These highly integrated 16- and 24-port gigabit Ethernet (GbE) switches with eight integrated PHYs and an embedded V-Core processor provide OEMs and ODMs a feature rich, system-on-a-chip (SoC). The solution reduces the number of required active components in their existing Web-managed, smart switch systems designs, and it continues to make good on the promises of next-generation security, quality of service (QoS), and savings.
The delivery of the 16-port SparX-G16 and the 24-port SparX-G24 devices marks the next-step in the ongoing evolution of fully integrated, Layer 2 GbE switch IC and SoC solutions pioneered by Vitesse Semiconductor. As with other Vitesse SoCs already in full production, the new devices deliver advanced QoS features such as differentiated service code point (DSCP) remarking, which permits enterprise network managers and service providers to more accurately manage the priority of traffic based on service agreements with their customers. This functionality also decreases the threat of internal and external security breaches through packet filtering based on Source IP, ARP, and TCP/UDP filters.
In addition, the devices offer flexible and configurable rate shaping for both ingress and egress directions to enable enforcement of pre-negotiated bandwidth levels; and up to 8,000 IP Multicast group entries for applications such as video distribution.
The SparX devices perform equally well in applications for the Small Office Home Office (SOHO), Small-Medium Business (SMB), and Small-Medium Enterprise (SME) desktop switches, as well as consumer wireless and DSL broadband routers.
Optimized for applications where high port density, low cost, and flexible QoS are required, use of the SparX-G16 and SparX-G24 drastically simplifies the designs of systems that would be otherwise burdened with external CPUs, additional external PHYs, and multi-component line termination schemes.
Their value-added features, such as packet filtering, fine granularity rate shaping, rich entries of IP Multicast and processor-based address learning, exceed current Web Smart switch requirements, providing OEMs and ODMs with advanced features without requiring what, up to now, has meant a costly jump to enterprise class silicon. This is achieved through the on-chip V-Core processor which reduces the per instruction clock cycles from 12 to 4 compared with a traditional 8051 processor. This, in turn, eliminates the need for an external CPU altogether.
To illustrate the board and cost savings achieved when using the integrated switch-plus-copper-PHY technology of the SparX devices, an engineer developing a 24-port design that would traditionally require a seven or eight chip solution along with additional power and ground plane provisions, would only need one SparX-G24 IC and two Vitesse Octal PHYs to deliver the same design. In addition to saving money, it drastically shortens time-to-market.
The SparX devices offer sophisticated QoS features, including four queues per port with per-queue traffic shaping and policing, IPv4 and IPv6 classification capabilities, and the ability to carry consumer-quality VoIP. Other features include 802.1x authentication, Layer 2 through Layer 4 link aggregation, and VLAN support, including Q-in-Q double VLAN tagging, and wire-speed MAC address learning.
Additionally, these devices include all keystone features and benefits of the SparX series of single-chip SoCs such as:
- Less than 600 mW per port. Each integrated 10/100/1000 BASE-T PHY and Switch port dissipates approximately 25% less power overall than the competition’s multi-chip solutions.
- Reduction in the number of voltage supply rails to only two, lowering the cost for the system power supply circuitry and enables the use of fewer PCB layers in the design overall.
- Elimination of the need for external CPUs and memory through the integration of Octal PHYs, switch fabric, MACs, buffer memory, and 8051 compatible processor. This achieves a 50% component reduction over competing solutions. It simplifies designs and reduces product time-to-market.
Availability and pricing
Currently sampling to customers worldwide, the VSC7389 (16-port) and VSC7390
(24-port) switch SoCs are available in low cost, PBGA (plastic ball grid array) packaging. Budgetary volume pricing is $48 USD for the 16-port device and $64 USD for the 24-port. For more information visit www.vitesse.com/products/product.php?number=VSC7390.