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DP83222 Datasheet Cyclone Twisted Pair Fddi Stream Cipher Device

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: .. DP83222 CYCLONE Twisted Pair FDDI Stream Cipher Device August 1994 DP83222 CYCLONE TM Twisted Pair FDDI Stream Cipher.

General Description

The DP83222 CYCLONE Stream Cipher Scrambler Descrambler Device is an integrated circuit designed to interface directly with the serial bit streams of a Twisted Pair FDDI PMD The DP83222 is designed to be fully patible with the National Semiconductor FDDI Chip Sets including the DP83223 TWISTERTM (Twisted Pair Transceiver) The DP83222 requires a 125 MHz Transmit Clock and corresponding Receive Clock for synchronous data scrambling and descrambling The DP83222 is pliant with the ANSI X3T9 5 TP-PMD draft standard and is required for the reduction of EMI emission over unshielded media The DP83222 is specified to work in conjunction with existing twisted pair transceiver signalling schemes such as MLT-3 or NRZI and enables high bandwidth transmission over Twisted Pair copper media

Key Features

  • Y Y Y Y Y Y Y Y Y Enables 100 Mbps FDDI signalling over Category 5 Unshielded Twisted Pair (UTP) cable and Type 1 Shielded Twisted Pair (STP) Reduces EMI emissions over Twisted Pair media Compatible with ANSI X3T9 5 TP-PMD Standard Requires a single a 5V supply Transparent mode of operation Flexible NRZ and NRZI format options Advanced BiCMOS process Signal Detect and Clock Detect inputs provided for enhanced functionality Suitable for Fiber Optic PMD replacement.

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