Features: · 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)Application` 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.
SpecificationsSupply Voltage ............................................0.3V to 4.0V
Input Voltage ..............................................0.3V to 5.0V
Output Voltage ............................................0.3V to 5.0V
Storage Temperature ...............................-65°C to 150°C
Ambient Operating Temperature (Ta) ............0°C to 70°CDescriptionIP178C 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.
IP178C Data Sheet
