ADLINK ETX-Proto - Manual (Page 8)

ETX-Proto User’s Manual Page 8
2 Special Functions
2.1 Secondary Super I/O
ETX-Proto uses the SMSC FDC37C669, an ISA based Super I/O chip to provide COM3,
COM4, LPT2 and FDD2 in addtion to the primary Super I/O on the ETX module. Support for
this secondary I/O is included standard in the BIOS of all ETX modules that support the ISA
bus.
2.2 Carrier Hardware Monitor
A W83782D Winbond H/W monitoring IC provides addtional hardware monitor functions. The
W83782D can be used to monitor several critical hardware parameters of the system that cannot
be monitored by the hardware monitor on the ETX module such as power supply voltages on
the carrier board, fan speeds, and system temperatures.
2.3 Integrated Debug Port
ETX-Proto supports an integrated debug port on board. The port 80 function is implemented with
two CPLD chips on the PCI bus interface.
2.4 Audio Power Amplifier
The onboard stereo audio power amplifier contains two identical amplifiers capable of delivering
6 W per channel of continuous average power into a 4-W load at 10% THD+N or 5 W per channel
at 1% THD+N. The gain of each channel is fixed at 20 dB. The amplifier features a mute/standby
function for power-sensitive applications.
2.5 General Purpose I/O
The F75111R is a low power general purpose IO chip providing 20 GPIO.
Most GPIO pins can be programmed to be power LEDs. Level or pulse modes can be
programmed by registers. Two power-down modes (Manual or Smart) can be selected to
save power and control the total consumption to under 10uA.
The F75111R also includes two sets of watchdog timers. One watchdog timer’s timeout unit
is set to seconds with a range of 0 to 127 seconds. The other Watchdog timer is set to
seconds or minutes and the range is 0 to 256 seconds or minutes.