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UPD98411 Datasheet Atm Quad Sonet Framer

Manufacturer: NEC (now Renesas Electronics)

Overview: DATA SHEET MOS INTEGRATED CIRCUIT µPD98411 ATM QUAD SONET FRAMER The µPD98411 NEASCOT-P40 is one of ATM-LAN LSIs and provides the functions of the TC sublayer of the SONET/SDH-base physical layer of the ATM protocol specified by the ATM Forum. Its main functions include a transmission function to map an ATM cell passed from an ATM layer to the payload of 155M-bps SONET STS3c/SDH STM-1 frame and transmit the cell to the PMD (Physical Media Dependent) sublayer of the physical layer, and a reception function to separate the overhead and ATM cell from the data string received from the PMD device and transmit the ATM cell to the ATM layer. The µPD98411 NEASCOT-P40 combines these transmission This LSI is ideally suited for /reception functions into a port function that is realized as a single 4-port LSI chip. use in the ATM hubs, ATM switches, and other equipment used to configure an ATM network. In addition, the µPD98411 also has a clock recovery function for each port to extract synchronous clock for reception of receive data from the bit stream, and a clock synthesis function to generate a clock for transmission.

General Description

, refer to the following user's manual.

µPD98411 User's Manual : S12736E

Key Features

  • Incorporates an ATM user network interface TC sublayer function for four channels. Conforms to ATM FORUM UNI v3.1. Incorporates four clock recovery PLLs and one clock synthesizer PLL. Conforms to ATM FORUM UTOPIA Level 2 v1.0.
  • ATM layers can be selected from the multi-PHY interface (up to 800 Mbps) in several different modes. Single 16-bit Single 8-bit Dual 8-bit 1TCLAV/1RCLAV (Cell Available signal mode) Direct Status Indication mode Multiplexe.

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