Implementation of a SDH STM-N IC for B-ISDN using VHDL based synthesis tools

payload. The current recommendations include SDH as the physical layer transmission standard. It is defined the BISDN user network interface (UNI) SDH-based at 155.52 Mbit/s, but there is a straightforward way of creating a 622.08 Mbit/s (or 2.48832 Gbit/s) frame from four (or sixteen) STM-1s according to [4]. A general VHDL description, allowing to synthesize a set of B-ISDN user network interface (UNI) ICs for the different SDH levels (155, 622,... Mbit/s), is presented. The synthesized UNI ICs allow a STM-1 on STM-N frame multiplexation or to directly perform the payload mapping of N 155 Mbit/s ATM cell streams on a STM-N frame in a compact and cost-effective manner. We have developed a general VHDL description that, by means of a VHDL synthesis tool, allows the designer to obtain a set of B-ISDN UNI ICs for the different SDH levels. The synthesized ICs perform the SDH overhead processing and provide payload mapping of ATM cells. Two main reasons have motivated this work: the implic...

• Type: Conference
• Year: 1994
• Where: EURODAC
• Authors: Juan Carlos Calderón, Enric Corominas, José M. Tapia, Luis París
• Keywords: EURODAC 1994, General Vhdl Description, UNI ICs, User Network Interface, VHDL