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B.4.8 Other Prototyping Board Modules
An optional LCD/keypad module is available that can be mounted on the Prototyping
Board. The signals on headers LCD1JB and LCD1JC will be available only if the LCD/
keypad module is installed. Refer to Appendix C, "LCD/Keypad Module," for complete
information.
Rabbit's SF1000 series serial flash may be installed in the socket labeled J11. The J11
interface is enabled in software by setting PD2 = 0. Header JP3 must have pins 2–3 jum-
pered when using the J11 interface. Note that the RabbitNet port and the J11 interface can-
not be used simultaneously.
B.4.9 Quadrature Decoder
Four quadrature decoder inputs are available on screw-terminal header J5. To use the PF0
input from the Rabbit microprocessor, which goes to the QD1B input, remember to recon-
figure the jumper on header JP3 to jumper pins 1–2.
Additional information on the use of the quadrature Decoders on Parallel Port F is pro-
vided in the Rabbit 3000 Microprocessor User's Manual.
B.4.10 Stepper-Motor Control
The Prototyping Board can be used to demonstrate the use of the RCM3365/RCM3375 to
control a stepper motor. Stepper motor control typically directs moves in two orthogonal
directions, and so two sets of stepper-motor control circuits are provided for via screw-
terminal headers J3 and J4.
In order to use the stepper-motor control, install two Texas Instruments L293DN chips at
locations U2 and U3 (shown in Figure B-10). These chips are readily available from your
favorite electronics parts source, and may be purchased through our
number 660-0205.
/IOWR
PG5
PG7
PE1
PE4
PE6
PF7
PF5
PB7
PB5
PB4
PB3
PB2
PB0
/RES_OUT
RCM3300
PROTOTYPING
BOARD
ACT
LINK
PD7
PD6
PD3
PD2
PD5
PD4
PG3
PG2
PG1
PG0
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
PF0
PF1
PF2
PF3
PA0
PA1
PA2
PA3
Q1
Q2
JA
PA4
PA5
PA6
PA7
STAT
GND
R25
R26
R27
R28
J9
Q6
R49
CORE
S1
S2
S3
RESET
Figure B-10. Install Four-Channel Push-Pull Driver Chips
96
R1
J8
D1
GND
NC
GND
+3.3 V
VBT
VRAM
C1
/RES
SMODE1
C2
D2
SM0
/IORD
PG4
L1
L293D
PG6
H-DRIVER
PE0
C4
PE3
R13
U1
PE5
J10
R12
OUT
OUT
00
01
02 03
04 05
06
07
R 6 7
RP1
RP2
C8
PB6
R 6 8
R 6 9
U4
R 7 0
U5
R16
R15
+5 V
CORE MODULE
GND/EGND
+3.3 V
RX13
CX1
RX14
RX15
UX1
DX1
SO20W
U8
CX2
DX2
C16
R21
R22
R23
R24
UX2
SO20W
Q3
Q4
U9
J13
JB
R35
R36
C22
J12
C23
R50
JP5
R38
D4
D5
D6
D7
C24
C26
J14
DS2 DS3 DS4 DS5 DS6
TxE
RxE GND
TxF
RxF 485+ GND 485–
R52 R53
PF0_CLKD
PF0_QD
C3
U3
U2
L293D
H-DRIVER
R14
C5
BT1
+5 V
GND
GND
+3.3 V
RX16
RX17
R39
J15
RX18
UX4
LCD1JA
UX5
C19
R42
R40
K 1
U11
U12
U10
D 8
C29
K E Y PA D D I S P L AY B O A R D
Q5
L C D 1 J B
L C D 1 J C
RabbitCore RCM3365/RCM3375
Web store
as part
R60 R61
U7
RABBITNET
R8 U6 C6
R9
J11
J16
J17
C30
R47
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Troubleshooting
