ARM DS-5 Manual page 48

Signal I/O
TRACECLK Input
TRACEEXT Input
VTREF Input
GND -
KEY -
ARM 100956_0527_00_en
Description
The Trace Clock pin provides DSTREAM with the clock signal necessary to sample the trace data
signals. You are advised to series terminate TRACECLK close to the target processor.
The Trace Extension pin is a generic trace sideband pin. TRACEEXT is not currently supported
by DSTREAM. TRACEEXT can be pulled high, low, or left unconnected on the target.
The Voltage Target Reference pin supplies DSTREAM with the debug rail voltage of the target to
match its I/O logic levels. VTREF can be tied HIGH on the target. If VTREF is pulled HIGH by a
resistor, its value must be no greater than 100Ω.
Ground.
This pin must not be present on the target connector.
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2 ARM DSTREAM Target Interface Connections
2.9 The MIPI 34 connector pinouts and interface signals
Table 2-17 MIPI 34 signals (continued)
2-48