![ETAS FETK-T3.0 Скачать руководство пользователя страница 27](http://html.mh-extra.com/html/etas/fetk-t3-0/fetk-t3-0_user-manual_2431239027.webp)
ETAS
Hardware Description
FETK-T3.0 - User’s Guide
27
4.9
JTAG and Aurora Interface
Fig. 4-7
Equivalent Circuitry of the ECU JTAG & Aurora Interface (ECU)
The ECU part of the JTAG and Aurora FETK interface is depicted in Fig. 4-7.
4.9.1
Interface Recommendations
The use of both JTAG and Aurora requires the ECU or Mezzanine board to use
a 34 pin Samtec connector for interfacing to the FETK-T3.0.
The FETK-T3.0 incorporates 22 Ohm series resistors for the TMS, TCK, TDI and
/TRST lines on the ECU interface. Hence, no additional termination resistors
are required on the ECU for these signals.
It is recommended to use 1nF capacitors on the ECU PCB or Mezzanine board
for the /- signals.
FETK-T3.0
ETAN2/8
ETAM2/ 5/9
or
ETV5
TMS
TCK
/RES_IN
VDDPSTBY
(ECU
interface)
GND
VDDSTBY
(ERAM)
CAL
Wakeup
RH850
TDO
TX0_N
TX1_P
VDD(Sense)
TMS
TCK
TX0_P
GND
TDO
TDI
TX1_N
TDI
/RES_OUT
1
2
EM
U
V
D
D
/TRST
/DRDY
1.
XETK:
supply
and
monitor
the
voltage
of
the
ERAM
R
XE
T
K
=
0
R
EC
U
=
0
2.
ECU:
supply
the
voltage
of
the
E RAM
OR
Permanent
Power
supply
(External
supply
of
UBATT,
if
not
available
internal))
UBATT1
Power
supply
of
the
ERAM:
Option
1:
provided
by
XETK
Option
2:
provided
by
ECU
ECU
/TRST
GND
MD0
UBATT2
6
Notes:
‐
ETAM9
does
not
provide
pin
6
‐
ETV5
only
provides
power
and
ground
connections
‐
ECU
connection
is
5
pin
Molex
or
solder
points
Permanent
Power
supply
(Internal
UBATT,
else
internal
ignition )
1
TX2_N
TX3_P
FLMD0
EVTO
TX2_P
GND
/PORST
TX3_N
GND
GND
WDGDIS
AURORA_RST
Clock_P
GND
Clock_N
GND
/RSTOUT
RDY
VSTBY
19
20
09
10
30
29
34
33
>=
10
0k
If
a
pull
down
is
present,
it
must
be
>=
100k
AURCLK
‐
AUR0+
AUR 0
‐
VDD
VDD
VDD
1nF
1nF
AUR1+
AUR 1
‐
AUR2+
AUR 2
‐
AUR3+
AUR 3
‐