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Indicators
Indicators
I-jet®
16
User Guide
Pin Signal
Type
8
TDI
Output
Table 2: MIPI-10 pin definitions
I-jet has three LED indicators on the front. This section describes the indicators and their
statuses.
USB
Indicator status
Description
Off
No USB power.
Green steady
Initial state or no transfer.
Green blinking
USB transfers to or from I-jet.
Red blinking
USB enumeration.
Red steady
USB did not enumerate or broken hardware.
Table 3: USB indicator statuses
JTAG
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 4: JTAG indicator statuses
TPWR (TARGET POWER)
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.
Table 5: TPWR indicator statuses
Description
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 which do
not provide TDI (SWD-only devices), this pin is not used.
I-jet will ignore the signal on this pin when using SWD.
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