KSZ8895RQI datasheet(2/116 Pages) MICREL

Part #	KSZ8895RQI

Description	Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface

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Manufacturer	MICREL [Micrel Semiconductor]

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Micrel, Inc.

KSZ8895MQ/RQ/FMQ

September 2011

2

M9999-091911-1.4

Features

Advanced Switch Features



IEEE 802.1q VLAN support for up to 128 VLAN groups

(full-range 4096 of VLAN IDs).



Static MAC table supports up to 32 entries.



VLAN ID tag/untag options, per port basis



IEEE 802.1p/q tag insertion or removal on a per port

basis based on ingress port (egress).



Programmable rate limiting at the ingress and egress

on a per port basis.



Jitter-free per packet based rate limiting support.



Broadcast storm protection with percentage control

(global and per port basis).



IEEE 802.1d rapid spanning tree protocol RSTP

support.



Tail tag mode (1 byte added before FCS) support at

Port 5 to inform the processor which ingress port

receives the packet.



1.4Gbps high-performance memory bandwidth and

shared

memory-based

switch

fabric

with

fully

non-blocking configuration.



Dual MII with MAC5 and PHY5 on port 5, SW5-

MII/RMII for MAC 5 and P5-MII/RMII for PHY 5.



Enable/Disable option for huge frame size up to 2000

Bytes per frame.



IGMP v1/v2 snooping (Ipv4) support for multicast

packet filtering.



IPv4/IPv6 QoS support.



Support

unknown

unicast/multicast

address

and

unknown VID packet filtering.



Self-address filtering.

Comprehensive Configuration Register Access



Serial management interface (MDC/MDIO) to all PHYs

registers and SMI interface (MDC/MDIO) to all registers.



High speed SPI (up to 25MHz) and I2C master

Interface to all internal registers.



I/0 pins strapping and EEPROM to program selective

registers in unmanaged switch mode.



Control registers configurable on the fly (port-priority,

802.1p/d/q, AN).

QoS/CoS Packet Prioritization Support



Per port, 802.1p and DiffServ-based.



1/2/4-queue QoS prioritization selection.



Programmable weighted fair queuing for ratio control.



Re-mapping of 802.1p priority field per port basis.

Integrated Five-Port 10/100 Ethernet Switch



New generation switch with five MACs and five PHYs

with fully compliant with IEEE 802.3u standard.



PHYs designed with patented enhanced mixed-signal

technology.



Non-blocking switch fabric assures fast packet delivery

by utilizing a 1K MAC address lookup table and a store-

and-forward architecture.



On-chip 64Kbyte memory for frame buffering (not

shared with 1K unicast address table).



Full duplex IEEE 802.3x flow control (PAUSE) with

force mode option.



Half-duplex back pressure flow control.



HP Auto MDI/MDI-X and IEEE Auto crossover support.



SW-MII interface supports both MAC mode and PHY

mode.



7-wire serial network interface (SNI) support for legacy

MAC.



Per port LED Indicators for link, activity, and 10/100

speed.



Register port status support for link, activity, full/half

duplex and 10/100 speed.



On-chip terminations and internal biasing technology

for cost down and lowest power consumption.

Switch Monitoring Features



Port mirroring/monitoring/sniffing: ingress and/or egress

traffic to any port or MII.



MIB counters for fully compliant statistics gathering 34

MIB counters per port.



Loop-back support for MAC, PHY and remote

diagnostic of failure.



Interrupt for the link change on any ports.

Low Power Dissipation



Full-chip hardware power-down.



Full-chip software power-down and per port software

power down.



Energy-detect mode support < 100mW full chip-power

consumption when all ports have no activity.



Very low full chip power consumption (<0.5W), without

extra power consumption on transformers.



Dynamic clock tree shutdown feature.



Voltages: Single 3.3V supply with 3.3V VDDIO and

Internal 1.2V LDO controller enabled, or external 1.2V

LDO solution.

–

Analog VDDAT 3.3V only.

–

VDDIO support 3.3V, 2.5V and 1.8V.

–

Low 1.2V core power .



0.13µ CMOS technology.



Commercial temperature range: 0°C to +70°C.



Industrial Temperature Range: -40°C to +85°C.



Available in 128-pin PQFP, lead-free package.

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