Jetson nx jtag

Hi, it there a JTAG on the NX connector pins ?

thank you

Hi, Jtag pins are NOT routed out.

Hi Trumany, thank you for you response.

Hi @Trumany,

As a follow up question. The Jetson Nano module does not route JTAG to the module pins either. However, the Jetson Nano does provide test points on the underside of the module to gain access to JTAG signals as shown in the Jetson Nano Product Design Guide Figure 10-8.

image

The L4T documentation suggests that JTAG debugging is possible with the Jetson Xavier NX module, but there is no similar description or illustration of the JTAG test points in the Jetson Xavier NX Product Design Guide.

On the bottom side of the Jetson Xavier NX module, there are 10 exposed test points.

Are any of these test points used for JTAG?

Yes, that are TP of Jtag, but not wired to module connector.
jtagtp

Okay. Excellent. Thank you.

Where can I find the mapping of NX module test points to JTAG signals?

The mapping is as below:
TP89 - NVJTAG_SEL
TP59 - JTAG_TCK
TP60 - JTAG_TDI
TP61 - JTAG_TDO
TP62 - JTAG_TMS
TP63 - JTAG_TRST_N

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