Ampro Corporation COM 830 - Manual (Page 20)

Chapter 2 Specifications
14 Reference Manual COM 830
PCI Express™
The COM 830 offers 6x x1 PCI Express lanes via the Intel 82801GHM (ICH7M-DH), which can be
configured to support PCI Express edge cards or ExpressCards. One of the six x1 PCI Express lane is
utilized by the onboard Ethernet controller therefore there are only 5x x1 PCI Express lanes available on the
A,B connector row. The PCI Express interface is based on the PCI Express Specification 1.0a.
ExpressCard™
The COM 830 supports the implementation of ExpressCards, which require the dedication of one USB port
and one PCI Express lane for each ExpressCard used.
Graphics Output (VGA/CRT)
The COM 830 graphics are driven by an Intel Graphics Media Accelerator 950 engine, which is
incorporated into the Intel 82945GM chipset found on the COM 830. This graphic engine offers
significantly higher performance than the Intel Extreme Graphics Engine found on other Intel chipsets.
LCD
The Intel 82945GM chipset, found on the COM 830, offers an integrated dual channel LVDS interface that
is connected to Display Pipe B.
TV-Out
TV-Out support is integrated into the Intel 82945GM chipset and is supported on both Display Pipe A and
Pipe B.
Power Control
PWR_OK
Power OK from main power supply. A high value indicates that the power is good. Using this input is
optional. Through the use of an internal monitor on the +12V ± 5% input voltage and/or the internal power
supplies the COM 830 module is capable of generating its own power-on reset. According to the COM
Express PWR_OK is a 3.3V signal.
The COM 830 provides support for controlling ATX-style power supplies. When not using an ATX power
supply then the COM 830's pins SUS_S3/PS_ON, 5V_SB, and PWRBTN# should be left unconnected.
SUS_S5#/PS_ON#
The SUS_S5#/PS_ON# (pin A24 on the A-B connector) signal is an active-high output that can be used to
turn on the main outputs of an ATX-style power supply. In order to accomplish this the signal must be
inverted with an inverter/transistor that is supplied by standby voltage and is located on the carrier board.
PWRBTN#
When using ATX-style power supplies PWRBTN# (pin B12 on the A-B connector) is used to connect to a
momentary-contact, active-low debounced pushbutton input while the other terminal on the pushbutton
must be connected to ground. This signal is internally pulled up to 3V_SB using a 10k resistor. When
PWRBTN# is asserted it indicates that an operator wants to turn the power on or off. The response to this
signal from the system may vary as a result of modifications made in BIOS settings or by system software.