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TPIC1021 Datasheet(PDF) 4 Page - Texas Instruments

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Part # TPIC1021
Description  LIN Physical Interface
PDF  13 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPIC1021 Datasheet(HTML) 4 Page - Texas Instruments

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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
VSUP
VSUP/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
VSUP < VSUP_under
TXD: off
RXD: LOW
IHN: HIGH (high
side switched on)
Term: 30 kW
TXD: on
RXD: LIN bus data
IHN: HIGH (high
side switched on)
Term: 30 kW
TXD: off
RXD: floating
IHN: high
impedance (high
side switched off)
Term: highW
A: VSUP < VSUP_under
B: VSUP > VSUP_unde, EN = 0
C:VSUP > VSUP_unde, EN = 1
TPIC1021
LIN Physical Interface
SLIS113 – OCTOBER 2004
Figure 1. Operating States Diagram
4



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