IDT1893BFILF IDT, Integrated Device Technology Inc, IDT1893BFILF Datasheet - Page 32
IDT1893BFILF
Manufacturer Part Number
IDT1893BFILF
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.IDT1893BFILF.pdf
(138 pages)
Specifications of IDT1893BFILF
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6.1 Functional Block: Media Independent Interface
ICS1893BF, Rev. E, 8/11/09
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).
2. An interface between the PHY (the ICS1893BF) and an STA (Station Management entity). The
The ICS1893BF Management Register set (discussed in
of the following:
•
•
•
Basic Management registers.
As defined in the ISO/IEC 8802-3 standard, these registers include the following:
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.
– Control Register (register 0), which handles basic device configuration
– Status Register (register 1), which reports basic device capabilities and status
This MAC-PHY part of the MII consists of three subcomponents:
a. A synchronous Transmit interface that includes the following signals:
b. A synchronous Receive interface that includes the followings signals:
c. A Media Status or Control interface that consists of a Carrier Sense signal (CRS) and a Collision
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 Data Sheet - Release
Detection signal (COL).
ICS1893BF Management Register set
(1) A data nibble, TXD[3:0]
(2) A delimiter, TXEN
(3) A clock, TXCLK
(1) A data nibble, RXD[3:0]
(2) An error indicator, RXER
(3) A delimiter, RXDV
(4) A clock, RXCLK
Copyright © 2009, IDT, Inc.
All rights reserved.
32
Chapter 7, “Management Register
Chapter 6 Functional Blocks
Set”) consists
August, 2009
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