Using The Prototyping Board - Rabbit RabbitCore RCM4200 User Manual

B.4 Using the Prototyping Board
The Prototyping Board is actually both a demonstration board and a prototyping board. As
a demonstration board, it can be used to demonstrate the functionality of the RCM4200
right out of the box without any modifications to either board.
The Prototyping Board comes with the basic components necessary to demonstrate the
operation of the RCM4200. Two LEDs (DS2 and DS3) are connected to PB2 and PB3,
and two switches (S2 and S3) are connected to PB4 and PB5 to demonstrate the interface
to the Rabbit 4000 microprocessor. Reset switch S1 is the hardware reset for the RCM4200.
The Prototyping Board provides the user with RCM4200 connection points brought out con-
veniently to labeled points at header J2 on the Prototyping Board. Although header J2 is
unstuffed, a 2 × 25 header is included in the bag of parts. RS-232 signals (Serial Ports C
and D) are available on header J4. A header strip at J4 allows you to connect a ribbon cable,
and a ribbon cable to DB9 connector is included with the Development Kit. The pinouts for
these locations are shown in Figure B-4.
RCM4200
The analog signals are brought out to labeled points at header location J3 on the Prototyping
Board. Although header J3 is unstuffed, a 2 × 7 header can be added. Note that analog
signals are only available from the RCM4200 included in the Development Kit — the
RCM4210 model does not have an A/D converter.
User's Manual
J1
J2
GND
+3.3 V
/RST_OUT /IORD
/RST_IN
/IOWR
PA0
VBAT_EXT
PA1 PA2
PA4
PA3
PA5 PA6
PA7 PB0
PB2
PB1
PB3 PB4
PB5 PB6
PC0
Signals PB7
PC1 PC2
PC4
PC3
PC5 PC6
PC7 PE0
PE2
PE1
PE3 PE4
PE5 PE6
PD0/LN0
PE7
PD1/LN1 PD2/LN2
PD3/LN3 PD4/LN4
PD6/LN6
PD5/LN5
PD7/LN7 CVT
AGND
VREF
Figure B-4. Prototyping Board Pinout
J4
TxD
RxD
GND
J3
Analog
Inputs
RxC
TxC RS-232
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