System Overview
ROBO-8920VG2 User’s Manual
1-5
1.4 System
Architecture
ROBO-8920VG2 adopts Intel dual-processor server chipset, MCH (Memory
Controller Hub) – E7520, and ICH (I/O Controller Hub) – 6300ESB. E7520 supports
Intel Xeon processor LV, ECC & registered DDR2 400 system memory up to 8GB on
four DIMM sockets, and three configurable PCI Express x8 links. The PCI Express
link was configured as four PCI Express x4 and one PCI Express x8 thru BIOS. One
PCI Express x4 was used to equipped Intel 82571 Dual Gigabit Ethernet Controller
which takes advantage of short route to processor and memory to increase it
performance. The other three PCI Express x4 and PCI Express x8 links are routed
to gold finger for external expansion.
6300ESB is special chipset of Intel IPD which supports dual PCI buses, one bus was
design to support external PCI devices and the other PCI bus was solely for on-
board display controller – ATI Radeon 7000. ATI Radeon 7000 default equipped
with 32MB DDR memory on-board and scalable to expand to 64MB for higher
memory resolution and frequency support. Default configuration of display
interface is one VGA connector on bracket, and it can be extended to have 2
nd
VGA
or DVI-D extension. The ICH also features SATA, IDE, USB and LPC (Low Pin
Count) interface for storage devices and Super I/O connections.
Super I/O – SMSC SCH5017 on LPC provides I/O interfaces such as PS/2
keyboard/mouse, dual serial ports, one parallel port, one FDD channel and
functions like WatchDog timer and Hardware Monitoring.
