Pinout Specification for MIPI20T-HS Whisker

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 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.

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

The MIPI20T-HS Whisker supports various interface standards:

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 with your MIPI20T-HS Whisker.