ds2156gn Maxim Integrated Products, Inc., ds2156gn Datasheet - Page 9

• Manufacturer Part Number: ds2156gn
• Description: Ds2156, Ds2156l, Ds2156ln T1/e1/j1 Single-chip Transceiver Tdm/utopia Ii Interface
• Manufacturer: Maxim Integrated Products, Inc.

1. MAIN FEATURES
The DS2156 contains all of the features of the previous generation of Dallas Semiconductor’s T1 and E1 SCTs plus
many new features such as a UTOPIA bus interface.
General
Line Interface
Programmable output clocks for fractional T1, E1,
H0, and H12 applications
Interleaving PCM bus operation
8-bit parallel control port, multiplexed or
nonmultiplexed, Intel or Motorola
IEEE 1149.1 JTAG-Boundary Scan
3.3V supply with 5V tolerant inputs and outputs
Pin compatible with DS2155, DS2152/DS2154,
and DS21x5Y SCT family
Signaling System 7 Support
RAI-CI, AIS-CI support
100-pin LQFP package (14mm x 14mm) (DS2156)
3.3V supply with 5V tolerant inputs and outputs
LQFP package that is pin compatible with
DS2152/DS2154, DS21352/DS21354,
DS21552/DS21554, and DS2155
Evaluation kits
IEEE 1149.1 JTAG boundary scan
Driver source code available from the factory
Requires only a 2.048MHz master clock for both
E1 and T1 operation with the option to use
1.544MHz for T1 operation
Fully software configurable
Short-haul and long-haul applications
Automatic receive sensitivity adjustments
Ranges include 0 to 43dB or 0 to 12dB for E1
applications and 0 to 13dB or 0 to 36dB for T1
applications
Receive level indication in 2.5dB steps from
-42.5dB to -2.5dB
Internal receive termination option for 75Ω, 100Ω,
and 120Ω lines
Internal transmit termination option for 75Ω, 100Ω,
and 120Ω lines
Monitor application gain settings of 20dB, 26dB,
and 32dB
G.703 receive synchronization-signal mode
Flexible transmit waveform generation
T1 DSX-1 line buildouts
T1 CSU line buildouts of -7.5dB, -15dB, and
-22.5dB
E1 waveforms include G.703 waveshapes for
both 75Ω coax and 120Ω twisted cables
AIS generation independent of loopbacks
Alternating ones and zeros generation
Square-wave output
9 of 265
Clock Synthesizer
Jitter Attenuator
Framer/Formatter
Open-drain output option
NRZ format option
Transmitter power-down
Transmitter 50mA short-circuit limiter with
current-limit-exceeded indication
Transmit open-circuit-detected indication
Line interface function can be completely
decoupled from the framer/formatter
Output frequencies include 2.048MHz, 4.096MHz,
8.192MHz, and 16.384MHz
Derived from recovered receive clock
32-bit or 128-bit crystal-less jitter attenuator
Requires only a 2.048MHz master clock for both
E1 and T1 operation with the option to use
1.544MHz for T1 operation
Can be placed in either the receive or transmit path
or disabled
Limit trip indication
Fully independent transmit and receive
functionality
Full receive and transmit path transparency
T1 framing formats include D4 (SLC-96) and ESF
Detailed alarm and status reporting with optional
interrupt support
Large path and line error counters for:
–
–
Timed or manual update modes
DS1 idle code generation on a per-channel basis in
both transmit and receive paths
–
–
ANSI T1.403-1998 Support
RAI-CI detection and generation
AIS-CI detection and generation
E1ETS 300 011 RAI generation
G.965 V5.2 link detect
Ability to monitor one DS0 channel in both the
transmit and receive paths
In-band repeating pattern generators and detectors
–
–
T1: BPV, CV, CRC6, and framing bit errors
E1: BPV, CV, CRC4, E-bit, and frame
alignment errors
User-defined
Digital milliwatt
Three independent generators and detectors
Patterns from 1 to 8 bits or 16 bits in length