Configuration - TASKING ST SPC58 2B LINE Hardware User Manual

Configuration

For a detailed visual presentation of the hardware setup and configuration, refer to:
·
Getting started Tutorials - use the link isystem.com/start
·
Getting started with Emulation Adapter Video Tutorial - use the link
isystem.com/ea-intro
J1: Target reset configuration
Jumper J1 connects the reset line between the emulation device and the target. By default J1 is
populated.
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 conjunction
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
Emulation Adapter since clock lines (XTAL, EXTAL) between the target crystal and the
emulation device on the Emulation Adapter become too long, inevitably too much
affecting 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 Adapter.
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 A5 or lower were delivered with a 40 MHz crystal,
while the adapters of revision A6 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.
www.tasking.com