2
TABLE OF CONTENTS
1. INTRODUCTION .........................................................................................................................................................4
1.1 S
PECIFICATIONS
..............................................................................................................................................................5
1.2 D
EFINITIONS
...................................................................................................................................................................5
2. CONNECTING & USING ............................................................................................................................................6
2.1 S
ETTING THE
B
AUD
R
ATE
...............................................................................................................................................6
2.2 C
ONNECTIONS
................................................................................................................................................................7
2.3 RS-232
OR
RS-422 ........................................................................................................................................................7
2.4 C
OMMUNICATIONS WITH THE
H
OST
C
OMPUTER
.............................................................................................................7
3. INTERFACE HARDWARE.........................................................................................................................................8
3.1 I
NTRODUCTION
...............................................................................................................................................................8
3.2 O
VERVIEW
.....................................................................................................................................................................8
3.3 M
ICROCONTROLLER
.......................................................................................................................................................8
3.4 FLASH ..........................................................................................................................................................................9
3.5 RAM ..............................................................................................................................................................................9
3.6 FIFO’
S
...........................................................................................................................................................................9
3.7 SCC ...............................................................................................................................................................................9
3.8 CAN...............................................................................................................................................................................9
3.9 J1850 VPW .................................................................................................................................................................10
3.10 J1850 PWM...............................................................................................................................................................10
3.11 KWP 2000 .................................................................................................................................................................10
3.12 UBP ...........................................................................................................................................................................10
3.13 LIN ............................................................................................................................................................................10
3.14 M
ICROSECOND
C
LOCK
...............................................................................................................................................12
4. AVT-718 OPERATION ..............................................................................................................................................12
4.1 I
NDICATORS
..................................................................................................................................................................12
4.2 RS-232.........................................................................................................................................................................12
4.3 RS-422.........................................................................................................................................................................13
4.4 V
EHICLE
N
ETWORKS
....................................................................................................................................................13
5. COMMUNICATIONS ................................................................................................................................................13
5.1.1 Packet Construction .............................................................................................................................................13
5.1.2 Transmit message format .....................................................................................................................................14
5.1.2.1 Transmit Acknowledgment ............................................................................................................................................. 14
5.1.3 Transmit Message Status Byte Definitions ...........................................................................................................15
5.1.3.1 Transmit message example .............................................................................................................................................. 15
5.1.4 Receive message format .......................................................................................................................................15
5.1.4.1 Received message time stamping .................................................................................................................................... 15
5.1.4.2 Received message example ............................................................................................................................................. 16
5.1.5 Received Message Status Byte Definitions ...........................................................................................................16
5.1.6 More Examples ....................................................................................................................................................16
5.1.7 Alternate Header Formats ...................................................................................................................................17
5.2 VPW M
ODE
.................................................................................................................................................................18
5.3 PWM M
ODE
................................................................................................................................................................18
5.3.1 PWM Active Node ................................................................................................................................................18
5.3.2 PWM Passive Network Monitor ...........................................................................................................................18
5.3.3 PWM “Look Alike” ..............................................................................................................................................19
5.4 KWP M
ODE
.................................................................................................................................................................19
5.5 CAN M
ODE
..................................................................................................................................................................20
5.6 UBP M
ODE
..................................................................................................................................................................20
5.7 M
ATCH
F
UNCTION
- M
ESSAGE
F
ILTERING
....................................................................................................................20
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