MMC (MMC Networks Inc. ) : ATMS2000

ATM Switch Chipset

MMCs ATMS2000 ATM Switch Engine implements the complete core functionality of a high performance ATM switch, optimized for work group and LAN backbone applications. The Switch is based on MMCs patented ViXTM technology. It offers an extremely low-cost highly-integrated solution, with all the switching functions performed by the chip set. The chip set consists of 4 chips. A total number of 9 chips are needed to implement the complete switch functions of a 16 x 16 155-Mbps-port switch; a total of 16 chips are needed to implement a 32 x 32-ports switch. The only additional components needed to complete the switch are low speed SRAMs, control processor, and standard PHY interface circuitry. The ATMS2000 chip set consists of four components:

• ATMS2001: Memory Access Buffer (MBUF)
• ATMS2002: Port Interface (PIF)
• ATMS2003: Switch Controller 1 (SWC1)
• ATMS2004: Switch Controller 2 (SWC2)

• Non Blocking
• Configurable as either thirty-two 155-Mbps ports, or sixteen 155-Mbps portsEvery four ports may be grouped to form one 622-Mbps port
• Each 155 Mbps port may be divided into three 52-Mbps ports, or into six 25-Mbps ports
• Up to 64K cells total buffering, dynamically allocated (more than 10,000 per port effective buffering)
• Four queues for each 155 Mbps output port, for four levels of priority traffic
• Both VP and VC switching capabilities
• Supports up to 32K input VCs and 32K output VCs with on-chip addressing.
• Expandable to unlimited number
• Supports multicast
• Dedicated CPU port for management and control
• Hooks for external per VC processing (AAL-5 PDU discard, traffic management, policing, accounting, etc.)
• Standard UTOPIA interface to the PHY module
• Snooping capability on the activity of any port (by mirroring to one specific port)
• Requires inexpensive 20ns SRAMs
• 25 MHz operation

Technology:	unknown
Package:	unknown 0 Pin