DP83261

Features:

· Full duplex operation with through parity
·Supports all FDDI ring scheduling classes (asynchronous, synchronous, restricted asynchronous, and immediate)
· Supports individual, group, short, long and external addressing
· Generates Beacon, Claim and Void frames without intervention
· Provides extensive ring and station statistics
· Provides extensions for MAC level bridging
· Provides separate management interface
· Uses low power microCMOS


Pinout




Specifications

Symbol	Parameter	Conditions	Min	Max	Units
VCC	Supply Voltage		-0.5	7.0	V
VIN	DC Input Voltage		-0.5	VCC + 0.5	V
VOUT	DC Output Voltage		-0.5	VCC + 0.5	V
TSTG	Storage Temperature Range		-65	+150
TL	Lead Temperature	Soldering, 10 sec. (IR or Vapor) (Phase Reflow)		230
	ESD Rating	RZAP e 1.5k, CZAP e 120 pF		800	V

Description

The DP83261 BMAC device implements the Media Access Control (MAC) protocol for operation in an FDDI token ring. The DP83261 BMAC device provides a flexible interface to the BSI-2TM device. The DP83261 BMAC device offers the capabilities described in the ANSI X3T9.5 MAC Standard and several functional enhancements allowed by the Standard. The DP83261 BMAC device transmits, receives, repeats, and strips tokens and frames. DP83261 uses a full duplex architecture that allows diagnostic transmission and self testing for error isolation.

The duplex architecture also allows full duplex data service on point-to-point connections. Management software is also aided by an array of on chip statistical counters, and the ability to internally generate Claim and Beacon frames without program intervention. A multi-frame streaming interface is provided to the system interface device.