DP83955A

www.DataSheet4U.com DP83955A DP83956A LERIC LitE Repeater Interface Controller July 1993 DP83955A DP83956A LERIC TM LitE Repeater Interface Controller General Description Specifications enclosed describe both the DP83955 and the The DP83955 56 LitE Repeater Interface Controller DP83956 unless otherwise noted (LERIC) may be used to implement an IEEE 802 3 multiport repeater unit It fully satisfies the IEEE 802 3 repeater speciFor IEEE 802 3 multiport repeater applications which refication including the functions defined by the repeater segquire conformance to the IEEE 802 3 Draft Repeater Manment partition and jabber lockup protection state machines agement options the DP83950 Repeater Interface Controller (RICTM ) is recommended especially for highly-managed The LERIC has an on-chip phase-locked-loop (PLL) for Manchester data decoding a Manchester encoder and an hub requirements Elasticity Buffer for preamble regeneration Features Each LERIC can connect up to 7 cable segments via its Y Compliant with the IEEE 802 3 Repeater Specification network interface ports One port is fully Attachment Unit Interface (AUI) compatible and is able to connect to an exY 7 network connections (ports) per chip ternal Medium Attachment Unit (MAU) using the maximum Y Selectable on-chip twisted-pair transceivers length of AUI cable The other 6 ports have integrated Y Cascadable for large multiple RIC LERIC hub 10BASE-T transceivers These transceiver functions may applications be bypassed so tha...