KSZ8842-16MBL-EVAL MICREL [Micrel Semiconductor], KSZ8842-16MBL-EVAL Datasheet

KSZ8842-16MBL-EVAL

Manufacturer Part Number

KSZ8842-16MBL-EVAL

Description

2-Port Ethernet Switch with Non-PCI Interface

Manufacturer

MICREL [Micrel Semiconductor]

Datasheet

1.KSZ8842-16MBL-EVAL.pdf (141 pages)

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General Description

The KSZ8842-series of 2-port switches includes PCI and

non-PCI CPU interfaces, and are available in 8/16-bit

and 32-bit bus designs (see

This datasheet describes the KSZ8842M-series of non-

PCI CPU interface chips. For information on the

KSZ8842 PCI CPU interface switches, refer to the

KSZ8842P datasheet.

The KSZ8842M is the industry’s first fully managed, 2-

port switch with a non-PCI CPU interface. It is based on

a proven, 4

compliant with IEEE 802.3u standards. Also an industrial

temperature grade version of the KSZ8842, the

KSZ8842MVLI,

Information).

The KSZ8842M can be configured as a switch or as a

low-latency (≤ 310 nanoseconds) repeater in latency-

critical, embedded or industrial Ethernet applications.

For industrial applications, the KSZ8842M can run in

half-duplex mode regardless of the application.

Functional Diagram

LinkMD is a registered trademark of Micrel, Inc.

Product names used in this datasheet are for identification purposes only and may be trademarks of their respective companies

October 2007

generation, integrated Layer-2 switch,

E E P R O M I/F

P 1 L E D [3 : 0 ]

P 2 L E D [3 : 0 ]

can

P 1 H P A u to

P 2 H P A u to

M D I/ M D I - X

8 , 1 6 , o r 3 2 - b it

G e n e r i c H o s t

I n t e r f a c e

ordered

Ordering

In t e r f a c e

N o n - P C I

C P U

B u s

U n i t

1 0 / 1 0 0 B a s e -

Figure 1. KSZ8842M Functional Diagram

(see

P H Y 1

P H Y 2

T / T X

D r iv e r s

L E D

Information).

C h a n n e l

Q M U

D M A

Ordering

R e g is t e r s

C o n t r o l

R X Q

T X Q

4 K B

2-Port Ethernet Switch with Non-PCI Interface

1 0 / 1 0 0

M A C 1

1 0 / 1 0 0

M A C 2

The KSZ8842M offers an extensive feature set that

includes tag/port-based VLAN, quality of service (QoS)

priority management, management information base

(MIB) counters, and CPU control/data interfaces to

effectively address Fast Ethernet applications.

The KSZ8842M contains: Two 10/100 transceivers with

patented, mixed-signal, low-power technology, 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

an on-chip frame buffer memory.

S w it c h

M A C

H o s t

MQL/MVL/MVLI/MBL

KSZ8842-16/32

Data Sheet Rev 1.9

M a n a g e m e n t

S c h e d u lin g

1 K lo o k - u p

E E P R O M

C o u n t e r s

I n t e r f a c e

B u f f e r s

E n g in e

F r a m e

B u f f e r

M I B

M9999-102207-1.9

LinkMD

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