AFE1_AFE2-1:1
I-jet
27
The R2 pull-down on pin 17 of the I-jet MIPI20 connector is a signal to I-jet that a legacy
ADA-MIPI20-ARM20 adapter is being used. Other adapters will have different resistors
so that I-jet can identify them if needed. A solid GND on this pin means that no adapter
is being used, and that the MIPI cable is connected directly between the I-jet and the
target board.
The ADA-MIPI20-TI14 adapter
The ADA-MIPI20-TI14 adapter converts the I-jet standard MIPI-20 cable pinout to the
Texas Instruments legacy 14-pin JTAG interface used on older OMAP and other
TMS320, TMS470, and TMS570 target boards.
The adapter has the MIPI-20 male header on top for connecting the I-jet MIPI-20 cable
and a TI-14-style female header (socket) on the bottom. The TI-14 JTAG header is a
14-pin, double-row, 0.1 in × 0.1 in (2.56 mm × 2.56 mm) pitch connector with a key
(plug) in position 6 to prevent misconnections. In case the plug is missing, a white arrow
on pin 1 of the TI-14 connector helps you ensure proper orientation.
nSRST I/O System Reset Active LOW open-collector signal that is driven by
I-jet to reset the device and/or the target board.
I-jet senses this line to determine when you have
reset the device.
Vsupply Output -- This pin is not connected to I-jet.
DBGRQ Output -- This pin is not connected on I-jet.
DBGAC
K/TRGP
WR
Output Target Power This pin is used under SW control to supply 5 V
power to the target board. It should be routed
through a jumper shunt to the 5 V DC board input to
eliminate the power adapter during debugging. The
maximum current supplied by I-jet on this pin is
about 420 mA. When the current supplied reaches
~500 mA, the power will be shut down for
protection.
Pin
I-jet
direction
Name Description
Table 9: ADA-MIPI20-ARM20 adapter pin definitions (Continued)
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