mode 1 = 1. Normal speed mode
Transmission bit rate in normal mode is up to 20kbps. The slew rate control of any channel is optimized for
maximum allowed bit rate in the LIN specification package 2.x.
MLX80001 – Datasheet
3901080001
Page 14 of 28
March 2007
Rev 001