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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VSC7440 датащи(PDF) 19 Page - Microsemi Corporation |
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VSC7440 датащи(HTML) 19 Page - Microsemi Corporation |
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19 / 444 page  Product Overview VMDS-10492 VSC7440 Datasheet Revision 4.2 2 2 Product Overview The VSC7440 SparX-IV-34™ SMB/SME/Industrial Ethernet switch provides a rich set of Enterprise and Industrial Ethernet switching features such as advanced TCAM-based VLAN and QoS processing that enable delivery of differentiated services, security through TCAM-based frame processing using Versatile Content Aware Processor (VCAP), protection switching, IEEE 1588v2 precision time protocol, and synchronous Ethernet. IPv4/IPv6 Layer 3 (L3) routing is supported with up to 1K IPv4 (256 IPv6) unicast LPM entries and up to 512 IPv4 (128 IPv6) L3 multicast groups. L3 security features include source guard and reverse path forwarding (uRPF) tasks. A powerful 500 MHz MIPS-24KEc CPU enables full management of the switch and advanced Enterprise and Industrial applications. The device targets managed Layer 2 and Layer 3 equipment in SMB, SME, and industrial applications where high port count 1G switching with 10G aggregation links is required. The VSC7440 SparX-IV-34™ device is a 34 Gbps SMB/SME/Industrial Ethernet switch with up to 10 ports supporting the following main port configurations: • 4 × 1G SGMII ports + 4 × 2.5G SGMII ports + 2 × 10G SFI ports • 4 × 1G SGMII ports + 6 × 2.5G SGMII ports • 10 × 1G SGMII ports • Two of the 1G SGMII ports are dual-media ports with a choice of 1G SGMII or 1G CuPHY In addition, the device supports one 10/100/1000 Mbps SGMII/SerDes Node Processor Interface (NPI) Ethernet port. 2.1 General Features This section lists the key device features and benefits. 2.1.1 Layer 2 and Layer 3 Forwarding • IEEE802.1Q switch with 4K VLANs and 16K MAC table entries • Push/pop/translate up to three VLAN tags on ingress and egress • RSTP and MSTP support • Fully non-blocking wire-speed switching performance for all frame sizes • IPv4/IPv6 unicast and multicast Layer 2 switching with up to 16K groups and 128 port masks • IPv4/IPv6 unicast and multicast Layer 3 forwarding (routing) with reverse path forwarding (RPF) support • IGMPv2, IGMPv3, MLDv1, and MLDv2 support 2.1.2 Timing and Synchronization • Synchronous Ethernet, with four clock outputs recovered from any port • IEEE 1588-2008 (v2) with nanosecond-accurate time stamping for one-step and two-step clocks • Hardware processing and PTP frame generation 2.1.3 Quality of Service • One megabytes of integrated shared packet memory • Eight QoS classes per port • TCAM-based classification with pattern matching against Layer 2 through Layer 4 information • Dual-rate policers selected by VCAP IS2, eight single-rate priority policers per port, and two single- rate port policers for each port • Flexible 2K ingress QoS mappings and 4K egress QoS mappings for VLAN tags, DSCP values, and MPLS labels • Up to 512 egress VLAN tag operations • Priority-based flow control (PFC) (IEEE 802.1Qbb) • Audio/Video bridging (AVB) with support for time-synchronized, low-latency audio and video streaming services |
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