Datasheet

RSKRX210 6. Configuration
R20UT0302EG0200 Rev. 2.00 Page 17 of 41
Jul 09, 2012
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 or by
configuration DIP switches
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, jumpers and DIP switches.
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 some of the MCU’s pins are multiplexed, some of the peripherals must be used exclusively.
Refer to the RX210 hardware manual and RSKRX210 board schematics for further information.
6.2 MCU Operating Modes
Table 6-1 below details the function of the jumpers associated with the MCU operating modes.
Reference Position One Position Two Position Three Related Ref.
J16
All pins open. MCU
starts in normal mode.
All pins closed. MCU starts
in CPU boot mode.
n/a
-
J18
All pins open.
Disconnects UB (MCU,
pin 45) to Board_VCC.
Puts the MCU into Boot
Mode (SCI).
All pins closed. Connects
UB (MCU, pin 45) to
Board_VCC.
Puts the MCU into User
Boot Mode.
n/a R283
Table 6-1: MCU Operating Mode Jumper Settings