XRT7250 - Exar Corporation

XRT7250 DS3/E3 FRAMER IC

The XRT7250 DS3/E3 Framer IC is designed to accept “User Data” from the Terminal Equipment and insert this data into the “payload” bit-fields within an “outbound” DS3/E3 Data Stream. Further, the Framer IC is also designed to receive an “inbound” DS3/E3 Data Stream (from the Remote Terminal Equipment) and extract out the “User Data”. The XRT7250 DS3/E3 Frame.

Features

• Transmits, Receives and Processes data in the DS3-C-bit Parity, DS3-M13, E3-ITU-T G.751 and E3-ITU-T G.832 Framing Formats.
• Interfaces to all Popular Microprocessors
• Integrated Framer Performance Monitor
• Available in a 100 Pin PQFP package
• Operating Temperature -40°C to +85°C APPLICATIONS
• Interface to DS3 or E3 Networks
• CSU/DSU Equipment.
• PCM Test Equipment
• Fiber Optic Terminals Transmit Overhead Input Interface Block Transmit Payload Data Input Interface Block TxPOS Transmit DS3/E3 Framer Block Transmit LIU Interface Block TxNEG TxLineClk MOTO D[7:0] A[8:0] Int CS Rd_DS .