OVERVIEW

The PM5945-UTP5 (SAPI-UTP5) daughter board contains the PMC PM5345 S/UNI- 155 (SATURN User Network Interface) device, the Cypress CY7B951 SONET/SDH Serial Transceiver (a clock and data recovery and clock synthesis device), and the CAT-5 UTP PMD in a complete CAT-5 UTP ATM (Asynchronous Transfer Mode) physical interface. The S/UNI is an ATM physical layer processor for a SONET STS-3C transmission system. This daughter board has been designed to mate with National Semiconductor Corporations DP83300VK Vicksburg EISA adapter motherboard to form a complete evaluation system. It is configured, monitored, and powered through a 100 pin edge connector that mates with the Vicksburg motherboard. The motherboard provides all of the software and decoding logic necessary to directly access all of the registers on the SAPI-UTP5 board.