desc-ription: xte-2402g is a low cost, high-performance, wire-speed layer 2 ethernet switch, which has 24 10/100 mbps downstream ports(sssmii) and two 10/100/1000 mbps uplink ports(gmii/tbi). hard segment architecture is used for etth/eodsl applications. compliant with ieee802.1x standards, each port supports rate control function, ranging from 256 kbps, 512 kbps, 1 mbps, 1.5 mbps, 2 mbps, 2.5 mbps, 3 mbps to 100mbps, and network access control function. compliant with ieee 802.3x standards, each 10/100 downstream port supports auto-negotiation. for flow control function, backpressure is supported in half duplex and pause packet in full duplex. xte-2402g provides a 32-bit interface, featuring a maximum speed of 66 mhz, to interoperate with an external cpu. the embedded tables support 384 mac address with the maximum of 16 entries for each downstream port and contain 256 multicast entries with igmp snooping. xte-2402g has internal packet storage buffers, featuring an 83mhz speed and provides trunking by aggregating data flows of two gigabit-ports to enable users to combine two 1000 mbps bandwidths and cr-eate a single virtual bandwidth, which helps to extend bandwidth. for additional flexibility and management capability, xte-2402g supports vlan(virtual lan) tag addition/removal, multicast with igmp(internet group management protocol) snooping, broadcast throttling, and rmon mib(remote monitor management information base) statistics counters on every port. an 83 mhz system clock is adopted for timing reference. xte-2402g is manufactured on a 0.25-micro process and operates from a 2.5v (3.3v i/o) core power and is compliant with 8051, mpc850 series, hitachi sh, and arm7. it is offered in a 256-pin qfp(quad flat pack) package.feature: -24 10/100 mbps downstream ports and two 10/100/1000 mbps uplink ports -sssmii for downstream ports -gmii/tbi for uplink ports-compliant with 8051, mpc850 series, hitachi sh, and arm7 cpu interface.-32 bits cpu interface run up to 66 mhz -auto-negotiation-per rx/tx port rate control ranging from 256 kbps, 512 kbps, 1 mbps, 1.5 mbps, 2 mbps, 2.5 mbps, 3 mbps to 100mbps (1mbps increase) on 24 downstream ports -trunking for giga ports-hard segment architecture for etth/eodsl applications -ieee 802.3x-compliant flow control in full duplex -ieee802.1x-compliant port-based network access control -vlan tag addition or removal -up to 384 mac address entries(16 entries per downstream port) benefit: -eight channel atm-ethernet media converter -flexible for eodsl integrated application -embedded memory for packet/cell buffer -ieee802.3x flow control