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Datasheet of 20-101-1194 - MODULE RABBITCORE RCM3309 ROHS
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User’s Manual
95
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.
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.
+BKL
T
/CS
LED1
LED3
LED5
GND
GND
A2
A0
D1
D3
D5
D7
RABBITNET
R44
C28
C27
R43
R46
C30
C29
R45
Q5
R48
R47
DS7 RELA
Y
NO1 COM1 NC1 NO2 COM2
NC2
K1
KEYPAD DISPLAY BOARD
D8
LCD1JB
LCD1JC
+V
/RES
LED0
LED2
LED4
LED6
GND
A3
A1
D0
D2
D4
D6
LCD1JA
J16
BD0
BD1
BD2
BD3
BD4
BD5
BD6
BD7
J15
BA0
BA1
BA2
BA3
LCD /CS
RELA
Y
RA
TED
0.5
A
@ 30 V
J17
U12
U11
R42
R41
C20
C19
R40
R39
SERIAL
FLASH/
MODEM
J7
R2
R7
R3 R4 R5 R6
R9
R8 U6
R10
C6
C1
D1
J2
J1
J4
J6
GND IN3 IN2 IN1
IN0 +5V
+5V
QD2A
QD2B
QD1
A Q
D1B G
ND
J5
VM
B
MDB1
MDB2
MDB3
MDB4
VMB+
VMA+
MDA1
MDA2
MDA3
MDA4
VMA
J3
C2
JP1
C3
JP2
GND
GND
VBT
/RES
SM0
/IOWR
PG5
PG7
PE1
PE4
PE6
PF7
PF5
PB7
PB5
PB3
PB0
J8
NC
+3.3 V
VRAM
SMODE1
/IORD
PG4
PG6
PE0
PE3
PE5
PB6
PB4
PB2
/RES_OUT
PF4 PF6 PE7
RCM3300
PROTOTYPING
BOARD
S1
RESET
J9
S2
S3
ACT
PD7
PD3
PD5
PG3
PG1
PC7
PC5
PC3
PC1
PF0
PF2
PA0
PA2
PA4
PA6
STAT
LINK
PD6
PD2
PD4
PG2
PG0
PC6
PC4
PC2
PC0
PF1
PF3
PA1
PA3
PA5
PA7
GND
JA
JB
POWER
GND
+DC
GND
DS1
R1
GND
+DC
D2
C8
L1
R1
1
JP3
R12
C9
C10 C1
1
C12
JP4
J10
RP1 RP2
R14
C5
BT1
C13
U5
R16
R15
R17
00
01
02
03
04
05
06
07
OUT
OUT
C4
R13
U1
U2
L293D
H-DRIVER
L293D
H-DRIVER
U8
R25 R26
R27 R28
J14
C24
U10
R38
R37
R35
C26
JP5
R36
C23
C21
U9
C22
J13
R33 R34
C17
C18
UX5
UX1
SO20W
UX2
SO20W
DX2
C25
J12
R50
Q6
R49
D4 D5 D6 D7
GND
HO4
HO3
HO2
HO1
R29
R30
R31
R32
CORE
DS2 DS3 DS4 DS5 DS6
TxE RxE GND TxF RxF 485+ GND 485
Q1 Q2 Q3 Q4
C16
R24
R23
R22
R21
CORE MODULE
GND/EGND
U4
GND
GND
+3.3 V
+5 V
+3.3 V
+5 V
U3
UX4
DX1
RX16
RX17
RX13
RX14
RX18
RX15
PF0_CLKD
PF0_QD
J11
C7
U7
R18
R19
R20
C14 C15
CX1
CX2
R55 R56 R57 R58
R63 R64 R65 R66
R59
R62
R60 R61
R52 R53
R51
R54
SOT23-6
SOT23-6
R67
R68
R69
R70
U1
R1
R2
R15
C1
J1
U2
C2
R4
JP1
J2
R5
JP2JP3
JP4JP5
R3
Y1
C5
R7
R8
C7
C6
R11
U4
R9
U3
C3
R10
R6
C4
C8
C9
U5
C10
C11
C14
C15
C19
C18
R17
JP7
JP10
JP9
JP8
L1
J3
C22
C23
C27
C33
L2
C35
C12
C16
C20
C21
C24
C13
C17
C25
U6
C28
R18
C37
C29
Y2
R12
R13
R14
C31
C30
R16
C32
C26
C34
C36
R19
U7
R20
R21
C39
C38
R23
R24
R25
R26
1
C44
2
U8
C43
C49
C50
JP12
JP1
1
C41
C42
JP13
R27
Y3
R22
C40
JP14
C46
U9
C45
R29
R28
R30
Q1
R33
DS1
R34
R35
DS2
DS3
SPD
LNK
ACT
FDX
COL
BSY
CE
DS4
R32
RCM39XX
D1
U10
Q2
C47
C48
R31
Factory
Default
R36
681
W
R38
220
W
R37
681
W
485+
485
6
7
termi-
nation
bias
bias
U10
JP5
2
1
6
5
+3.3 V
JP5
3
4
5
6
1
2
102 / 191
102 / 191