User`s manual

User’s Manual 73
B.1.1 Prototyping Board Features
• Power Connection—A power-supply jack and a 3-pin header are provided for con-
nection to the power supply. Note that the 3-pin header is symmetrical, with both outer
pins connected to ground and the center pin connected to the raw V+ input. The cable
of the AC adapter provided with the North American version of the Development Kit is
terminated with a 5.5 mm plug that connects to the power-supply jack. The header plug
leading to bare leads provided for overseas customers can be connected to the 3-pin
header in either orientation.
Users providing their own power supply should ensure that it delivers 8–24 V DC at
8 W. The voltage regulators will get warm while in use.
• Regulated Power Supply—The raw DC voltage provided at the POWER IN jack is
routed to a 5 V switching voltage regulator, then to a separate 3.3 V linear regulator.
The regulators provide stable power to the RCM3400 module and the Prototyping
Board.
• Power LED—The power LED lights whenever power is connected to the Prototyping
Board.
• Reset Switch—A momentary-contact, normally open switch is connected directly to the
RCM3400’s /RESET_IN pin. Pressing the switch forces a hardware reset of the system.
• Programming Header—The programming cable is used to connect the RCM3400 via
the programming header on the Prototyping Board to your PC to enable you to program
your RCM3400 module.
• I/O Switches and LEDs—Two momentary-contact, normally open switches are con-
nected to the PD4 and PD5 pins of the RCM3400 module and may be read as inputs by
sample applications.
Two LEDs are connected to the PD6 and PD7 pins of the RCM3400 module, and may
be driven as output indicators by sample applications.
•
Prototyping Area—A generous prototyping area has been provided for the installation
of through-hole components. +3.3 V, +5 V, and Ground buses run around the edge of
this area. Several areas for surface-mount devices are also available. (Note that there
are SMT device pads on both top and bottom of the Prototyping Board.) Each SMT pad
is connected to a hole designed to accept a 30 AWG solid wire.
• Module Extension Headers—The complete non-analog pin set of the RCM3400
module is duplicated at header J1. Developers can solder wires directly into the appro-
priate holes, or, for more flexible development, a 2 × 30 header strip with a 0.1" pitch
can be soldered into place. See Figure B-4 for the header pinouts.
• Analog Inputs Screw-Terminal Header—The complete analog pin set of the
RCM3400 module is duplicated at screw-terminal header J3. See Figure B-4 for the
header pinouts.
• Ethernet—One 10/100Base-T Ethernet port is available on the Prototyping Board with
an RJ-45 jack at J7. LNK and ACT LEDs indicate a live Ethernet link and Ethernet
activity.