General Description
The KS8997 contains eight 10/100 physical layer transceivers, eight MAC (Media Access Control) units with an integrated layer 2 switch. The device runs as an eight port integrated switch.
The KS8997 is designed to reside in an unmanaged design not requiring processor intervention. This is achieved through I/O strapping or EEPROM programming at system reset time.

Features
• 8-port 10/100 integrated switch with 8 physical layer transceivers
• 32Kx32 of SRAM on chip for frame buffering
• 2.0Gbps high performance memory bandwidth
• 10BaseT and 100BaseTX modes of operation
• Superior analog technology for reduced power and die size
• Single 2.0V power supply with options for 2.5V and 3.3V I/O
• 900mA (1.80 W) including physical transmit drivers
• Supports port based VLAN
• Supports DiffServ priority, 802.1p based priority or port based priority
• Indicators for link, activity, full/half-duplex and speed
• Unmanaged operation via strapping or EEPROM at system reset time
• Hardware based 10/100, full/half, flow control and auto negotiation
• Wire speed reception and transmission
• Integrated address look-up engine, supports 1K absolute MAC addresses
• Automatic address learning, address aging and address migration
• Broadcast storm protection
• Full-duplex IEEE 802.3x flow control
• Half-duplex back pressure flow control
• Comprehensive LED support
• Supports MDI/MDI-X auto crossover
• Commercial temperature range: 0°C to +70°C
• Supports lead free product (KSZ8997) for commercial temperature range: 0°C to +70°C
• Available in 128-pin PQFP package

Applications
• Small workgroup switches
• VoIP infrastructure switches