7
IRDA INFRARED INTERFACE PORT
The IRV-686 SBC contains a built in IrDA infrared interface port which supports Serial Infrared (SIR)
or Amplitude Shift Keyed IR (ASKIR) interfaces. The IrDA port is addressed as COM2 and must be
setup in the BIOS’ Peripheral Setup. When the IrDA port is enabled, the standard COM2 serial port
is disabled. Refer to Appendix D for connector location and pin assignments.
FLASH EPROM BIOS
The IRV-686 SBC contains a 128KB Flash EPROM which contains the Award Plug-n-Play system
BIOS. The Flash EPROM can be programmed on-board with the programming software utility when
a new udated version of the BIOS is released.
E
2
KEY 1K-BIT USER EEPROM
The IRV-686 SBC includes the E
2
Key 1K-bit electrically eraseable memory. This memory is useful for
storing user data such as password, terminal address, configuration parameters, etc. The memory is
configured as 64 words, which can be accessed a word at a time, and uses the parallel port for the
hardware interface. Software utilities are provided on the distribution disk which includes a demo
program, and two C library functions for integrating into your application program.
COOLING FAN CONTROL
The IRV-686 SBC provides connectors for the CPU and chassis cooling fans. These connectors
provide +12VDC at 500ma and a “Fan Rotation” signal input. The fan rotation signal is used by the
system BIOS power management feature. Refer to Appendix D for connector location and pin
assignments.
ATX POWER SUPPLY FEATURES
The IRV-686 SBC provides interface connectors to support ATX power supplies. When using an ATX
power supply, you must connect the +5V “Standby” signal on connector JP3 pins 18 & 20 to +5VDC
on the power supply to enable the standby feature. Connector JP3 pin 17 is used interface to ATX
power supplies that use a momentary switch to control the ON/SLEEP (OFF) function. Pushing the
switch once will toggle between the ON and SLEEP modes; pushing the switch for more than four
seconds will turn the system power off. Refer to Appendix D for connector location and pin
assignments.
