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UPD98404 Datasheet Advanced Atm Sonet Framer

Manufacturer: NEC (now Renesas Electronics)

Overview: DATA SHEET MOS INTEGRATED CIRCUIT µPD98404 ADVANCED ATM SONET.

General Description

The µPD98404 NEASCOT-P30TM is an LSI for ATM applications, which can be used in ATM adapter boards for connecting PCs or workstations to an ATM network and can also be used in ATM hubs and ATM switches.

This LSI provides the TC sub-layer functions in the SONET/SDH-base physical layer within the ATM protocol defined by the ATM Forum’s UNI3.1 recommendations.

This product’s main functions include transmission functions such as mapping of ATM cells sent from the ATM layer to the payload field in a 155 Mbps SONET STS-3c/SDH STM-1 frame and transmission to PMD (Physical Media Dependent) sub-layer in the physical layer.

Key Features

  • On-chip clock recovery/clock synthesis functions.
  • Provides TC sub-layer function for the ATM protocol’s physical layer.
  • Supported frame formats include 155 Mbps SONET STS-3c/SDH STM-1.
  • Conforms to ATM Forum UTOPIA interface Level 2 V1.0 (af-phy-0039.000 June 1995) Supports three UTOPIA interfaces:.
  • Single PHY octet-level handshaking.
  • Single PHY cell-level handshaking.
  • Multi PHY mode.
  • Selectable to drop/bypass unassigned cel.

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