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MCB2103 User's Guide
Introduction 
Setup 
Board Setup Board Components Connecting with ULINK Connecting with Serial ISP Verifying the COM Connection Configuring the MCB2103 Jumper Descriptions Theory of Operation Writing Programs Example ProgramsJumper Descriptions
The jumpers used to configure the MCB2103 board are:
- J1 - ISP: Enable for In-System Programming: lets the RTS line of the COM0 port generate a signal on P0.14 (EINT1). When RTS is active P0.14 is driven low. This is used to enter In-System Programming (ISP) mode.
- J2 - AV: Analog Voltage for AD0: connects the POT1 potentiometer to the analog input AD0.
- J3 - 3.3V: Supply Voltage for CPU: connects the 3.3V supply voltage to VDD3 of the CPU.
- J4 - V1.8V: Supply Voltage for CPU: connects the 1.8V battery supply voltage to the CPU.
- J5 - VDDA: Supply Voltage for CPU: connects the 3.3V supply voltage to the CPU Analog Reference Input VDDA.
- J6 - Enable LED Driver: enables the LED driver connecting the on-board LEDs to GPIO Port0.16 - Port0.23.
- J7 - INT1: Enable Push Button INT1: connects the push button INT1 to the CPU I/O pin P0.14 (EINT1 input). Pushing the button generates a low signal.
- J9 - JTAG: Enable JTAG Interface: enables the JTAG interface. This jumper is required for ISP flashing and for debugging via Keil ULINK or other JTAG debuggers.
- J10 - RST: Enable Reset via COM0 Port: When RST is set, you may generate a CPU RESET signal using the DTR signal of the COM0 port. An active DTR signal generates a CPU RESET.
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