參數(shù)資料
型號(hào)： ICS1893BFLFT
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 60/133頁
文件大小： 0K
描述： PHYCEIVER LOW PWR 3.3V 48-SSOP
標(biāo)準(zhǔn)包裝： 1
系列： PHYceiver™
類型： PHY 收發(fā)器
規(guī)程： MII
電源電壓： 3.14 V ~ 3.47 V
安裝類型： 表面貼裝
封裝/外殼： 48-BSSOP（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 48-SSOP
包裝： 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁面： 1252 (CN2011-ZH PDF)
其它名稱： 800-1017-6
ICS1893BF, Rev. F, 5/13/10
May, 2010
32
Chapter 6 Functional Blocks
ICS1893BF Data Sheet - Release
Copyright 2009, IDT, Inc.
All rights reserved.
6.1 Functional Block: Media Independent Interface
All ICS1893BF MII interface signals are fully compliant with the ISO/IEC 8802-3 standard. In addition, the
ICS1893BF MIIs can support two data transfer rates: 25 MHz (for 100Base-TX operations) and 2.5 MHz
(for 10Base-T operations).
The Media Independent Interface (MII) consists of two primary components:
1. An interface between a MAC (Media Access Control sublayer) and the PHY (that is, the ICS1893BF).
This MAC-PHY part of the MII consists of three subcomponents:
a. A synchronous Transmit interface that includes the following signals:
(1) A data nibble, TXD[3:0]
(2) A delimiter, TXEN
(3) A clock, TXCLK
b. A synchronous Receive interface that includes the followings signals:
(1) A data nibble, RXD[3:0]
(2) An error indicator, RXER
(3) A delimiter, RXDV
(4) A clock, RXCLK
c. A Media Status or Control interface that consists of a Carrier Sense signal (CRS) and a Collision
Detection signal (COL).
2. An interface between the PHY (the ICS1893BF) and an STA (Station Management entity). The
STA-PHY part of the MII is a two-wire, Serial Management Interface that consists of the following:
a. A clock (MDC)
b. A synchronous, bi-directional data signal (MDIO) that provides an STA with access to the
ICS1893BF Management Register set
The ICS1893BF Management Register set (discussed in Chapter 7, “Management Register Set”) consists
of the following:
Basic Management registers.
As defined in the ISO/IEC 8802-3 standard, these registers include the following:
– Control Register (register 0), which handles basic device configuration
– Status Register (register 1), which reports basic device capabilities and status
Extended Management registers.
As defined in the ISO/IEC 8802-3 standard, the ICS1893BF supports Extended registers that provide
access to the Organizationally Unique Identifier and all auto-negotiation functionality.
ICS (Vendor-Specific) Management registers.
The ICS1893BF provides vendor-specific registers for enhanced PHY operations. Among these is the
QuickPoll Detailed Status Register that provides a comprehensive and consolidated set of real-time PHY
information. Reading the QuickPoll register enables the MAC to obtain comprehensive status data with a
single register access.
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