Configuration
J1: Target reset configuration
Jumper J1 connects the SPC58EC80 reset line and the target reset line. By default, J1 is popu-
lated.
When having problems establishing the initial debug session with the emulation adapter, try to
remove J1 and see if it makes any difference.
J2 and J3: Clock source configuration
Jumpers J2 and J3 select external clock source (XOSC) for the emulation device. Per default,
both jumpers are set to position 1-2, which yields the external clock (XOSC) source being used
from the target.
If an oscillator in the target is not an option and the target crystal doesn't oscillate in conjunc-
tion with the Emulation Adapter, the Emulation Adapter can also provide the external clock
(XOSC) source by setting jumpers J2 and J3 in position 2-3. In this case, a crystal circuit must
be built on the Emulation Adapter.
Note that the Emulation Adapter may not operate when crystal circuit is used in the
target. Typical design guideline is that the crystal should be as close as possible to
the microcontroller.
It can happen that the target crystal does not oscillate in conjunction with the Emula-
tion Adapter since clock lines (XTAL, EXTAL) between the target crystal and the emu-
lation device on the Emulation Adapter become too long, inevitably too much affect-
ing the impedance of the crystal circuit. If a "standalone" oscillator is used instead of
the crystal circuit, no problems are expected.
The crystal packed separately in the antistatic bag comes along the Emulation Ad-
apter. It can be used to feed an external clock source (XOSC) to the emulation device
by inserting the crystal into the Q1 socket. If a different clock frequency is required,
use suitable crystal and insert it into the Q1 socket.
The emulation adapters of revision A4 or lower were delivered with a 40 MHz crystal,
while the adapters of revision A5 or higher are delivered with a 20 MHz crystal.
Crystal Q1 is located in the corner of the Emulation Adapter, next to the 38-pin Mictor connector
P1 and per default not populated:
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