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78P7200L
E3/DS3/STS-1
Transceiver
March 2001
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 and G.823 for jitter tolerance.
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 signal
Includes diagnostic loop-back for AMI and digital
signals.
Pin compatible to 78P7200 and 78P2241 (28-
lead PLCC).
28-lead PLCC and 48-lead TQFP packages
3.3 or 5 V operation, ICC<95mA
Input circuit works either Transformer or
Capacitor coupled
BLOCK DIAGRAM
LPBK
LBO
TXEN
TPOS
TNEG
TCLK
Binary
to
AMI
PULSE
SHAPER
LOUTP
LOUTN
RPOS
RNEG
AMI
to
Binary
Data
Slicer
Adaptive
Equalizer
Clock
Recovery
LINP
LINN
RCLK
Biasing
Signal
Detector
LF
LPBK
RFO
LOS