KS8999 Просмотр технического описания (PDF) - Micrel

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производитель

KS8999

Integrated 9-Port 10/100 Switch with PHY and Frame Buffer

Micrel 

Micrel, Inc.

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

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

Ordering Information

Part Number

Temp Range

KS8999

0°C to +70°C

KS8999I

–40°C to +85°C

KSZ8999

0°C to +70°C

KSZ8999I

–40°C to +85°C

Package

208-Pin PQFP

208-Pin PQFP

208-Pin PQFP

208-Pin PQFP

January 2005

2

KS8999

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