14-pin 2.54mm JTAG Converter
Ordering code
IASAM34MPCPIN14
If your target features 14-pin 2.54mm pitch JTAG target debug connector, use iSYSTEM 14-pin
2.54 mm JTAG Adapter which acts as a pinout converter. The adapter must be ordered
separately. The adapter can be used only in conjunction with the iC6000 DTM Aurora/JTAG
module (IC60022-1).
The following pinout is valid on the target side:
Signal
Direction
Signal
Description
Signal
Pin
Pin
Signal
Signal
Description
Signal
Direction
O
JTAG
TDI
1
2
GND
Ground
I
JTAG
TDO
3
4
GND
Ground
O
JTAG
TCK
5
6
GND
Ground
O (not used)
Nexus Event
Input
EVTI(EVTI0)
7
8
nPORST
Power On
Reset
O
IO
Reset
nRESET
9
10
TMS
JTAG
O
I
Reference
Voltage
Vref
11
12
GND
Ground
Not Connected
NC
13
14
nJCOMP
JTAG TRST
(optional)
O
14-pin 2.54mm MPC5xxx/SPC5 pinout
Mandatory pins on the microcontroller side are GND, VDD, RESET, TMS, TDI, TDO and TCK.
The JCOMP is an optional pin. Some microcontrollers don’t have this pin. Internally, this is
actually the JTAG TRST which resets the JTAG TAP state machine. Because the JTAG TAP
state machine can be reset also by the TMS and the TCK, this pin is optional also for the
debugger. If the microcontroller has the JCOMP pin but it is not connected to the target debug
connector, it must be set to the non-active state in the target via a pull-up resistor. If not then
the JTAG TAP state machine remains in reset and debugging is not possible.
