Intel® Server Boards S3200SH/S3210SH TPS Functional Architecture
Revision 1.8 39
Intel Order Number: E14960-009
3.9 GigE Controller 82541PI
The Intel
®
82541 Gigabit Ethernet Controller is a single, compact component with integrated
Gigabit Ethernet Media Access Controller (MAC) and Physical Layer (PHY) function. This
device interfaces with the ICH9 using PCI 32 bit/33MHz. The server board uses this device
along with the integrated ICH9 MAC and external 82566 PHY to provide two Gigabit Ethernet
Ports.
The device has the following features:
Uses PCI 32-bit/33 MHz PCI Interface
IEEE802.3x compliant flow control support
Integrated PHY for full 10/100/1000 Mbps full and half duplex operation
On-board Microcontroller
Wake-On LAN (WOL) Support
IPMI support for server management
3.10 GigE PHY
The Intel
®
82566 Gigabit Ethernet physical layer transceiver (PHY) is a single port device that
supports the integrated ICH9 Media Access Controller (MAC) at 10 Mbps, 100 Mbps, or 1000
Mbps.
The PHY is interfaced to the ICH9 using a high-speed serial interface, the Gigabit LAN Connect
Interface (GLCI). This interface operates using two capacitively coupled differential pairs; one
transmit pair and one receive pair.
The PHY is also interfaced to the ICH9 using a lower frequency LAN Connect Interface (LCI).
The LCI interface operates using eight single ended signals, one clock, three transmit, three
receive, and one reset/sync.
The dual interface, GLCI/LCI allows the interfaces to be dynamically controlled based on the
link speed. In gigabit Ethernet mode, the GLCI is used to transmit and receive data and the LCI
is used for Management Data Input/Output (MDIO). For all other link speeds including no-link
and power-down, the GLCI is electrically idle. In sleeping states S3 – S5, the gigabit Ethernet
link is not supported.
3.11 On-Board Components
3.11.1 Video Support
The server board includes an integrated VGA graphics engine in Integrated BMC that supports
standard VGA drivers with analog display capabilities. The graphics subsystem has 8 MB
memory to support the onboard video controller. The baseboard provides a standard 15-pin
VGA connector at the rear of the system, in the standard ATX I/O opening area. The video
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