6
7
freescale.com
Quick Start Guide
Jumper Options
The following is a list of all the jumper options. The default installed jumper settings are
shown in shaded boxes.
Jumper Option
Setting
Description
J8
MCU Power
Connection
ON
Connect onboard 3.3 V supply to MCU
OFF
Isolate MCU from power
(connect an ammeter to measure current)
J9
VBAT Power
Selection
1-2
Connect VBAT to on-board 3.3 V supply
2-3
Connect VBAT to the higher voltage between on-board 3.3 V supply
or coin-cell supply
J6
Clock Input
Source
Selection
1-2
Connect main EXTAL to onboard 50 MHz clock
2-3
Connect EXTAL to the CLKIN0 signal on the elevator connector
J10
OSJTAG
Bootloader
Selection
ON
OSJTAG bootloader mode
(OSJTAG firmware reprogramming)
OFF
Debugger mode
Jumper
Option
Setting
Description
J12
JTAG Board
Power
Connection
ON
Connect on-board 5 V supply to JTAG port (supports powering
board from JTAG pod supporting 5 V supply output)
OFF
Disconnect onboard 5 V supply to JTAG port
J2
IR Transmitter
Connection
ON
Connect PTD7/CMT_IRO to IR Transmitter (D1)
OFF
Connect PTD7/CMT_IRO to IR Transmitter (D1)
J1
VREGIN
Power
Connection
ON
Connect USB0_VBUS from Elevator to VREGIN
OFF
Disconnect USB0_VBUS from Elevator to VREGIN
