C
URTISS
-W
RIGHT
C
ONTROLS
E
MBEDDED
C
OMPUTING
814256 V
ERSION
2 F
EBRUARY
2006
A-7
E
LECTRICAL
C
HARACTERISTICS
OF
J3 S
IGNALS
Table A.6 provides the electrical characteristics of the basecard J3 signals.
Note:
Signal details are for the basecard signals only. PMC I/O lines depend on the PMC modules
installed, and are beyond the scope of this document.
T
ABLE
A.5:
J3 Connector Pin Assignments
Pin Number
Row E
Row D
Row C
Row B
Row A
19
SGA0
SGA1
SGA2
SGA3
SGA4
18
AD0-TRX2-
AD0-TRX2+
GND
AD0-TRX0-
AD0-TRX0+
17
AD0-TRX3-
AD0-TRX3+
GND
AD0-TRX1-
AD0-TRX1+
16
BD0-TRX2-
BD0-TRX2+
GND
BD0-TRX0-
BD0-TRX0+
15
BD0-TRX3-
BD0-TRX3+
GND
BD0-TRX1-
BD0-TRX1+
14
RPMPRES
GND
GND
GND
GND
13
NC
NC
NC
NC
12
RC_RXN3
RC_RXP3
GND
RC_TXN3
RC_TXP3
11
RC_RXN2
RC_RXP2
GND
RC_TXN2
RC_TXP2
10
RC_RXN1
RC_RXP1
GND
RC_TXN1
RC_TXP1
9
RC_RXN0
RC_RXP0
GND
RC_TXN0
RC_TXP0
8
RB_RXN3
RB_RXP3
GND
RB_TXN3
RB_TXP3
7
RB_RXN2
RB_RXP2
GND
RB_TXN2
RB_TXP2
6
RB_RXN1
RB_RXP1
GND
RB_TXN1
RB_TXP1
5
RB_RXN0
RB_RXP0
GND
RB_TXN0
RB_TXP0
4
RA_RXN3
RA_RXP3
GND
RA_TXN3
RA_TXP3
3
RA_RXN2
RA_RXP2
GND
RA_TXN2
RA_TXP2
2
RA_RXN1
RA_RXP1
GND
RA_TXN1
RA_TXP1
1
RA_RXN0
RA_RXP0
GND
RA_TXN0
RA_TXP0
T
ABLE
A.6:
J3 Connector Description
Signal Name
Direction
Description
Electrical
Characteristics
SGA[4:0]
Input
Signals are pulled to 3.3v on board. Shelf Geographical
Address signals are used to provide a unique shelf ID
for multiple shelf systems.
GND or floating on
backplane.
ADxx/BDxx
Input/Output Gigabit Ethernet signals, comprised of Port A and Port
B differential pairs.
IEEE 802.3
RAxx/RBxx/RCxx
PMC-
dependent
PMC I/O Signals.
PMC-dependent
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