General Description
●The KS8999 contains eight 10/100 physical layer transceivers, nine MAC (Media Access Control) units with an integrated layer 2 switch. The device runs in two modes. The first mode is an eight port integrated switch and the second is as a nine port switch with the ninth port available through an MII (Media Independent Interface).
●Features
●• 9 port (8+1) 10/100 integrated switch with eight physical layer transceivers and one MII/SNI interface
●• Advanced Ethernet Switch with internal frame buffer
●― 128K Byte of SRAM on chip for frame buffering
●― 2.0Gbps high performance memory bandwidth
●― Wire speed reception and transmission
●― Integrated address look-up engine, supports 1K absolute MAC addresses
●― Automatic address learning, address aging and address migration
●• Advanced Switch Features
●― Supports 802.1p priority and port based priority
●― Supports port based VLAN
●― Supports 1536 byte frame for VLAN tag
●― Supports DiffServ priority, 802.1p based priority or port based priority o broadcast storm protection
●• Proven transceiver technology for UTP and fiber operation
●― 10BaseT, 100BaseTX and 100BaseFX modes of operation
●― Supports for UTP or fiber on all 8-ports
●― Indicators for link, activity, full/half-duplex and speed
●― Hardware based 10/100, full/half, flow control and auto-negotiation
●― Individual port forced modes (full duplex, 100BaseTX) when auto-negotiation is disabled
●― Full-duplex IEEE 802.3x flow control
●― Half-duplex back pressure flow control
●• Supports MDI/MDI-X auto crossover
●• External MAC interface (MII or 7-wire) for router applications
●• Unmanaged operation via strapping or EEPROM at system reset time (see Reset Reference Circuit section)
●• Comprehensive LED support
●• Single 2.0V power supply with options for 2.5V and 3.3V I/O
●• 900 mA (1.80W) including physical transmit drivers
●• Supports both commercial and industry temperature
●― Commercial temperature range: 0°C to +70°C (KS8999)
●― Industrial temperature range: –40°C to +85°C (KS8999I)
●• Supports lead free products:
●― Commercial temperature range: 0°C to +70°C (KSZ8999)
●― Industrial temperature range: –40°C to +85°C (KSZ8999I)
●• Available in 208-pin PQFP package
