20-101-1051 Datasheet, PDF (102/165 Pages) List of Unclassifed Manufacturers – C-Programmable Core Module with NAND Flash Mass Storage and Ethernet

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 Web store as part
number 660-0205.
J8
GND
NC
GND
+3.3 V
VBT
VRAM
/RES
SM0
SMODE1
/IORD
D2
/IOWR
PG5
PG4
L1
PG6
PG7
PE0
PE1
PE3
PE4
PE6
PE5_R12
PF7
PF5
PB7
PB5
PB3
PB6
PB4
PB2
R67
R68
C8
R69
R70
U4
PB0
/RES_OUT
RCM3300
PROTOTYPING
BOARD
R1
D1
C1
C2
C3
L293D
U2
H-DRIVER
U1
J10
R13
OUT 00 01 02 03 04 05 06 07
C4
OUT
RP1 RP2
U5
R16
R15
U3
L293D
H-DRIVER
R14
C5
BT1
PF0_CLKD
PF0_QD
R52 R53
R60 R61
U7
R8 U6 C6
R9
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
PA4
PA3
PA5
JA
PA6
PA7
STAT
J9
GND
R25 R26
S1
RESET
S2
GND/EGND
CORE MODULE
CX1
UX1
SO20W
U8
C16
R21 R22 R23 R24
CX2
UX2
SO20W
Q1 Q2 Q3 Q4
JB
R27 R28
R50
Q6
R49
J12
D4 D5 D6 D7
CORE
S3
DS2 DS3 DS4 DS5 DS6
J13
J14
C22
C23
C24
U9
R36
C26JP5
TxE RxE GND TxF RxF 485+ GND 485–
+5 V
GND
+3.3RVX13
RX14
RX15
DX1
RX16
RX17
RX18
UX4
DX2
UX5
U10
R35
R38
LCD1JB
R39 J15
+5 V
GND
+3.3 V
J16
LCD1JA
R40
C19
R42
K1
U11
U12
D8
KEYPAD DISPLAY BOARD
LCD1JC
C29 C30
Q5
R47
J17
RABBITNET
J11
Figure B-10. Install Four-Channel Push-Pull Driver Chips
96
RabbitCore RCM3365/RCM3375