IP178C |
RFQ for IP178C Required Field |
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| Product | Manufacturers | Pack | D/C |
| IP178C | - | QFP128 | 06+ |
IP178C integrates a 9-port switch controller,SSRAM, and 8 10/100 Ethernet transceivers.Each of the transceivers complies with theIEEE802.3, IEEE802.3u, and IEEE802.3xspecifications. The transceivers are designed inDSP approach in 0.18um technology; they havehigh noise immunity and robust performance.
IP178C operates in store and forward mode. Itsupports flow control, auto MDI/MDI-X, CoS, portbase VLAN, bandwidth control, DiffServ, SMARTMAC and LED functions, etc. Each port can beconfigured as auto-negotiation or forced 10Mbps/100 Mbps, full/half duplexmode. Using anEEPROM or pull up/down resistors on specificpins can configure the desired options.
Besides an 8-port switch application, IP178Csupports one MII/RMII ports for router application,which supports 7 LAN ports and one WAN port.The external MAC can monitor or configureIP178C by accessing MII registers through SMI.
MII/RMII port also can be configured to be MACmode. It is used to interface an external PHY towork as an 8+1 switch.
Typical Application |
Features |
| ` An 8-port switch application - If pin 53 EXTMII_EN is pulled low, then MII/ RMII interface is disabled. IP178C is not connected to a CPU and works as an 8-port switch. The ninth switch port MAC8 is unused in this application.` A 9-port switch application - If pin 53 EXTMII_EN is pulled high, then MII/ RMII interface is enaled. The ninth switch port MAC8 is connected to a PHY through the MII/RMII interface. IP178C works as a 9-port switch. Because IP178C doesn't access the MII register of the external PHY through SMI, MII/RMII interface should be MAC mode and full duplex in this application.` An 8-port router application - IF pin 53 EXTMII_EN is pulled high, then MII/RMII interface is enabled. IP178C is connected to a CPU through MII/ RMII interface. IP178C works as an 8-port router. MII/RMII interface is set to be PHY mode and 100 Mbps full duplex in this application. | · Support 1k MAC address· Support auto-polarity for 10 Mbps· Support filter/ forward special DA option· Support broadcast storm protection· Auto MDI-MDIX option· Support port security option to lock the first MAC address· Support one MII/RMII port, which works at 100 Mbps full duplex for router · Support port base VLAN & tag VLAN· Support CoS· Support SMART MAC function· Support spanning tree protocol· Support max forwarding packet length 1552/ 1536 bytes option· Support 8-level bandwidth control· Support SCA· Built in linear regulator control circuit· Support Lead Free package (Please refer to the Order Information) |
