ETAS
Technical Data
ETK-T2.2 User Guide
37
7.6
Serial ETK Interface
7.7
Microcontroller Bus Interface
7.8
Testcharacteristics
Item
Characteristics
Transmission speed
100
Mbit/s
Cable length
max. 30
m / 100
ft
Serial Interface
DC decoupling
Parameter
Symbol Condition
Min Typ
Max Unit
ECU
Supply Voltage -
Power Detect
V
DD
ECU
on
0.92 1.02 1.12 V
ECU
off
0.84 0.94 1.04 V
max. load
I
DD
0.1
mA
max. load V
DDEBU
I
DDEBU
2
mA
Parameter
Symbol Condition
Min
Max Unit
Reset delay 1
t
Reset1
U
Batt
=12
V
U
SG
= 0
V
> 3.3
V
without transferring
Flash
29
40
ms
Reset delay 2
t
Reset2
U
Batt
=12
V
U
SG
= 0
V
3.3
V
with transferring Flash
79
100
ms
Reset delay 3
t
Reset3
U
Batt1
=0
V
12
V
transfer FPGA and
Flash
310
350
ms
NOTE
t
Reset1
: Delay of ECU reset through ETK without transferring the Flash
(U
Batt1
present, USG will be switched on)
t
Reset2
: Delay of ECU reset through ETK with transferring the Flash
(U
Batt1
present, transfer active, USG will be switched on)
t
Reset3
: max. delay of ECU reset through ETK
(U
Batt1
and USG will be switched on)