System Power
J3 - Regulator Input Selection Jumper
J4 - Regulator Output Selection Jumper VOLT_EN
J5 - VDD Source Selection Jumper VDD_SELECT
RS232 Communications
J6 - SCI RXD Signal Selection Jumper RXD_EN
J7 - SCI TXD Signal Selection Jumper TXD_EN
J8 - SCI Transceiver Enable COM_EN
LED Display Port
J9 - LED Display Enable Port LED_ENABLE
Input and Reset Switches
J11 - P&E’s Logic Analyzer Inputs IN0/IN1
J12 - Light Touch Switch Enable Jumper KEY_ENABLE
J18 - Reset Switch Enable and Reset LED Display Enable Jumper RESET_EN
3-Axis Accelerometer Jumper Settings
J13 - Accelerometer g-Select1 Jumper G-SEL1
J14 - Accelerometer g-Select2 Jumper G-SEL2
J15 - Accelerometer Sleep Mode Select Jumper SLEEP
J16 - Accelerometer 3-axis Signals Connection Jumper ACC_EN
Buzzer
J19 - Buzzer enable jumper BUZ_EN
IIC Pull-up
J20 - IIC Pullup Enable Jumpers IIC_EN
Analog Input Potentiometer
J21 - Potentiometer Output Selection Jumpers POT_EN
Optional External Crystal Circuitry Jumper Enable
J17 - External Crystal Circuitry Enable Jumpers CLOCK_EN
