Z-World RabbitCore, Руководство пользователя

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User’s Manual 69
B.1.1 Prototyping Board Features
• Power Connection
—A 3-pin header is provided for connection 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 DCIN input. The cable of the AC adapter provided
with the North American version of the Development Kit ends in a plug that connects
to the power-supply header, and can be connected to the 3-pin header in either orienta-
tion. A similar header plug leading to bare leads is provided for overseas customers.
Users providing their own power supply should ensure that it delivers 7.5–30 V DC at
500 mA. The voltage regulators will get warm while in use.
• Regulated Power Supply
—The raw DC voltage provided at the POWER IN power-
input 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 RCM3600 module and the Proto-
typing 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
RCM3600’s
/RESET_IN
pin. Pressing the switch forces a hardware reset of the system.
•
I/O Switches and LEDs —Two momentary-contact, normally open switches are con-
nected to the PF4 and PB7 pins of the RCM3600 module and may be read as inputs by
sample applications.
Two LEDs are connected to the PF6 and PF7 pins of the RCM3600 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 at both edges 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.
• LCD/Keypad Module
—Z-World’s LCD/keypad module may be plugged in directly to
headers LCD1JA, LCD1JB, and LCD1JC. The signals on headers LCD1JB and
LCD1JC will be available only if the LCD/keypad module is plugged in to header
LCD1JA. Appendix C provides complete information for mounting and using the
LCD/keypad module.
•
Module Extension Headers —The complete non-analog pin set of the RCM3600
module is duplicated at header J3. Developers can solder wires directly into the appro-
priate holes, or, for more flexible development, a 2 x 20 header strip with a 0.1" pitch
can be soldered into place. See Figure B-4 for the header pinouts.
• Analog I/O Shrouded Headers
—The complete analog pin set of the RCM3600
Prototyping Board is available on shrouded headers J8 and J9. See Figure B-4 for the
header pinouts.