UM-GP-002
GreenPAK Advanced Development Platform
User Manual
Revision 2.2
21-Feb-2020
CFR0012
10 of 40
© 2020 Dialog Semiconductor
Figure 5: Socket and Expansion Connector Schematic
Expansion connector is enabled only in Emulation mode or Test mode. To enter either of these two
modes the GreenPAK chip must be in the socket. When the Test mode button is pressed the
software will first read the chip to verify if it was inserted and then configure the GreenPAK Advanced
Development Board as set in Emulation Tool window. When the Test mode button is gray then the
Development Platform is in Default state and all expansion port switches are open (disconnected).
After Emulation button is pressed, the software will automatically perform the following steps:
▪
check chip presence
▪
open all expansion port switches (external signals/loads can be left connected to expansion port)
▪
use internal power and load configuration to the chip
▪
only for case #3: adjust internal power source to external power level → close external power
switch → open internal power switch
▪
configure Development Board as set in Emulation Tool window
Parasitic effects should be also considered while using the GreenPAK Advanced Development Board
in-circuit with analog signals. The entire Development Board circuitry along with the wiring have a
significant amount of mutual capacitance and inductance. The detachable socket can also be used
for the in-circuit development with programmed chips (the Development Board and socket
connectors have the same pinout).
The GreenPAK Advanced Development Board provides three possible ways of using expansion
connector:
1) Internal power is used to run the chip, no external power output is needed, external signal
sources and loads can be connected between pins and GND.
