Overview

Comaptible with: RouterBOARD RB493 oraz RB493AH.

IP178C    integrates    a    9-port    switch    controller,    SSRAM,    and    8    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  in  0.18um  technology;  they  have  high noise immunity and robust performance.   IP178C 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 as auto-negotiation or forced 10 Mbps/100  Mbps,  full/half  duplex  mode.  Using  an  EEPROM  or  pull  up/down  resistors  on  specific  pins can configure the desired options. Besides      an      8-port      switch      application, IP178C  supports  one  MII/RMII  ports  for  router application, which supports 7 LAN ports and one  WAN  port.  The  external  MAC  can  monitor  or  configure IP178C  by   accessing   MII   registers through SMI. MII/RMII  port  also  can  be  configured  to  be  MAC  mode.  It  is  used  to  interface  an  external  PHY  to  work as an 8+1 switch

Features

• Support 1k MAC address
• 512k bits packet buffer memory
• Support auto-polarity for 10 Mbps
• Support filter/ forward special DA option
• Support broadcast storm protection
• Auto MDI-MDIX option z Support  port  security  option  to  lock  the  first  MAC address
• Support one MII/RMII port, which works at 100 Mbps full duplex for router application
• Support port base VLAN & tag VLAN
• Support CoS z Support SMART MAC function
• Support spanning tree protocol
• Support  max  forwarding  packet  length  1552/  1536 bytes option
• Support 8-level bandwidth control z Support SCA
• Support  two  fiber  ports  with  far  end  fault  function for IP178CH only
• Built in linear regulator control circuit