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

The Prototyping Board comes with a 220 Ω termination resistor and two 681 Ω bias resis-
tors installed and enabled with jumpers across pins 1–2 and 5–6 on header JP5, as shown
in Figure B-9.
J8
GND
NC
GND
+3.3 V
VBT
VRAM
/RES
SM0
SMODE1
/IORD D2
/IOWR
PG5
PG4 _L1
PG6
PG7
PE0
PE1
PE3
PE4
PE5 _R12
PE6
PF7
PF5
R67
PB7
PB6
R68 ^C8
PB5
PB4
R69
R70
PB3
PB2
PB0
/RES_OUT
C1
U4
RCM3300
PROTOTYPING
BOARD
R1
D1
C2
C3
U2
L293D
H-DRIVER
U1 J10
R13
C4
OUT
OUT 00 01 02 03 04 05 06 07
RP1 RP2
U5
R16
R15
PF0_CLKD
PF0_QD
U3
L293D
H-DRIVER
R14
C5
BT1
R52 R53
R60 R61 _U7
R8 _U6 C6
R9
RABBITNET
J11
ACT
PD7
PD3
PD5
PG3
PG1
PC7
PC5
PC3
PC1
PF0
PF2
PA0
PA2
PA4
PA6
STAT
J9
LINK
PD6
PD2
PD4
PG2
PG0
PC6
PC4
PC2
PC0
PF1
PF3
PA1
PA3
PA5
PA7
GND
S1
RESET
CORE MODULE
GND/EGND
+5 V
GND
CX1
+3.3 _RV _X13
RX14
RX15
RX16
RX17
RX18
UX1
SO20W
UX4
DX1
JA
R25 R26
S2
U8
C16
R21 R22 R23 R24
Q1 Q2 Q3 Q4
JB
R27 R28
J12
R50
D4 D5 D6 D7
Q6
R49
CORE
S3
DS2 DS3 DS4 DS5 DS6
CX2
UX2
SO20W
J13
U9
C22
C23
J14
C24
UX5
DX2
U10
R35
R36
JP5
C26
R38
TxE RxE GND TxF RxF 485+ GND 485–
246
Factory JP5
Default
13 5
+5 V
GND
+3.3 V
R39 J15
+^J163.3 V
485+
LCD1JA
U10
R40
6 ^C19
7 U11
JP5 ^bias
2^R42
1
6 U12
K1
termi-
nation
5
R36
681 W^J17
R38
220 W
D8
485– KEYPAD DISPLAY BOARD
bias ^R37
681 W
C29 C30
Q5
R47
LCD1JB
LCD1JC
Figure B-9. RS-485 Termination and Bias Resistors
For best performance, the termination resistors in a multidrop network should be enabled
only on the end nodes of the network, but not on the intervening nodes. Jumpers on boards
whose termination resistors are not enabled may be stored across pins 1–3 and 4–6 of
header JP5.
B.4.7 RabbitNet Ports
The RJ-45 jack labeled RabbitNet is a clocked SPI RS-422 serial I/O expansion port for
use with RabbitNet peripheral boards. The RabbitNet jack does not support Ethernet con-
nections. Header JP3 must have pins 2–3 jumpered when using the RabbitNet port.
The RabbitNet port is enabled in software by setting PD2 = 1. Note that the RabbitNet
port and the J11 interface cannot be used simultaneously.
User’s Manual
95