
Connectors and Pin Assignments 43
Table 3-5 J4 Connector Pin Assignment
where:
LP20_D
n
=
Port
20,
Circuit
D
(A—D)
+
LP21_D
n
=
Port
21,
Circuit
D
(A—D)
+
LP22_D
n
=
Port
22,
Circuit
D
(A—D)
+
LP23_D
n
=
Port
23,
Circuit
D
(A—D)
+
LP24_D
n
=
Port
24,
Circuit
D
(A—D)
+
GND =
Circuit
Ground
ETH0_TXP/N
=
10/100Mbps
TX+
(management
port)
ETH0_RXP/N
=
10/100Mbps
RX+
(management
port)
RXD1
=
Receive
data
(serial
port)
TXD1
=
Transmit
data
(serial
port)
BPIO_A1
=
Backplane
I/O,
optionally
connected
to
+3.3V
(default
is
No
Connect)
BPIO_B1
=
Backplane
I/O,
optionally
connected
to
+3.3V
(default
is
No
Connect)
BPIO_C/D1
=
Backplane
I/O,
optionally
connected
to
+5V
(default
is
No
Connect)
RTM_SENSE
=
RTM
board
status,
when
RTM
is
inserted
Pin
A
B
C
D
E
F
25
LP20_DB—
—
LP20_DD—
GND
24
LP20_DA—
—
LP20_DC—
GND
23
LP21_DB—
—
LP21_DD—
GND
22
LP21_DA—
—
LP21_DC—
GND
21
LP22_DB—
—
LP22_DD—
GND
20
LP22_DA—
—
LP22_DC—
GND
19
LP23_DB—
—
LP23_DD—
GND
18
LP23_DA—
—
LP23_DC—
GND
17
LP24_DB—
—
LP24_DD—
GND
16
LP24_DA—
—
LP24_DC—
GND
15
—
—
—
RXD1
TXD1
GND
14
—
—
—
—
—
GND
13
—
—
—
—
—
GND
12
—
—
—
—
—
GND
11
ETH0_RXP
ETH0_RXN
—
—
—
GND
10
ETH0_TXP
ETH0_TXN
—
—
—
GND
9
—
—
—
—
—
GND
8
—
—
—
—
—
GND
7
—
—
—
—
—
GND
6
—
—
—
—
—
GND
5
—
—
—
—
—
GND
4
—
—
—
—
—
GND
3
—
—
—
—
—
GND
2
RTM_SENSE
—
—
—
—
GND
1
BPIO_A1
BPIO_B1
BPIO_C1
BPIO_D1
—
GND
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