User`s manual

DemoKit-LG2 User’s Manual
6
JP1 Setting Mode
1–2 Closed (default) USB interface-supplied power (CN7)
2–3 Closed Battery-supplied power (BAT1)
3.2 Jumper JP2: Power Selection for On-Chip Debugging
The power supply can also be applied using the QB-78K0MINI on-chip debugging (OCD) emulator.
Close jumper JP2 to apply power from the QB-78K0MINI.
JP2 Setting Mode
Open (default)
Power supply via USB or battery
1-2
Closed
Power supply via QB
-
78K0MINI emulator
3.3 Jumper JP3: Clock Supply Selection
Jumper JP3 controls the MCU’s clock supply. Closing JP3 applies an external frequency of 6 MHz to
the MCU’s P122/X2 clock input pin. Opening JP3 allows an external oscillator to be used when pad X1
(not assembled) of the kit is equipped with a corresponding oscillator.
JP3 Jumper Setting Mode
1-2 Closed (default) Clock frequency = 6 MHz, supplied by CPLD
Open
Clock supply by external oscillator. By using this mode be
sure to equip a crystal oscillator to the X1 pad. For using the
QB-78K0MINI on-chip debugging emulator
3.4 SW1 Configuration Switches
The board’s different operating modes can be set using SW1 switches S1–S4.
SW1 Factory Setting Mode
S1 OFF Normal operation
S2 OFF UART6 selected
S3 OFF On-chip debugging disabled
S4 OFF On-board debugging enabled
3.4.1 SW1/S1: Operating Mode Selection
SW1 switch S1 controls the DemoKit-LG2 board’s operating mode. Setting SW1/S1 to ON allows you
to reprogram the MCU’s internal flash memory using the FPL3 flash programming software.