Difference between revisions of "RIALTO SBC/Interfaces and Connectors/JTAG"
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!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History | !colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History | ||
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!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Notes | !style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Notes | ||
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Revision as of 14:09, 12 January 2024
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| History | |||
|---|---|---|---|
| Issue Date | Notes | ||
| 2023/01/09 | First documentation release | ||
JTAG interface[edit | edit source]
Description[edit | edit source]
JTAG signals are routed to a dedicated connector on the RIALTO SBC PCB.
The connector is placed near the J60 mezzanine connector and J46 WiFi connector (please see the picture below).
Signals[edit | edit source]
The following table describes the interface signals:
| Pin# | Pin name | ARM-20 JTAG | Notes |
|---|---|---|---|
| 1 | DGND | Ground | 4,6,8,10,12,14,16,18,20 |
| 2 | JTAG_TCK | 9 | |
| 3 | JTAG_TMS | 7 | |
| 4 | JTAG_TDO | 13 | |
| 5 | JTAG_TDI | 5 | |
| 6 | JTAG_nTRST | 3 | keep the possibility to be unconnected |
| 7 | CPU_PORn | 15 | keep the possibility to be unconnected |
| 8 | JTAG_MOD | Internally used as GPIO for USB OTG power enable in Host mode | |
| 9 | n.c. | ||
| 10 | JTAG_VREF | 1 | 3V3 internal pull-up |
