78P2241B-IGT/F

78P2241B E3/DS3/STS-1 Line Interface Unit DATA SHEET JULY 2005 DESCRIPTION FEATURES The 78P2241B is a line interface transceiver IC for E3, DS3, STS-1, NA T3 and ATM applications. It includes clock recovery and transmitter pulse shaping functions for applications using 75-ohm coaxial cable at distances up to 1100 feet. These applications include DSLAMs, digital multiplexers, SONET Add/Drop multiplexers, PDH equipment, DS3 to Fiber optic and microwave modems and ATM WAN access for routers and switches. • • • The receiver recovers clock and data from a B3ZS or HDB3 coded AMI signal. It can compensate for over 12dB of cable and 6dB of flat loss. The transmitter generates a signal that meets the standard pulse shape requirements. • • • • The 28-pin PLCC 78P2241B is pin and functionally compatible to the 78P7200L and the 78P2241 (28 PLCC version). The 78P2241B in the 48-pin TQFP is pin compatible with the 78P2241 in the same package. To the 78P7200L functionality, it adds a B3ZS/HDB3 ENDEC, line code violation detector, loop-back and clock polarity selection as well as ability to receive a DSX3 monitor signal. The line code violation detector has been added to the 78P2241 functionality. • • • • • • The 78P2241B is manufactured in an advanced BICMOS process and operates at both 5V and 3.3 V power supply voltages. It consumes less than 110 mA of supply current. LBO Data Slicer Page: 1 of 23 LINP Adaptive Equalizer Biasing Signal Detector © 2005 Teridian Semiconductor Corporation LINN MON Clock Recovery LF RCLK B3ZS / HDB3 Decoder LOUTN LOS RPOS RNEG LOUTP PULSE SHAPER RFO TCLK B3ZS / HDB3 Encoder LPBK TPOS TNEG LPBK BLOCK DIAGRAM TXEN • Single chip transmit and receive interface for E3, DS3 and STS-1 applications. Interface to 75 ohm coaxial cable over 1100 feet at speeds up to 51.84 Mbps. Compliant with ANSI T1.102-1993, Telcordia GR-499-CORE and GR-253-CORE, ITU-T G.703, G.823 for jitter tolerance, and G.775 for loss of signal. Compliant with ATM FORUM af-phy-0034 (E3 public UNI) and af-phy-0054 (DS3 public UNI). Easily Interfaced to ATM framer ICs such as PMC 7345 , 7346 QJET and 7321. Unique clock recovery requires no reference clock or crystal oscillator. Receive DS3-high and DSX3 monitor signals Includes diagnostic loop-back for AMI and digital signals. Includes a selectable B3ZS/HDB3 ENDEC. Pin compatible to 78P7200 (28-lead PLCC) and 78P2241. 28-lead PLCC and 48-lead TQFP packages 3.3 or 5 V operation, ICC