VIA Velocity VT6122 Gigabit Ethernet Controller
A single chip Gigabit
Ethernet Controller solution integrating top performance
in a small low power package, customized for the requirements
of the LAN on Motherboard market.
The VIA Velocity™ VT6122 Gigabit Ethernet
controller enables leading-edge performance in a small
14x14mm 128-pin LQFP package, optimized for 32-bit PCI
applications in space-constrained systems. Integrating
a feature laden MAC and Cicada's patented SimpliPHY™ transceiver,
the VT6122 Controller is optimized for space constrained
systems with a low power, low profile design.
Supporting 10/100/1000 Mbps triple-speed and full/half-duplex
capability at all speeds, the integrated Cicada PHY is
fully compliant to IEEE 802.3 (10BASE-T), 802.3u (100BASE-TX),
and 802.3ab (1000BASE-T) standards. With Cicada's proven
SimpliPHY design, VIA Networking's Velocity controllers
feature leading narrow band noise tolerance that delivers
superior performance for real world PCBs and cables.
To minimize host-side CPU utilization, VIA Velocity Gigabit
Ethernet Controllers adopt an adaptive interrupt scheme
to reduce interrupts made to the processor, and maximize
the use of packet bursts for efficient PCI bandwidth usage.
The Velocity controllers can further offload tasks from
the host CPU to improve the overall system performance
with TCP/UDP/IP checksum, and TCP segmentation offloading.
To maximize network management features for the user,
the VIA VT6120 includes sophisticated GigaCheck™
link management software that makes available comprehensive
cable diagnostics, operating analysis, and status information
greatly simplifying network management and troubleshooting.
To reduce system complexity and cost VIA Networking's
Velocity Gigabit Ethernet controllers utilize a single
3.3V power supply, and also support advanced power management
The Velocity VT6122 controller is optimized for 32-bit
PCI client-end applications. Its small form factor 14x14mm,
0.4mm pin-pitch, 128-pin LQFP package provides a low pin
count body size that helps simplify signal routing, minimize
board routing area, resulting in a cost-effective board
implementation. Furthermore, to allow a flexible Gigabit
Ethernet (10/100/1000-Mbps) or Fast Ethernet (10/100-Mbps)
implementations on the same board, VIA Networking offers
a number of configuration options integrating our wide
range of Ethernet IC options.
Note: Layout schematics for the VT6122
co-design applications are available upon request.
Benefits of VIA Velocity
Highly Integrated Solution
10/100/1000 single chip solution that includes checksum
offloading, jumbo frame support, a deep on-chip Tx/Rx
packet buffer, and a full suite of management features
including compliance with IEEE 802.3ab, 802.3x, 802.p,
Integrated SimpliPHY™ Technology
Cicada's integrated SimpliPHYÔ technology ensures outstanding
narrow band noise tolerance for long distance connections.
Ideal for networks where poor connections or substandard
cables are in operation.
With a 0.15um design and 3.3V low voltage required power
supply, VIA Networking's VT6122 Velocity Gigabit Ethernet
controller fully supports the latest ACPI, WoL, and
PCI Power Management standards. The controllers will
also automatically switch from 1000Mbps to 100 or 10Mbps
in standby mode, further reducing power consumption.
GigaCheck™ Software Interface
A full software suite that enables comprehensive cable
diagnostics, operating analysis, and status information.
The software also can provide information regarding
connection speed, link quality, cable analysis, and
VLAN management - all in an easy to use attractive interface.
» Gigabit Ethernet MAC and PHY supporting full
and half duplex 10/100/1000 triple-speed operation
» Leading DSP-based Cicada PHY technology: 10BASE-T,
100BASE-TX, and 1000BASE-T compliant
» Support for PCI v2.2
- VT6122: 32-bit 33/66MHz
» Flow control support (IEEE802.3x)
» Priority Queuing support (IEEE 802.1p)
» Virtual LAN (VLAN) Support (IEEE802.1Q) » Management Features
- MIB counters, SNMP/RMON monitoring
- Wake on LAN (WoL) support
» Ipv4 TCP, IP, and UDP checksum off-loading
» Ipv4 TCP segmentation off-loading capability
» Power Management
- PCI Power Management v1.1, ACPI 2.0
- Wake-up from PRE-ACPI and abnormal shut-down
- Automatic link switch from 1000 to 10
or 100 in standby
» PXE 2.1 remote boot support
» IEEE 1149.1 JTAG built-in
» EEPROM not required
» Complete driver support
- Windows 95, 98(SE), ME, 2000, NT, XP,
- Linux, Novell, Unix, DOS, Boot ROM, Macintosh
» 3.3V I/Os (5V tolerant)
- Integrated 3.3V to 1.5V regulator circuit