KSZ8842-32MQLA6 datasheet, PDF

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KSZ8842-32MQLA6: DescriptionIC switch 10/100 32bit 128pqfp; Categorysemiconductor Analog mixed-signal IC; File Size103KB，2 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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KSZ8842-32MQLA6 Overview

IC switch 10/100 32bit 128pqfp

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www.micrel.com

KSZ8842-16MQL

KSZ8842-32MQL

Product Brief

2-Port Ethernet Switch with

Non-PCI Interface

Description

The KSZ8842-16MQL and KSZ8842-32MQL are the

industry’s ﬁrst 2-port switches with a non-PCI CPU inter-

face. The KSZ8842-16MQL (or -32MQL) is a proven, 4th

generation, integrated, Layer 2 switch that is compliant to

the IEEE802.3u standard.

The KSZ8842-16MQL (or -32MQL) can be conﬁgured

as a low-latency repeater to allow for ‘cut thru’ in latency

critical Embedded or Industrial Ethernet applications. For

industrial automation applications in the repeater mode, the

KSZ8842-16MQL (or -32MQL) runs in half-duplex mode

regardless of the application.

The KSZ8842-16MQL (or -32MQL) offers an extensive

feature set that includes tag/port-based VLAN, QoS priority

management, MAC ﬁltering function, MIB counters, and

CPU control/data interfaces to effectively address both

current and emerging Fast Ethernet applications.

The KSZ8842-16MQL (or -32MQL) contains two 10/100

transceivers with patented mixed-signal low-power technol-

ogy, two media access control (MAC) units, a direct memory

access (DMA) channel, a high-speed non-blocking switch

fabric, a dedicated 1K entry forwarding table, and on-chip

frame buffer memory.

Beneﬁts

Offers all of the features of an integrated Layer 2

managed switch plus:

• Fully compliant to the IEEE802.3u standard

• Repeater mode capabilities to allow for ‘cut-thru’

in latency critical Industrial Ethernet or Embedded

Ethernet applications

• MAC ﬁltering function to ﬁlter unicast packets

• Dynamic buffer memory scheme

– Essential for applications such as Video over IP

where image jitter is unacceptable

• 2-Port switch with ﬂexible 8-, 16- or 32-bit generic

host processor interfaces

• Micrel LinkMD

cable diagnostic capabilities to

determine cable length, diagnose faulty cables, and

determine distance to fault

• HP Auto MDIX crossover with disable and enable

option

• Industrial temperature support: –40

C to +85

(KSZ8842-16MVLI samples available)

• Four priority queues to handle voice, video, data,

and control packets

Block Diagram

HP Auto

MDI/MDI-X

1K Look-up

Engine

10/100

T/TX

PHY 1

10/100

MAC 1

FIFO, Flow Control, VLAN Tagging, Priority

HP Auto

MDI/MDI-X

10/100

T/TX

PHY 2

10/100

MAC 2

Queue

Management

DMA

Channel

Embedded

Processor Interface

Buffer

Management

Non-PCI

CPU

Bus Interface Unit

Frame

Buffers

8,16, 32-bit

Generic

Host Interface

MIB

Counters

Control

Registers

EEPROM

Interface

EEPROM I/F

P1 LED[3:0]

P2 LED[3:0]

LED

Drivers

Note: For an MII/RMII, I

C or SPI interface, use the KSZ8893MQL.

LinkMD is a registered trademark of Micrel, Inc.

Micrel, Inc.

TEL:

1.408.944.0800

FAX:

1.408.474.1000

HTTP://

www.micrel.com

KSZ8842-32MQLA6 Related Products

	KSZ8842-32MQLA6	KS8842-16MQL-EVAL
Description	IC switch 10/100 32bit 128pqfp	eval kit experimental ks8842

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