Difference between revisions of "AXEL Lite SOM/AXEL Lite Hardware/Power and Reset/JTAG"
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[[File:Axellite-jtag-conn.png|500px|frameless|border]] | [[File:Axellite-jtag-conn.png|500px|frameless|border]] | ||
| − | === J7 - Connector's pinout === | + | === J7 - SOM Connector's pinout === |
J7 footprint mates with Samtec FSI-110-03-G-S connector. The following table reports the connector's pinout: | J7 footprint mates with Samtec FSI-110-03-G-S connector. The following table reports the connector's pinout: | ||
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|- | |- | ||
|6 || JTAG_nTRST || - | |6 || JTAG_nTRST || - | ||
| − | |3|| 10K pull-up to 3V3 (BOARD_PGOOD driven signal) | + | |3 (*) || 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
|- | |- | ||
|7 || CPU_PORn || - | |7 || CPU_PORn || - | ||
| − | |15|| - | + | |15 (*)|| - |
|- | |- | ||
|8 || N.C. || - | |8 || N.C. || - | ||
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| − | + | (*) keep the possibility to be unconnected | |
---- | ---- | ||
[[Category:AXEL Lite]] | [[Category:AXEL Lite]] | ||
Latest revision as of 17:12, 8 January 2024
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| History | |||
|---|---|---|---|
| Issue Date | Notes | ||
| 2020/09/22 | New documentation layout | ||
On board JTAG connector[edit | edit source]
JTAG signals are routed to a dedicated connector on the AXEL Lite PCB.
The connector is placed on the top side of the PCB, at the upper-right corner (please see the picture below).
J7 - SOM Connector's pinout[edit | edit source]
J7 footprint mates with Samtec FSI-110-03-G-S connector. The following table reports the connector's pinout:
| Pin# | Pin name | Function | ARM-20 JTAG | Notes |
|---|---|---|---|---|
| 1 | DGND | - | 4,6,8,10,12,14,16,18,20 | For example documented on Lauterbach specification |
| 2 | JTAG_TCK | - | 9 | - |
| 3 | JTAG_TMS | - | 7 | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
| 4 | JTAG_TDO | - | 13 | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
| 5 | JTAG_TDI | - | 5 | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
| 6 | JTAG_nTRST | - | 3 (*) | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
| 7 | CPU_PORn | - | 15 (*) | - |
| 8 | N.C. | - | - | |
| 9 | N.C. | - | - | |
| 10 | JTAG_VREF | - | 1 | 3V3 (BOARD_PGOOD driven signal) |
(*) keep the possibility to be unconnected
