Venice Single Board Computer Operating Manual
Input Power Barrel Jack (J19)
Power is normally applied through the barrel jack or through the GbE Ethernet
connector in a Passive or 802.3af Compatible Power over Ethernet configuration. The
barrel jack should have the positive input voltage on the inner sleeve and ground on the
outer sleeve. The barrel jack inner pin diameter is 2.5mm. The input voltage
requirements are given in Section 3. The mating connector is a G/S SR2048A-R,
available from Jameco as part number 190538PS. The schematic symbol representing
this configuration is shown below.
Barrel Jack Schematic
Gigabit Ethernet Port and Active PoE Input Power (J20)
The GbE Ethernet Port is available through a standard 8-pin RJ45 connector. The
connector supports both passive and 802.3af Compatible Power over Ethernet. The
power inputs are diode protected to prevent back feeding with other power inputs. The
RJ45 connector can be replaced with a 8-pin dual-row 2mm header as an ordering
option. The input voltage requirements are given in the Specifications section.
Pin
Signal
Power
1
TX1+/RX1+
PoE V+
2
TX1-/RX1-
PoE V+
3
TX2+/RX2+
PoE Ground
4
TX3+/RX3+
PoE V+
5
TX3-/RX3-
PoE V+
6
TX2-/RX2-
PoE Ground
7
TX4+/RX4+
PoE Ground
8
TX4-/RX4-
PoE Ground
GbE Ethernet Port Connector
Gigabit Ethernet Port and Passive PoE Input Power (J21)
The Gigabit Ethernet Port is available through a standard 8-pin RJ45 connector. The
connector also supports Passive Power over Ethernet. The power inputs are diode
protected to prevent back feeding with other power inputs. The Passive PoE
architecture is discussed in more detail in Section 1 and the input voltage requirements
are listed in Section 3. The RJ45 connector can be replaced with an 8-pin dual-row
2mm header as an ordering option.
Pin
Signal
Passive Power
1
TX1+/RX1+
PoE V+
2
TX1-/RX1-
PoE V+
3
TX2+/RX2+
PoE Ground
4
TX3+/RX3+
PoE V+
5
TX3-/RX3-
PoE V+
GATEWORKS.COM 3026 S. Higuera St San Luis Obispo, CA 93401
P:(805)781-2000
25 of 34
