quad gmac (npc1140) quad gigabit ethernet media access controller documents & related products documents* there are no related documents at this time. * additional related documentation is available to approved registered users. you may apply for a login account to request access. products framer/mapper npc1140 npc1110 network processor np3700 np3450 np3454 npc2110 np3404 np3400 traffic manager npx5700 switch fabric npx8005 npx5700 npx5500 npx5418 npx5412 storage silicon npx8005 np7510 np7250 np7120 np7020 general description the npc1140 quad gigabit media access controller (quadgmac) gluelessly interfaces to an amcc network processor - the np7250 oc -48 network processor, the np7120 multi-gigabit network processor, or the np7110 gigabit network processor - and to four gigabit ethernet transceiver devices, or gmii-based phy devices, to provide four full-duplex 1 gbps media access controllers. the npc1140 incorporates the system interface, transmit and receive buffers, and gigabit ethernet control functions in a single device. the npc1140 features rmon statistics collection on each of its ports. in addition, the npc1140 has the ability to send flow control status information so that the switch fabric can stop transmission to the port receiving a pause frame indication from the link partner. features ? interfaces to np7250, np7120, np7110 ? compliant with the ieee 802.3z gigabit ethernet standard ? ieee 802.3x flow control ? ansi x3t11 1.25 gbps full -duplex transceiver i/f ? supports ten bit interface (tbi), gmii interface and 4 -bit mii interface (for 10/100 mbps) ? 16 -bit reduced generic gigabit interface (rggi) ? supports padding of short packets on transmit; can receive packet bursts ? rmon statistics exceeding the mib standard ? jtag test support ? synchronous 50/52 mhz operation ? supports multiple gmac port connection to the system with different configurations ? 0.18u cmos technology applications ? mpls switch routers ? core routers ? subscriber services ? voice gateways ? edge router ? optical access ? multi service switches ? remote access servers ? content/web switches, load balancers myamcc | products | company | investor relations | careers | sales & support | contact us | search | site map | help copyright? 2002 applied micro circuits corporation , all rights reserved (v2.7)
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