DP83849IFVSSLASHNOPB datasheet(47/108 Pages) TI2

Part #	DP83849IFVS/NOPB

Description	DP83849IF PHYTER™ DUAL Industrial Temperature with Fiber Support (FX) and Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Tranceiver

PDF	108 Pages

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Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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47 / 108 page

DP83849IF

www.ti.com

SNOSAX8D – JUNE 2009 – REVISED APRIL 2013

The

DP83849IF

requires

single

initialization

sequence

bits

preamble

following

hardware/software reset. This requirement is generally met by the mandatory pull-up resistor on MDIO in

conjunction with a continuous MDC, or the management access made to determine whether Preamble

Suppression is supported.

While the DP83849IF requires an initial preamble sequence of 32 bits for management initialization, it

does not require a full 32-bit sequence between each subsequent transaction. A minimum of one idle bit

between management transactions is required as specified in the IEEE 802.3u specification.

6.6.4

Simultaneous Register Write

The DP83849IF incorporates a mode which allows simultaneous write access to both Port A and B

(RBR, address 17h) in Port A.

As long as this bit remains set, subsequent writes to Port A will write to registers in both ports.

MAC Interface

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DP83849IFVS/NOPB Datasheet(PDF) 47 Page - Texas Instruments