XRT72L50

www.DataSheet4U.com áç OCTOBER 2003 XRT72L50 SINGLE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER REV. 1.2.1 GENERAL DESCRIPTION The XRT72L50, single Channel DS3/E3 Framer IC is designed to accept user data from the Terminal Equipment and insert this data into the payload bitfields 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 XRT72L50 DS3/E3 Framer device is designed to support full-duplex data flow between Terminal Equipment and an LIU (Line Interface Unit) IC. The Framer Device will transmit, receive and process data in the DS3-C-bit Parity, DS3-M13, E3-ITU-T G.751 and E3ITU-T G.832 Framing Formats. The XRT72L50 DS3/E3 Framer IC consists of a Transmit section, Receiver section, Performance Monitor Section and a Microprocessor interface. The Transmit Section includes a Transmit Payload Data Input Interface, a Transmit Overhead data Input Interface Section, a Transmit HDLC Controller, a Transmit DS3/E3 Framer block and a Transmit LIU Interface Block which permits the Terminal Equipment to transmit data to a remote terminal. The Receive Section consists of a Receive LIU Interface, a Receive DS3/E3 Framer, a Receive HDLC Controller, a Receive Payload Data Output Interface, and a Receive Overhead Data Interface which allows the local terminal equipment to receive data from remote terminal equipment. The Microprocessor Interface is u...