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MCB2130 User's Guide
Introduction 
Setup 
Board Setup Board Components Connecting with ULINK Connecting with Serial ISP Verifying the COM Connection Configuring the MCB2130 Jumper Descriptions Theory of Operation Writing Programs Example ProgramsJumper Descriptions
The jumpers used to configure the MCB2130 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 AIN0: connects the POT1 potentiometer to the analog input AIN0.
- J3 - 3.3V: Supply Voltage for CPU: connects the 3.3V Supply Voltage to the CPU.
- J4 - VBAT: Supply Voltage for CPU: connects battery Supply Voltage to the CPU.
- J5 - V3A: Analog Reference Voltage for CPU: connects the 3.3V Supply Voltage to the CPU Analog Reference Input V3A.
- J6 - LED: Enable LED Driver: enables the LED driver connecting the on-board LEDs to GPIO Port1.16 - Port1.23.
- 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.
- J8 - ETM: Enable Embedded Trace Module: enables the Embedded Trace Module (ETM). Port1.16 - Port1.23 LEDs cannot be used when J8 is installed because these pins share the same ETM signals.
- 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.
- J11 - VREF: A/D Converter Reference Voltage: connects 3.3V Supply Voltage VREF of the CPU.
- J12: There is no J12 jumper on the board.
- J13 - AOUT: D/A Output for loudspeaker: connects the AOUT output to the LF amplifier.
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