Viglen VIG556M Manual page 10

Accelerated Graphics Port (AGP)
The Vig556M features both integrated graphics and an AGP port. When using the
integrated graphics then a dynamic portion of the main system memory is used as
video memory. You can also use any AGP video card, with 4x/8x AGP performance.
The Accelerated Graphics Port (AGP) is a high-performance interconnect for
graphic-intensive applications, such as 3D applications. AGP is independent of the
PCI bus and is intended for exclusive use with graphical-display devices. AGP
overcomes certain limitations of the PCI bus related to handling a large amount of
graphics data with the following performance features:
• Pipelined-memory read and write operations that hide memory access
latency.
• Demultiplexing of address and data on the bus for near 100 percent bus
efficiency.
• AC timing for 133 MHz data transfer rates, allowing data throughput of 500
MB/sec.
Realtek 8100C Platform LAN Connect Device
The Realtek 8100C component provides an interface to the back panel RJ-45
connector with integrated LEDs. This physical interface may alternately be provided
via the CNR connector.
The Realtek 8100C provides the following functions:
• Basic 10/100 Ethernet LAN Connectivity
• Supports RJ-45 connector with status indicator LEDs
• Full driver compatibility
• Advanced Power Management support
• Programmable transit threshold
• Configuration EEPROM that contains the MAC address
RJ-45 LAN Connector LEDs
Two LEDs are built into the RJ-45 LAN connector. The following table describes the
LED states when the board is powered up and the LAN subsystem is operating.
Table 1: LAN LED Status
LED Colour
Green
Green
Yellow
Yellow
Yellow
Universal Serial Bus (USB)
The motherboard has four USB ports and a further four can be added via internal
headers; one USB peripheral can be connected to each port. For more than eight
V1.0
LED State
Off
On
Off
On (steady state)
On (brighter and pulsing)
VIG556M Motherboard Manual
Condition
10 Mbit/sec data rate is
selected.
100 Mbit/sec date rate is
selected.
LAN link is not
established.
LAN link is established.
The computer is
communicating with
another computer on
the LAN.
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