Difference between revisions of "AXEL Lite SOM/AXEL Lite Evaluation Kit/Interfaces and Connectors/JTAG"
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| + | |||
| + | === JD1 - EVB Connector's pinout === | ||
| + | |||
| + | JD1 is a 10x1x2.54mm pinhole header. The following table reports the connector's pinout: | ||
| + | |||
| + | [[File:SBC-AXEL-JTAG.png|thumb|center| 500px|EVB JTAG connector]] | ||
| + | |||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | !Pin# | ||
| + | !Pin name | ||
| + | !Function | ||
| + | !Notes | ||
| + | |- | ||
| + | |1 || DGND || - | ||
| + | | | ||
| + | |- | ||
| + | |2 || JTAG_TCK || - | ||
| + | | - | ||
| + | |- | ||
| + | |3 || JTAG_TMS || - | ||
| + | | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) | ||
| + | |- | ||
| + | |4 || JTAG_TDO || - | ||
| + | | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) | ||
| + | |- | ||
| + | |5 || JTAG_TDI || - | ||
| + | | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) | ||
| + | |- | ||
| + | |6 || JTAG_nTRST || - | ||
| + | | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) | ||
| + | |- | ||
| + | |7 || JTAG_nRST || - | ||
| + | | - | ||
| + | |- | ||
| + | |8 || N.C. || - | ||
| + | | - | ||
| + | |- | ||
| + | |9 || N.C. || - | ||
| + | | - | ||
| + | |- | ||
| + | |10 || JTAG_VREF || - | ||
| + | | | ||
| + | |- | ||
| + | |} | ||
Revision as of 11:48, 22 September 2021
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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
JD1 - EVB Connector's pinout[edit | edit source]
JD1 is a 10x1x2.54mm pinhole header. The following table reports the connector's pinout:
| Pin# | Pin name | Function | Notes |
|---|---|---|---|
| 1 | DGND | - | |
| 2 | JTAG_TCK | - | - |
| 3 | JTAG_TMS | - | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
| 4 | JTAG_TDO | - | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
| 5 | JTAG_TDI | - | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
| 6 | JTAG_nTRST | - | 10K pull-up to 3V3 (BOARD_PGOOD driven signal) |
| 7 | JTAG_nRST | - | - |
| 8 | N.C. | - | - |
| 9 | N.C. | - | - |
| 10 | JTAG_VREF | - |
