ETAS
Technical Data
XETK-S21.0B
-
User
Guide
44
7.10
Pin Assignment
7.10.1
ECU Interface Connector CON6
7.10.2
Interface and Power Supply Connector CON7
Pin
Signal
Direction Comment
A1
/TRST
Out
JTAG signal
A2
TCK
Out
JTAG signal
A3
/EVTO
In
Debugger event signal (currently unused)
A4
TDI
Out
JTAG signal
A5
TDO
In
JTAG signal
A6
/WDGDIS
Out
Watchdog disable signal
B1
/EVTI
Out
Debugger event signal (currently unused)
B2
GND
Signal Ground
B3
TMS
Out
JTAG signal
B4
/PORST
BiDir
ECU Reset signal (open drain) for Reset
assertion and supervision
B5
VDDP
(Sense)
In
Sense for Switched power supply of ECU
(ignition)
B6
/ESR0
In
ECU Reset signal for supervision
Pin
Signal
Direction Comment
1
UBATT
In
Power supply (permanent)
2
CALWakeup Out
Wakeup functionality (12
V output)
1)
3
GND
-
Ground
4
VDDSBRAM Out
Backup voltage (1.25
V) of ECU standby RAM
provided by the XETK
2)
5
Reserved
-
N.C.
6
VDDS
-
BRAM_
-
SENSE
In
VDDSBRAM_SENSE, optional
3)
7
Reserved
-
N.C.
1)
if not implemented, do not connect
2)
XETK can be configured to monitor its supply of VDDSBRAM; voltage
is sensed on board XETK.
3)
XETK can be configured to monitor VDDSBRAM provided by
either ECU or XETK on this dedicated sense pin.
