DP83953

www.DataSheet4U.com DP83953 (RIC2A) Repeater Interface Controller with Security Features, Internal Drivers and Integrated Filters PRELIMINARY March 1998 DP83953 (RIC2A) Repeater Interface Controller with Security Features, Internal Drivers and Integrated Filters General Description The DP83953 Repeater Interface Controller with Security Features and Integrated Transmit Filters (RIC2A) is an enhanced version of the DP83952 Repeater Interface Controller with Security Features (RIC II). The RIC2A integrates driver and filter circuitry into the RIC II design. The functionality of the RIC2A is essentially similar to the RIC II, but the pin definitions have been modified to reflect the added integrated drivers and filters. Additionally, the power and ground pin locations have been rearranged. Therefore, the RIC2A is not a drop in replacement for the RIC ll. T T T T T T T T The RIC2A is National Semiconductor’s managed repeater T solution designed to comply with IEEE 802.3 Repeater Specifications. Segment partition and jabber lockup protec- T tion state machines are implemented in accordance with T this standard. The RIC2A has thirteen network interface ports available, including an AUI compatible port. The AUI T port incorporates drivers to connect an external MAU using DataSheet4U.com maximum length cable. Similarly, the other twelve interface ports integrate 10BASE-T transceivers with supporting driv- The Security Features er and transmit filter circuitry. (continued) T Prev...