Athena III User Manual Rev A.03
www.diamondsystems.com
Page
14
4.2.2
Video
LVDS and SDVO from the chipset are provided on I/O connectors. LCD power may be jumper-selected for
+3.3VDC or +5VDC. Backlight power may be jumper-selected for +5VDC or +12VDC. The +12VDC is routed from
the input power connector and is only available if supplied by the customer; it is not generated on board.
An SDVO to VGA converter circuit is provided on the board to offer video display directly on-board. There is only
one SDVO channel available.
4.2.3
Ethernet
Athena III provides a Gigabit Ethernet port derived from an Intel 82574ITMAC/PHY connected via PCIe from
Tunnel Creek. A gigabit magnetic chip and header complete the circuit.
4.2.4
USB
Athena III offers five user accessible USB 2.0 ports. All ports have minimum 500mA per port drive capability with
short circuit / over current and ESD protection on each port. Ports 1-4 are brought out to I/O connectors for user
access, and port 5 is used for a board-mountable USB flashdisk. One USB client port will be available via a utility
connector.
4.2.5
USB Solid State Storage
A separate USB connector is provided for mounting a solid state bootable USB flashdisk module with capacity up
to 8GB.
4.2.6
Serial Ports
Athena III provides four serial ports with varying protocols and signal availability. The SCH3114 provides two of
the serial ports. The other two serial ports are derived from the 16C2850 UART and provide 128 byte transmit /
receive buffers. To maintain Athena II compatibility the 16C2950 ports are assigned to COM3, COM4. The BIOS
supports serial console on COM ports 1 or 2.
4.2.7
Data Acquisition
The SBC provides the following data acquisition capabilities.
Type of I/O
Characteristics
Analog Input
16 single-ended/8 differential inputs, 16-bit resolution
200KHz maximum aggregate A/D sampling rate
Programmable input ranges/gains:
+/-10V, +/-5V, +/-2.5V, +/-1.25V, 0-10V, 0-5V, 0-2.5V
A/D FIFO for reliable high-speed sampling and scan operation
Analog Output
Four analog outputs, 12-bit resolution
±10V, +/-5V, 0-10V, and 0-5V output ranges
Indefinite short circuit protection on outputs
Digital I/O
24 programmable digital I/O, 3.3V and 5V logic compatible
Counter/Timers
One 32-bit counter/timer for A/D sampling rate control
One 16-bit counter/timer for user counting and timing functions
On board I2C flash EEROM is provided for auto-calibration value storage.
4.2.8
PC/104 Expansion Bus
The PC/104 expansion bus enables installation of additional I/O boards. It consists of two stack-through
connectors press-fit onto the board, enabling expansion both above and below the board.