User manual

RSKRX62T 6. Configuration
REJ10J2194-0300 Rev.3.00 Page 18 of 40
Nov 08, 2011
6. Configuration
6.1 Modifying the RSK
This section lists the option links that are used to modify the way RSK operates in order to access different
configurations. Configurations are made by modifying link resistors or headers with movable jumpers.
A link resistor is a 0Ω surface mount resistor, which is used to short or isolate parts of a circuit. Option links are
listed in the following sections, detailing their function when fitted or removed. Bold, blue text indicates the default
configuration that the RSK is supplied with. Refer to the component placement diagram (§3) to locate the option
links and jumpers.
When removing soldered components, always ensure that the RSK is not exposed to a soldering iron for intervals
greater than 5 seconds. This is to avoid damage to nearby components mounted on the RSK.
When modifying a link resistor, always check the related option links to ensure there is no possible signal contention or
short circuits. Because many of the MCU’s pins are multiplexed, some of the peripherals must be used exclusively.
Refer to the RX62T hardware manual and RSKRX62T board schematics for further information.
6.2 MCU Configuration
Table 6-1 below details the option links associated with configuring the MCU operating modes and emulator
support.
Reference Position One Position Two Position Three Related Ref.
J6* Pins 1 and 2 shorted.
Do not use this setting.
Pin 2 and 3 shorted.
Single Chip Mode & Boot
Mode.
All pins open.
Single Chip Mode Only
R66
J8 Pins 1 and 2 shorted.
Connects EMLE to
Board_VCC.
Emulator enabled.
Pins 2 and 3 open.
Connects EMLE to
GROUND.
Unused.
All pins open.
Do not use this
setting.
R68
Table 6-1: MCU Option Links
*By default, this jumper is not fitted to the RSK. R66 is fitted by default and MD0 is pulled high by R64.
Table 6-2 below details the different configurations and functions of the MCU operating mode jumpers.
Reference Position One Position Two Related Ref.
J7 Pins 1 and 2 shorted. Connects MDE to
Board_VCC (pulled to GROUND by
R67).
Big Endian selected.
Pins 1 and 2 open. Connects MDE to
GROUND (pulled by R67).
Little Endian selected.
R67
Table 6-2: MCU Operating Mode Jumpers