XRT72L53

www.DataSheet4U.com áç MAY 2001 PRELIMINARY XRT72L53 REV. P1.1.8 THREE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER GENERAL DESCRIPTION The XRT72L53, 3 Channel 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 XRT72L53 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 (November 1995 and October 1998 Revisions) Framing Formats. The XRT72L53 DS3/E3 Framer IC consists of three Transmit sections, three Receiver sections, three Performance Monitor Sections and a Microprocessor interface. The Transmit Sections, include a Transmit Payload Data Input Interface block, a Transmit Overhead Data Input Interface block, a Transmit HDLC Controller, a Transmit DS3/E3 Framer block and a Transmit LIU Interface Block which allows the Terminal Equipment to transmit data to a remote terminal. The Receive Sections, consist 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 FIGURE 1. BLOCK DIAGRAM OF THE XRT72...