Overview

Compatible: RouterBOARD RB433 and RB450 series. 

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  DSP  approach  is  utilized  for  designing transceivers with 0.18um technology; they have high noise immunity and robust performance.   IP175C/IP175CH  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/IP175CH 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/IP175CH    can    monitor    and    configure    external PHY.

Features  

• 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
• 384k bits packet buffer memory
• Support auto-polarity for 10Mbps  
• Filter/ forward reserved address option
• Broadcast storm protection  
• Auto MDI-MDIX
• Support three MII/RMII ports
• Support SMI with 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
• Built in linear regulator control circuit
• Low power consumption
• 0.18um, 128-pin PQFP