The DP83261 BMAC device implements the Media Access Control (MAC) protocol for operation in an FDDI token ring The BMAC device provides a flexible interface to the BSI-2TM device The BMAC device offers the capabilities described in the ANSI X3T9 5 MAC Standard and several functional enhancements allowed by the Standard The BMAC device transmits receives repeats and strips tokens and frames It 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