Datasheet Summary
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JANUARY 2001
PRELIMINARY
REV. P1.1.2
SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
GENERAL DESCRIPTION
The XRT72L56, 6 Channel DS3/E3 Framer 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. The XRT72L56 DS3/E3 Framer support full-duplex data flow between Terminal Equipment and an LIU (Line Interface Unit) . The Framer will transmit, receive and process data in the DS3-C-bit Parity, DS3M13, E3-ITU-T G.751 and E3-ITU-T G.832 Framing Formats. In addition, XRT72L56 has 6 independent high speed HDLC controllers both on the receive and transmit data...