General Description :

IP175C integrates a 6-port switch controller, SSRAM, and 5 10/100 Ethernet transceivers. Each of the transceivers complies with the IEEE802.3, IEEE802.3u, and IEEE802.3x specifications. The transceivers are designed in DSP approach with 0.18um technology; they have high noise immunity and robust performance.

IP175C operates in store and forward mode. It supports flow control, auto MDI/MDI-X, CoS, port base VLAN, bandwidth control, DiffServ, SMART MAC and LED functions, etc. Each port can be configured to auto-negotiation or forced 10M/100M, full/half duplexmode. Using an EEPROM or pull up/down resistors on specified pins can configure the desired options.

Besides a 5-port switch application, IP175C supports three MII/RMII ports for router application, which supports 4 LAN ports, one WAN port and one HOME/PNA or Access point. The external MAC can monitor or configure IP175C by accessing MII registers through SMI0.

MII/RMII port also can be configured to be MAC mode. It is used to interface an external PHY to work as a 5+1 switch. Through SMI1 IP175C can monitor and configure external PHY.

Feature :

• IP175A PCB compatible (pins compatible)
• Built in 6 MAC and 5 PHY
• Each port can be configured to be 10Base-T, 100Base-TX
• 2k MAC address
• Support auto-polarity for 10Mbps
• Filter/forward reserved address option
• Broadcast storm protection
• Auto MDI-MDIX
• Support three MII/RMII ports
• Support SMI MDC up to 12.5 Mhz
• Support tagging & un-tagging
• Support Port base VLAN & tag VLAN
• Support CoS
• Support port security option
• Support SMART MAC function
• Support spanning tree protocol
• Max packet length 1552/1536 bytes
• Support 8-level bandwidth control
• Support Link quality LED for 100Mbps
• Support direct, serial and dual color mode LED
• Support one fiber port with far end fault function for IP175CH only
• Built in linear regulator control circuit
• Low power consumption
• 0.18um, 128 pin PQFP