Renesas RX200 Series, Руководство пользователя

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Renesas Solution Starter Kit for RX23W 6. Configuration
R20UT4446EG0102 Rev. 1.02 Page 23 of 41
Jun 22, 20
6. Configuration
6.1 Modifying the RSSK
This section lists the option links that are used to modify the way CPU board 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 li nk resistor is a 0Ω su rface 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 CPU board 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 CPU board is not exposed to a soldering iron for
intervals greater than 5 seconds. This is to avoid damage to nearby components mounted on the board.
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 ‘RX23W Group User’s Manual: Hardware’ and CPU board schematics for further information.
In the table in this section, "pin" expression is omitted, so please read as follows.
Example: U9.4 -> U9.4pin
J7(1-2 short) -> J7(1pin-2pin short)
6.2 MCU Operating Modes
Table 6-1
below details the option links associated with configuring the MCU Operating Modes.
Table 6-1: MCU Operating Modes Switch Settings
SW3 Pin1 SW3 Pin2 J8
*1
Configuration Related Links
OFF OFF(don’t care) Open(don’t care) Single Chip Mode -
OFF OFF Open(don’t care) Boot Mode(FINE Interface) -
ON OFF Open(don’t care) Boot Mode (SCI Interface)
*2
R205, R209, J7
ON ON
Open
Boot Mode (USB Interface)
(Bus-powered)
*3
J5 (1-2 Short) , J3 (2-3 Short), R201, X2
Short
Boot Mode (USB Interface)
(Self-powered)
*3
J5 (1-2 Short), J3 (Open) , R201, X2
*1
: Jumper J8 is not mounted on the board at the time of product shipment.
*2
: The USB serial port that can be used in the factory setting, does not support boot mode (SCI interface).
When using boot mode (SCI interface), change the port used to P26 and P30 according to § 6.17.
*3 : USB-VBUS, which can be used in the factory setting, does not support boot mode (USB interface). When
using the boot mode (USB interface), refer to § 6.18 and change the port used to P16. You also need an
external clock (X2). Change the option link referring to § 6.5.