Digi RCM4000 - Manual (Page 103)

User’s Manual 97
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 RCM4000
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 RCM4000. 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 RCM4000.
The Prototyping Board provides the user with RCM4000 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.
Figure B-4. Prototyping Board Pinout
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 not available from the RCM4010 included in the Development Kit — only the
RCM4000 model has an A/D converter.
J4
J2
J3
+3.3 V
/RST_OUT
/IOWR
VBAT_EXT
PA1
PA3
PA5
PA7
PB1
PB3
PB5
PB7
PC1
PC3
PC5
PC7
PE1
PE3
PE5
PE7
PD1/LN1
PD3/LN3
PD5/LN5
PD7/LN7
VREF
GND
/IORD
/RST_IN
PA0
PA2
PA4
PA6
PB0
PB2
PB4
PB6
PC0
PC2
PC4
PC6
PE0
PE2
PE4
PE6
PD0/LN0
PD2/LN2
PD4/LN4
PD6/LN6
CVT
AGND
AGND CVT LN6IN LN4IN LN2IN LN0IN
VREF LN7IN LN5IN LN3IN LN1IN AGND
RCM4100
Signals
RS-232
Analog
Inputs
RxD
TxD
GND
RxC
TxC
J1
GND + GND