Rainbow Electronics DS2152 - Manual

E Copyright 1997 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to
Dallas Semiconductor data books.
DS2152
Enhanced T1 Single Chip Transceiver
DS2152
PRELIMINARY
031897 1/79
FEATURES
•
Complete DS1/ISDN–PRI transceiver functionality
•
Line interface can handle both long and short haul
trunks
•
32–bit or 128–bit crystal–less jitter attenuator
•
Generates DSX–1 and CSU line build outs
•
Frames to D4, ESF, and SLC–96 R formats
•
Dual onboard two–frame elastic store slip buffers that
can connect to asynchronous backplanes up to
8.192 MHz
•
8–bit parallel control port that can be used directly on
either multiplexed or non–multiplexed buses (Intel or
Motorola)
•
Extracts and inserts robbed bit signaling
•
Detects and generates yellow (RAI) and blue (AIS)
alarms
•
Programmable output clocks for Fractional T1
•
Fully independent transmit and receive functionality
•
Integral HDLC controller with 16–byte buffers for the
FDL
•
Generates and detects in–band loop codes from 1 to
8 bits in length including CSU loop codes
•
Contains ANSI one’s density monitor and enforcer
•
Large path and line error counters including BPV, CV,
CRC6, and framing bit errors
•
Pin compatible with DS2154 E1 Enhanced Single–
Chip Transceiver
•
5V supply; low power CMOS
•
100–pin 14mm 2 body LQFP package
PIN ASSIGNMENT
100
1
ORDERING INFORMATION
DS2152L (0
°
C to 70
°
C)
DS2152LN (–40 ° C to +85 ° C)
DESCRIPTION
The DS2152 T1 Enhanced Single–Chip Transceiver
contains all of the necessary functions for connection to
T1 lines whether they be DS–1 long haul or DSX–1 short
haul. The clock recovery circuitry automatically adjusts
to T1 lines from 0 feet to over 6000 feet in length. The
device can generate both DSX–1 line build outs as well
as CSU line build outs of –7.5 dB, –15 dB, and –22.5 dB. The onboard jitter attenuator (selectable to either 32 bits
or 128 bits) can be placed in either the transmit or
receive data paths. The framer locates the frame and
multiframe boundaries and monitors the data stream for
alarms. It is also used for extracting and inserting
robbed–bit signaling data and FDL data. The device
contains a set of internal registers which the user can