AC206-DS03-R datasheet(26/70 Pages) BOARDCOM

26 / 70 page

AC206

Preliminary Data Sheet

07/08/02

B roa dcom

Page 14 Pin Descriptions

Document

AC206-DS05-405-R

Table 6: Reverse Media Independent Interface Pins

Pin Name

Pin #

Type

Description

RvMII_TXD3 (MII_RXD3)

RvMII_TXD2 (MII_RXD2)

RvMII_TXD1 (MII_RXD1)

RvMII_TXD0 (MII_RXD0)

MII Transmit Data. The MAC sources RvMII_TXD[3:0]

synchronous with RvMII_TXCLK when RvMII_TXEN is asserted.

RvMII_TXCLK

(MII_TXCLK)

I,D,S

MII Transmit Clock. Continuous (25 MHz/2.5 MHz) clock output

used by MAC to synchronize RvMII_TXEN, RvMII_TXD[3:0], and

RvMII_TXER.

RvMII_TXEN (MII_RXDV)

MII Transmit Enable. Indicates MAC has presented valid data on

the RvMII_TXD[3:0].

RvMII_RXD3 (MII_TXD3)

RvMII_RXD2 (MII_TXD2)

RvMII_RXD1 (MII_TXD1)

RvMII_RXD0 (MII_TXD0)

I,D

MII Receive Data. The PHY sources RvMII_RXD[3:0]

synchronous with RvMII_RXCLK when RvMII_RXDV is asserted.

RvMII_RXCLK

(MII_RXCLK)

I,D,S

MII Transmit Clock. Continuous (25 MHz/2.5 MHz) clock output

used by MAC to synchronize RvMII_RXDV, RvMII_RXD[3:0], and

RvMII_RXER.

RvMII_RXDV (MII_TXEN)

I,D

MII Receive Data-Valid. PHY has presented valid recovered on

the RvMII_RXD[3:0].

RvMII_CRS (MII_CRS)

I,D

RvMII Carrier Sense. Active when carrier has been sensed.

RvMII_RXER (MII_RXER)

I,D

RvMII Receive Error. Indicates PHY has received invalid symbol

data.

RvMII_COL (MII_COL)

I,D

RvMII Collision Detection. Active when collision is detected.

Table 7: Seven-Wire (Serial Network Interface) Pins

Pin Name

Pin #

Type

Description

SNI_TXD (MII_TXD0)

I,D

Serial Transmit Data. The MAC sources SNI_TXD synchronous

with SNI_TXCLK when SNI_TXEN is asserted.

SNI_TXCLK (MII_TXCLK)

Serial Transmit Clock. Continuous (10 MHz) clock output used

by MAC to synchronize SNI_TXEN and SNI_TXD.

SNI_TXEN (MII_TXEN)

I,D

Serial Transmit Enable. Indicates MAC has presented valid data

on the SNI_TXD.

SNI_RXD (MII_RXD0)

Serial Receive Data. The PHY sources SNI_RXD synchronous

with SNI_RXCLK when SNI_CRS is asserted.

SNI_RXCLK (MII_RXCLK)

Serial Receive Clock. Continuous (10 MHz) clock output used by

MAC to synchronize SNI_CRS and SNI_RXD.

SNI_CRS (MII_CRS)

Serial Carrier Sense. Active when carrier has been sensed.

SNI_COL (MII_COL)

Serial Collision Detection. Active when collision is detected.

AC206-DS03-R 数据表(PDF) 26 Page - Broadcom Corporation.

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