IEI Technology PICOe-GM45A, User Manual

Page: 42 / 198

PICOe-GM45A Half-Size CPU Card
Page 42
2.6.1.5 Super I/O Fan Speed Controller
The Super I/O fan speed controller enables the system to monitor the speed of the fan.
One of the pins on the fan connector is reserved for fan speed detection and interfaced to
the fan speed controller on the Super I/O. The fan speed is then reported in the BIOS.
2.6.1.6 Super I/O Keyboard/Mouse Controller
The Super I/O keyboard/mouse controller can execute the 8042 instruction set. Some of
the keyboard controller features are listed below:
The 8042 instruction is compatible with a PS/2 keyboard and PS/2 mouse
Gate A20 and Keyboard reset output
Supports multiple keyboard power on events
Supports mouse double-click and/or mouse move power on events
2.6.1.7 Super I/O Parallel Port
The multi-mode high-performance parallel port supports the bi-directional Standard
Parallel Port (SPP), the Enhanced Parallel Port (EPP) and the Extended Capabilities Port
(ECP) modes.
2.7 PCIe Bus Components
2.7.1 PCIe Bus Overview
The PICOe-GM45A supports the following PCIe devices:
Four PCIe x1 expansion cards on a compatible backplane
Two PCIe GbE connections through two Intel® controllers
2.7.2 Intel® ICH9M PCIe Bus Overview
The PICOe-GM45A Intel® ICH9M southbridge PCIe bus is split into one PCIe x4 channel
and two PCIe x1 channels. The PCIe x4 channel is connected to a golden finger on the
bottom of the CPU card. Two PCIe x1 channels are connected to two Intel® 82574L PCIe
Gigabit Ethernet (GbE) controllers.