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Dallas Semiconductor - E1/T1/J1 Shortand Long-Haul Line Interface Unit

Numéro de référence DS26334
Description E1/T1/J1 Shortand Long-Haul Line Interface Unit
Fabricant Dallas Semiconductor 
Logo Dallas Semiconductor 





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DS26334 fiche technique
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www.maxim-ic.com
DS26334
3.3V, 16-Channel, E1/T1/J1 Short-
and Long-Haul Line Interface Unit
GENERAL DESCRIPTION
The DS26334 is a 16-channel short/long-haul line
interface unit (LIU) that supports E1/T1/J1 from a
single 3.3V power supply. A single bill of material can
support E1/T1/J1 that requires no external
termination. Redundancy is supported through
nonintrusive monitoring, optimal high-impedance
modes and configurable 1:1 or 1+1 backup
enhancements. An on-chip synthesizer generates the
E1/T1/J1 clock rates by a single master clock input of
various frequencies. Two clock output references are
also offered. The device is offered in a 256-pin
TE-CSBGA, the smallest package available for a
16-channel LIU.
APPLICATIONS
T1 Digital Cross-Connects
ATM and Frame Relay Equipment
Wireless Base Stations
ISDN Primary Rate Interface
E1/T1/J1 Multiplexer and Channel Banks
E1/T1/J1 LAN/WAN Routers
FUNCTIONAL DIAGRAM
JTAG
SOFTWARE CONTROL
AND JTAG
MODE
LOSS
RTIP
RRING
TTIP
TRING
RECEIVER
TRANSMITTER
1
RPOS
RNEG
RCLK
TPOS
TNEG
TCLK
16
FEATURES
16 E1, T1, or J1 Short/Long-Haul Line
Interface Units
Independent E1, T1 or J1 Selections
Fully Internal Impedance Match Requires No
External Resistors
Software-Selectable Transmit and Receive-
Side Impedance Match
Crystal-Less Jitter Attenuator
Selectable Single-Rail and Dual-Rail Mode
and AMI or HDB3/B8ZS Line Encoding and
Decoding
Detection and Generation of AIS
Digital/Analog Loss of Signal Detection as
per T1.231, G.775 and ETS 300 233
External Master Clock Can Be Multiple of
2.048MHz or 1.544MHz for T1/J1 or E1
Operation; This Clock Will Be Internally
Adapted for T1 or E1 Usage
Receiver Signal Level Indicator from -2.5dB to
-38dB in T1 Mode and -3dB to -43dB in E1
Mode in 2.5dB Increments
Two Built-In BERT Testers for Diagnostics
8-Bit Parallel Interface Support for Intel or
Motorola Mode or a 4-Wire Serial Interface
Transmit Short-Circuit Protection
G.772 Nonintrusive Monitoring
Receive Monitor Mode Handles Combinations
of 14dB to 30dB of Resistive Attenuation
Along with 12dB to 30dB of Cable Attenuation
Specification Compliance to the Latest T1
and E1 Standards—ANSI T1.102, AT&T Pub
62411, T1.231, T1.403, ITU-T G.703, G.742,
G.775, G.823, ETS 300 166, and ETS 300 233
Single 3.3V Supply with 5V Tolerant I/O
JTAG Boundary Scan as Per IEEE 1149.1
ORDERING INFORMATION
PART
DS26334G
DS26334GN
TEMP RANGE PIN-PACKAGE
0°C to +70°C 256 TE-CSBGA
-40°C to +85°C 256 TE-CSBGA
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
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