Datasheet

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Functional Block Diagram
RXD
TXD
NWake
INH
EN
LIN
GND
Driver
Slope Control
Receiver
Filter
Filter
2
1
8
3
4
7
6
5
V
SUP
V
SUP
/2
Wake−Up
and
Vreg Control
Dominant
State
Timeout
Fault
Detection and
Protection
with
OPERATING STATES
Unpowered
System
Standby
Mode
Normal Mode
Low Power
Mode
A
C
A
B
EN = 1
EN = 1
EN = 0
A
LIN Bus Wake−UP
or
NWake Pin Wake−Up
V
SUP
< V
SUP_under
TXD: off
RXD: LOW
IHN: HIGH (high
side switched on)
Term: 30 k
TXD: on
RXD: LIN bus data
IHN: HIGH (high
side switched on)
Term: 30 k
TXD: off
RXD: floating
IHN: high
impedance (high
side switched off)
Term: high
A: V
SUP
< V
SUP_under
B: V
SUP
> V
SUP_unde
, EN = 0
C:V
SUP
> V
SUP_unde
, EN = 1
TPIC1021
LIN Physical Interface
SLIS113C – OCTOBER 2004 – REVISED JULY 2005
Figure 1. Operating States Diagram
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