XETK-V1.0 - User’s Guide
23
ETAS
Hardware Description
value to the trigger address at the so called trigger segment. The software of the
ECU is able to start different data acquisition tasks by writing different trigger
addresses (trigger 1 to trigger 48).
Fig. 4-9
Division of the 128 Byte Trigger Segment
The XETK-V1.0 contains a trigger comparator which can be configured to select
a segment of 128 Byte out of the measurement data memory address space (at
a 128 Byte limit). This limit is known as the trigger segment address. Fig. 4-9
"Division of the 128 Byte Trigger Segment" shows the configuration of the
128 Byte trigger segment.
The XETK-V1.0 provides an extended trigger segment with up to 48 direct 16-bit
hardware triggers.
For ECU setup and debugging purposes, the XETK-V1.0 can be disabled by writ-
ing an arbitrary value to the approriate address (XETK_Disable) in the trigger seg-
ment. When disabled, write accesses to the ETK data emulation and
Note
The unused address areas within the trigger segment are reserved for future
applications and must not be used for other purposes.
Trigger 16
Trigger 15
Trigger 14
00h
3Ah
3Ch
3Eh
RESERVED
Trigger 3
Trigger 4
Trigger 1
Trigger 2
24h
22h
20h
26h
08h
RESERVED
XETK_Enable
XETK_Disable
02h
Trigger 17
40h
Trigger 18
42h
Trigger 31
5Ch
Trigger 32
5Eh
80h
60h
Trigger 48