Micrel, Inc. KS8999 • 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 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 January 2005 Ordering Information 2 Part Number Temp Range Package KS8999 0°C to +70°C 208-Pin PQFP KS8999I –40°C to +85°C 208-Pin PQFP KSZ8999 0°C to +70°C 208-Pin PQFP KSZ8999I –40°C to +85°C 208-Pin PQFP KS8999
