DS21458

Quad T1/E1/J1 Transceivers

Industry's First 4-Port Transceivers to Switch Among All T1, E1, and J1 Standards without External Component Changes

Data Sheet (Rev. 7)

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Part Details

Four Independent Transceivers, Each Having the Following Features:

Complete T1 (DS1)/ISDN-PRI/J1 Transceiver Functionality
Complete E1 (CEPT) PCM-30/ISDN-PRI Transceiver Functionality
Short- and Long-Haul Line Interface for Clock/Data Recovery and Waveshaping
CMI Coder/Decoder
Crystal-Less Jitter Attenuator
Fully Independent Transmit and Receive Functionality
Dual HDLC Controllers
On-Chip Programmable BERT Generator and Detector
Internal Software-Selectable Receive- and Transmit-Side Termination Resistors for 75Ω/100Ω/120Ω T1 and E1 Interfaces
Dual Two-Frame Elastic-Store Slip Buffers that can Connect to Asynchronous Backplanes Up to 16.384MHz
16.384MHz, 8.192MHz, 4.096MHz, or 2.048MHz Clock Output Synthesized to Recovered Network Clock
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
DS21455 Directly Replaces DS21Q55
Signaling System 7 (SS7) Support
RAI-CI, AIS-CI Support

Documentation

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Product 4
DS21455		Quad T1/E1/J1 Transceivers
DS21Q55		Quad T1/E1/J1 Transceiver
DS21Q59	NOT RECOMMENDED FOR NEW DESIGNS	E1 Quad Transceiver
DS21Q50	LAST TIME BUY	Quad E1 Transceiver

Tools & Simulations

BSDL Model File 1

ADSP-DS21458 BSDL Model

IBIS Model 1

DS21458 IBIS Model

Evaluation Kits

Design Kit for the DS21458 Quad T1/E1/J1 Transceiver Daughter Card

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Features and Benefits

Demonstrates Key Functions of DS21458 Quad T1/E1/J1 Transceiver
Includes DS21458 Quad LIU, Transformers, BNC and RJ45 Network Connectors, and Termination Passives
Compatible with DK101 and DK2000 Demo Kit Motherboards
DK101/DK2000 and ChipView Software Provide Point-and-Click Access to the DS21458 Register Set
All Equipment-Side Framer Pins are Easily Accessible for External Data Source/Sink
Memory-Mapped FPGA Provides Flexible Clock/Data/Sync Connections Among Framer Ports and DK2000 Motherboard
LEDs for Loss-of-Signal and Interrupt Status
Easy-to-Read Silk Screen Labels Identify the Signals Associated with all Connectors, Jumpers, and LEDs
Network Interface Protection for Overvoltage and Overcurrent Events

Product Details

The DS21458DK is an easy-to-use evaluation board for the DS21458 quad T1/E1/J1 transceiver. The DS21458DK is intended to be used as a daughter card with the DK101 motherboard or the DK2000 motherboard. The DS21458DK comes complete with a DS21458 quad SCT, transformers, termination resistors, configuration switches, line-protection circuitry, network connectors, and motherboard connectors. The DK101/DK2000 motherboard and Dallas' ChipView software give point-and-click access to configuration and status registers from a Windows®-based PC. On-board LEDs indicate receive loss-of-signal and interrupt status. An on-board FPGA contains mux logic to connect framer ports to one another or to the DK2000 in a variety of configurations.

Each DS21458DK is shipped with a free DK101 motherboard. For complex applications, the DK2000 high-performance demo kit motherboard can be purchased separately.

Resources

DS21458DK Gerber File - Design Files
1.86M

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Part Details

Documentation

Data Sheet 1

Reliability Data 1

Application Note 5

Design Note 4

Technical Articles 3

Evaluation Design File 1