Jumper configuration
J1: Target reset configuration
Jumper J1 connects the Emulation Adapter reset line and the user target board reset line and
is populated by default. Emulation Adapter also features a Reset push button (SW1).
If having problems establishing the initial debug session with the Emulation Adapter, remove
J1 and try again.
J2 and J3: Clock source configuration
Jumpers J2 and J3 select clock source for the emulation device.
Position 1-2 (default position) selects the crystal circuit oscillator on
the user target board.
Position 2-3 selects an external clock source (Q1 socket on the
Emulation Adapter).
The Emulation Adapter may not operate when user target board’s crystal circuit is used
as the clock source. Typical design guideline is that the crystal should be as close as
possible to the microcontroller. The crystal on the user target board might not oscillate
in conjunction with the Emulation Adapter when the clock lines (TP21_2, TP21_3)
between the crystal and the emulation device on the Emulation Adapter become too
long, thus affecting the impedance of the crystal circuit.
Enclosed in the Emulation Adapter package is a separately packed 20 MHz crystal. The
crystal can be used as a 20MHz external clock (XOSC) source to the emulation device.
If a different clock frequency is required, insert appropriate crystal into the Q1 socket
and replace C7 (default 10pF populated) and C8 (default 10pF populated)
accordingly.
Crystal socket Q1 is per default not populated (NP).
