Qorivva MPC5xxx/SPC5xx Debugger and NEXUS Trace
79
©1989-2021 Lauterbach GmbH
SYStem.CONFIG
Configure debugger according to target topology
The four parameters IRPRE, IRPOST, DRPRE, DRPOST are required to inform the debugger about the
TAP controller position in the JTAG chain, if there is more than one processor in the JTAG chain. The
information is required before the debugger can be activated e.g. by a
. See example below.
TriState has to be used if (and only if) more than one debugger are connected to the common JTAG port at
the same time. TAPState and TCKLevel define the TAP state and TCK level which is selected when the
debugger switches to tristate mode.
Format:
SYStem.CONFIG
<parameter>
<number_or_address>
SYStem.MultiCore
<parameter> <number_or_address>
(deprecated)
<
parameter
>
(DebugPort):
CORE
<core_index>
<chip_index>
DEBUGPORT DebugCable0
|
Analyzer0
|
XCP0
Slave
ON
|
OFF
TriState
ON
|
OFF
<
parameter
>
(JTAG):
DRPRE
<bitcount>
DRPOST
<bitcount>
IRPRE
<bitcount>
IRPOST
<bitcount>
TAPState 7
|
12
TCKLevel
0
|
1
CJTAGFLAGS
<flags>
CJTAGTCA
<tca>
NOTE:
When using the TriState mode, nTRST/JCOMP must have a pull-up resistor on the
target. In TriState mode, a pull-down is recommended for TCK, but targets with pull-
up are also supported.