Athena III User Manual Rev A.03
www.diamondsystems.com
Page
21
6.3
Ethernet (J4)
Athena III provides one Gigabit Ethernet port. The I/O connector pinout is designed so that the left column
matches the 10/100 Ethernet pinout on Athena II for backward compatibility with existing Athena II mating cables
and applications. For Gigabit operation all 10 pins are used.
NC
1
2
Key / Cut
DA+
3
4
DA-
DB+
5
6
DB-
DC+
7
8
DC-
DD+
9
10
DD-
Connector type:
Standard 2mm dual row straight pin header with gold flash plating
Connector on board:
Molex 87758-1016 or equivalent
6.4
VGA (J5)
Connector J5 is a 2x4-pin header for connecting a VGA monitor.
Green 1
2 Red
Blue 3
4 Ground
HSYNCE 5
6 DDC data
VSYNC 7
8 DDC clock
Signal
Definition
Ground
Ground return
Red
RED signal (positive, 0.7Vpp into 75 Ohm load)
Green
GREEN signal (positive, 0.7Vpp into 75 Ohm load)
Blue
BLUE signal (positive, 0.7Vpp into 75 Ohm load)
DDC clock/data
Digital serial I/O signals used for monitor detection (DDC1 specification)
HSYNC
Horizontal sync
VSYNC
Vertical sync
Note:
While the DDC serial detection pins are present, a 5V power supply is not provided (the old
“Monitor ID” pins are also not used).
Diamond Systems cable number 6981030 provides a female DB15 connection to interface with a standard RGB
monitor.
J5 VGA Connector (end view)
J4 Ethernet Connector (end view)