ICS1893AF datasheet(108/137 Pages) RENESAS

tên linh kiện	ICS1893AF

Giải thích chi tiết về linh kiện	3.3-V 10Base-T/100Base-TX Integrated PHYceiver

PDF	137 Pages

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nhà sản xuất	RENESAS [Renesas Technology Corp]

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108 / 137 page

ICS1893AF, Rev D 10/26/04

October, 2004

108

Chapter 9

Pin Diagram, Listings, and Descriptions

ICS1893AF Data Sheet - Release

TXD0,

TXD1,

TXD2,

TXD3

39,

40,

41,

Input

Transmit Data 0–3.

• TXD0 is the least-significant bit and TXD3 is the most-significant bit of

the MII transmit data nibble received from the MAC/repeater.

• The ICS1893AF samples its TXEN signal to determine when data is

available for transmission. When TXEN is asserted, the signals on a

the TXD[3:0] pins are sampled synchronously on the rising edges of

the TXCLK signal.

TXEN

Input

Transmit Enable.

In MII mode:

• The ICS1893AF samples its TXEN signal to determine when data is

available for transmission. When TXEN is asserted, the ICS1893AF

begins sampling the data nibbles on the transmit data lines TXD[3:0]

synchronously with TXCLK. The ICS1893AF then transmits this data

over the media.

• Following the de-assertion of TXEN, the ICS1893AF terminates

transmission of nibbles over the media.

Table 9-8.

MAC/Repeater Interface Pins: Media Independent Interface (MII) (Continued)

Name

Number

Type

Pin Description

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