Pinout Specification for µTrace |
 
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Pinout
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| Signal | Pin | Pin | Signal | ||
|---|---|---|---|---|---|
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| VREF-DEBUG | 1 |  |  | 2 | TMS|TMSC|SWDIO |
| GND | 3 | | | 4 | TCK|TCKC|SWCLK |
| GND | 5 | | | 6 | TDO|-|SWO |
| GND (KEY) | 7 |  | | 8 | TDI |
| GND | 9 | | | 10 | RESET- |
| GND | 11 | | | 12 | TRACECLK |
| GND | 13 | | | 14 | TRACEDATA[0] |
| GND | 15 | | | 16 | TRACEDATA[1] |
| GND | 17 | | | 18 | TRACEDATA[2] |
| GND | 19 | | | 20 | TRACEDATA[3] |
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Note:
Off-chip tracing is only supported by µTrace® for Cortex-M.
However, µTrace® for RISC-V will support off-chip trace promptly after adoption of a trace standard by the RISC-V Foundation.
MIPI10 Connector for Debug Only (with optional Serial Wire Output)
| Signal | Pin | Pin | Signal | ||
|---|---|---|---|---|---|
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| VREF-DEBUG | 1 | | | 2 | TMS|TMSC|SWDIO |
| GND | 3 | | | 4 | TCK|TCKC|SWCLK |
| GND | 5 | | | 6 | TDO|-|SWO |
| GND (KEY) | 7 | | | 8 | TDI |
| GND | 9 | | | 10 | RESET- |
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IDC20A Connector for Debug Only (with opt. Serial Wire Output) via Included Converter LA-2730
| Signal | Pin | Pin | Signal | ||
|---|---|---|---|---|---|
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| VREF-DEBUG | 1 | | | 2 | VSUPPLY (not used) |
| TRST- | 3 | | | 4 | GND |
| TDI | 5 | | | 6 | GND |
| TMS|TMSC|SWDIO | 7 | | | 8 | GND |
| TCK|TCKC|SWCLK | 9 | | | 10 | GND |
| N/C | 11 | | | 12 | GND |
| TDO | 13 | | | 14 | GND |
| RESET- | 15 | | | 16 | GND |
| N/C | 17 | | | 18 | GND |
| N/C | 19 | | | 20 | GND |
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| Pin | Direction | Description |
|---|---|---|
| TCK|TCKC|SWCLK | to CPU | JTAG Clock. It is recommended to put a pull-down to GND on this signal. |
| TMS | to CPU | Standard JTAG TMS: It is recommended to put a pull-up to VTREF on this signal for standard 4-pin JTAG. |
| TMSC | to/from CPU | Compact JTAG TMSC: Your chip should have a bus-hold on this line for compact JTAG. |
| SWDIO | to/from CPU | Serial Wire Debug In/Out |
| TDI | to CPU |
JTAG TDI. It is recommended to put a pull-up to VTREF on this signal. Only required for standard 4-pin JTAG / Optional signal for compact JTAG. |
| TDO | from CPU |
JTAG TDO. (No pull-up or pull-down is required.) Only required for standard 4-pin JTAG / Optional signal for compact JTAG. |
| VREF-DEBUG | from CPU | Reference voltage. This voltage should indicate the nominal HIGH level for the debug and trace pins. So for example, if your signals have a voltage swing from 0 V ... 3.3 V, the VTREF pin should be connected to 3.3 V. |
| RESET- | to/from CPU |
System Reset Signal. (Optional) If your target board has a low active CPU reset signal, you can connect this low active reset signal to this pin. This enables the debugger to detect a CPU reset. Furthermore the debugger can drive this pin to GND to hold the CPU in the reset state. The debugger drives this pin as open-drain, so a pull-up is mandatory. |
| TRC CLK | from CPU |
Trace clock (used with off-chip trace) |
| TRC DATA[3..0] | from CPU |
Trace data (used with off-chip trace) |
The MIPI20T-HS Whisker of a µTrace® can be used directly with two different connectors (MIPI10, MIPI20T).
Via the includes converter LA-2730, the MIPI20T-HS Whisker can be connected to a classic IDC20A debug connector, too.
Via the includes converter LA-2730, the MIPI20T-HS Whisker can be connected to a classic IDC20A debug connector, too.
| Connector | Pins | Pitch | Samtec Order No | Description | Dimensions (Samtec) |
|---|---|---|---|---|---|
| MIPI20T | 20 | 0.05" |  FTSH-110-01-L-DV-K | Micro header with keying shroud | FTSH Surface Mount Micro Header |
| MIPI10 | 10 | 0.05" | FTSH-105-01-L-DV-K | Micro header with keying shroud | FTSH Surface Mount Micro Header |
| IDC20A | 20 | 0.10" | HTST-110-01-L-DV | Classic header with keying shroud | Shrouded .025" Sq Post IDC Headers |
µTrace® supports various interface standards:
Interface type and corresponding pin function can be selected in the debugger GUI.
| JTAG | IEEE 1149.1 | alternate pin function: TMS, TCK, TDO |
| Compact JTAG | IEEE 1149.7 | alternate pin function: TMSC, TCKC, - |
| Serial Wire Debug | CoreSight ARM | alternate pin function: SWDIO, SWCLK, SWO |
Interface type and corresponding pin function can be selected in the debugger GUI.
To connect to a target with a different connector, the following converters can be used.
The converter LA-2730 to connect to a classic IDC20A debug connector, is already included in your µTrace® package.
The converter LA-2730 to connect to a classic IDC20A debug connector, is already included in your µTrace® package.
Picture
Order No.
Probe
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The information presented is intended to give overview information only. Changes and technical enhancements or modifications can be made without notice. Report Errors Last generated/modified: 06-Mar-2024 |
