The following content is an automatically extracted verbatim text
from the original manufacturer datasheet and is provided for reference purposes only.
View original datasheet text
www.DataSheet4U.com
áç
JANUARY 2001
PRELIMINARY
XRT72L56
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 paths which can be optionally configured to support Framer Relay applications.