AFE1_AFE2-1:1
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Technical specifications
IAR Debug Probes User Guide
I-jet®, I-jet Trace, and I-scope™
INDICATORS
I-jet has three LED indicators on the top, marked TPWR, DBG, and USB. The
following indicators and their statuses are described in detail:
● The TPWR indicator (Target power)
● The DBG indicator (JTAG/SWD)
● The USB indicator
The TPWR indicator (Target power)
The DBG indicator (JTAG/SWD)
8 TDI/NC Output JTAG data input of target CPU. It is recommended that this
pin is pulled to a defined state on the target board. Typically
connected to TDI of the target CPU. For CPUs that do not
provide TDI (SWD-only devices), this pin is not used
(tri-stated).
9 GND GND GND and target detect presence.
10 nRESET Output nRESET or TRST.
Indicator status Description
Off Power to target is not provided by I-jet.
Green Power to target is provided by I-jet.
Yellow Warning. Power to target is above 420 mA.
Red Error. Overcurrent limit (520 mA) detected and power to target was
switched off for protection.
Table 5: TPWR indicator statuses
Indicator status Description
Off vTRef on JTAG header is too low.
Green vTRef is at or above 1.8 V.
Green blinking Indicates JTAG/SWD communication activity.
Table 6: DBG indicator statuses
Pin Signal Type Description
Table 4: MIPI-10 pin definitions (Continued)
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