KS8993 Просмотр технического описания (PDF) - Micrel

Номер в каталоге

Компоненты Описание

производитель

KS8993

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

Micrel 

KS8993

I/O Descriptions

Group I/O Names

PHY

RXP[1:3]

RXM[1:3]

TXP[1:3]

TXM[1:3]

FXSD[1:3]

VREF[1:3]

ISET

MII

MRXD[0:3]

MRXDV

MCRS

MCOL

MCOLIN

MRXCLK

MTXD[0:3]

MTXEN

MTXER

MTXCLK

SNI

MTXD[0]

MTXEN

MTXCLK

MRXD[0]

MRXDV

MCOL

MRXCLK

IND

LED[1:3][0]

LED[1:3][1]

LED[1:3][2]

Micrel

Active Status Description

Analog

Differential inputs (receive) for connection to media (transformer or fiber module).

Analog

Differential outputs (transmit) for connection to media (transformer or fiber module).

H

Analog

Analog

H

H

H

H

H

Clock

H

H

H

Clock

H

H

Clock

H

H

H

Clock

L

L

L

Fiber signal detect - connect to fiber signal detect output on fiber module. Tie low

for 100TX mode.

Center tap transformer reference for transmit data.

Transmit Current Set. Connecting an external reference resistor to set transmitter

output current. This pin connects a 1% 3kΩ resistor if a transformer of turns ratio of

1:1 is used.

See “Table 2, MII Interconnect” for forward and reverse signal usage.

Four bit wide data bus for receiving MAC frames.

Receive data valid.

Receive carrier sense.

Receive collision detection.

Collision in (for forward operation only).

Receive clock.

Four bit wide data bus for transmitting MAC frames.

Transmit enable.

Transmit error.

Transmit clock.

Serial transmit data.

Transmit enable.

Transmit clock.

Serial receive data.

Receive carrier sense/data valid.

Collision detection.

Receive clock.

Output (after reset).

Mode 0: Speed (low = 100/high = 10).

Mode 1: Reserved.

Mode 2: Collision (toggle = collision during receiving , high = no collision).

Mode 3: Speed (low = 100/high = 10).

Output (after reset).

Mode 0: Duplex (low = full/high = half).

Mode 1: Duplex (low = full/high = half).

Mode 2: Duplex (low = full/high = half).

Mode 3: Reserved.

Output (after reset).

Mode 0: Collision (toggle = collision during receiving , high = no collision).

Mode 1: Transmit Activity (toggle during transmission, high = idle).

Mode 2: 10/link/act (constant low = link, toggle = act, constant high = no link).

Mode 3: Full-Duplex + Collision (constant low = full-duplex, toggle = collision in half.

duplex, constant high = half-duplex with no collision).

KS8993

10

May 2005

Share Link: