MNDP83950B-VQB Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – REPEATER INTERFACE CONTROLLER

MNDP83950B-VQB REV 0B0
MICROCIRCUIT DATA SHEET
Original Creation Date: 10/24/94
Last Update Date: 02/24/99
Last Major Revision Date: 10/24/94
REPEATER INTERFACE CONTROLLER
General Description
The "RIC" may be used to implement an IEEE 802.3 multiport repeater unit including the
functions defined by the repeater, segment partition, and jabber lockup protection state
machines.
The RIC has an on-chip phase-locked-loop (PLL) for Manchester data decoding, a Manchester
encoder, and an Elasticity Buffer for preamble regeneration.
Each RIC can connect to 13 cable segments via its network interface ports. One port is
fully AUI compatible and is able to connect to an external MAU using the maximum lenght of
AUI cable. The other 12 ports have integrated 10BASE-T transceivers. These transceiver
functions may be bypassed so that the RIC may be used with external transceivers. In
addition, large repeater units, containing several hundred ports may be constructed by
cascading RICs together over an Inter-RIC bus.
The RIC is configurable for specific applications. It provides port status information for
LED array displays and a simple interface for system processors. The RIC posseses
multi-function counter and status flag arrays to facilitate network statistics gathering.
A serial interface, known as the Management Interface is available for the collection of
data in Managed Hub applications.
Industry Part Number
DP83950BVQB
Prime Die
DP63950
NS Part Numbers
DP83950BVQB-MPC
Processing
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Quality Conformance Inspection
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