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B.2 RCM3720 Prototyping Board
The RCM3720 Prototyping Board included in the Ethernet Connection Kit makes it easy
to connect an RCM3720 module to a power supply and a PC workstation for development.
It also provides some basic I/O peripherals (LEDs and switches), as well as a prototyping
area for more advanced hardware development. An optional RS-232 chip can be added for
RS-232 serial communication.
For the most basic level of evaluation and development, the RCM3720 Prototyping Board
can be used without modification.
As you progress to more sophisticated experimentation and hardware development, modi-
fications and additions can be made to the board without modifying or damaging the
RCM3720 module itself.
The RCM3720 Prototyping Board is shown below in Figure B-11, with its main features
identified.
RCM3720
Module
Connector
Backup
Battery
RCM3720 PROTOTYPING BOARD
CX1
RCM3720 Module
Extension Header
RX7
RX8
RX9
RX10
SMT Prototyping
RX11
RX12
RX13
RX14
RX15
RX16
RabbitCore RCM3700 User's Manual
Surface-Mount
RS-232 Chip
C13 C10
U3
C14
C12
R6
R8
J5
C53
J2
CX5
CX3
CX7
UX7
Through-Hole
CX9
Prototyping Area
CX10
UX8
UX1
Area
CX11
CX12
UX9
UX2
CX13
CX14
UX3
Through-Hole
RS-232 Chip
(leave unstuffed)
Figure B-11. RCM3720 Prototyping Board
Voltage
Regulator
Heat Sink
Power
Input
U2
C7
C2
C9 D1
PC0_TXD
PC2_TXC
PC1/
PG2_RXD
GND
PC3/
PG3_RXC
VIN
J8
C1
GND
RS-232 Header
C5
3
Reset Switch
1
C3
2
C8
DS3
4
C4
R4
U1
1
3
Power LED
2
4
R5
C6
User
1
3
2
4
Switches
+5V
GND
User
LEDs
+5 V and GND
Buses
112
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