This debug adapter is used to connect the iC5000 and the iC5700 BlueBox to Freescale
MPC5xxx or ST SPC5 based target. It’s used to connect to the embedded target featuring a 38-
pin Mictor target debug connector with the MPC5xxx Nexus pinout.
The debug adapter connects to the BlueBox through the two ribbon cables and to the target
debug connector on the other side. Refer to the BlueBox User Manual for more details on
connecting the debug adapter.
The debug adapter under the IC50152 ordering code features a standard ribbon cable length,
which is cca. 24 cm. A debug adapter with shorter cable length (12 cm) has been introduced
(ordering code IC50152-12) for situations when standard length doesn’t work e.g. due to a
badly designed target board layout where reliable Nexus trace capture with the standard 24 cm
ribbon cable cannot be achieved. In such situations shorter cable usually helps.
Jumper J2 (EVTIN)
Under some circumstances it can happen that the debugger cannot find any absolute program
counter message in the analyzed Nexus trace stream. Consequentially, the program trace
reconstruction fails and errors or nothing gets displayed in the trace window. To avoid such
situations, the BlueBox can feed periodic signal to the EVTIN CPU pin connecting to the on-chip
Nexus trace engine, which then periodically generates and broadcasts program counter
synchronization messages.
In order to use this feature, the jumper J2 must be bridged and the ‘Force periodic Nexus SYNC’
option in the ‘Hardware/emulation Options/CPU Setup/Nexus’ tab must be checked in
winIDEA
TM
. Refer to iSYSTEM ‘Freescale MPC5xxx & ST SPC56 Family On-Chip Emulation’
technical notes document for more details on the ‘Force periodic Nexus SYNC’ option use.
Note that the EVTI (Nexus Event In) CPU pin may be shared with other CPU functionalities. For
instance, on the MPC5516 the same pin can operate as the GPIO, the EBI read/write or the
EVTI. Whenever the CPU pin is configured and used for the EVTI alternate operation, the J2
must not be populated in order to prevent electrical conflicts.
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