Analog Devices Inc./Maxim Integrated DS33Z44+

Overview

The DS33Z44DK from Maxim Integrated (formerly Dallas Semiconductor) is an evaluation and development platform for the DS33Z44 Ethernet transport-over-serial link device. It integrates a DS33Z44 mainboard, dual resource cards (DS21458 T1/E1 and DS3174 T3/E3 transceivers), on-board MMC2107 processor, ChipView configuration software, and full signal access for hardware/software validation in telecom transport applications.

For engineers reviewing the DS33Z44DK datasheet, DS33Z44DK pinout, DS33Z44DK application, or DS33Z44DK equivalent, this design kit enables rapid functional verification of Ethernet-to-T1/E1/T3/E3 bridging, register-level configuration via Windows-based GUI, CPLD-assisted loopback testing, and hardware-mode initialization without host driver dependency.

Technical Context

The DS33Z44DK implements a modular architecture with a central DS33Z44 mainboard interfacing two interchangeable serial resource cards: one based on the DS21458 quad T1/E1 transceiver and another on the DS3174 quad T3/E3 transceiver. Each card includes transformers, BNC/RJ48 connectors, termination, and configurable jumpers for port enable/tri-state control.

On-board peripherals include an MMC2107 microprocessor, dual Xilinx Spartan FPGAs (XC2S200 and XC2S50), Cypress SRAM, Micron SDRAM, National Semiconductor DP83847ALQA5 Ethernet PHYs, and multiple precision oscillators (2.048 MHz, 25 MHz, 44.736 MHz, 100 MHz). Configuration is supported via ChipView GUI, hardware mode switches, EEPROM, or device driver.

Key Specifications

Availability

DS33Z44DK is available at Aetrix Electronics and suitable for telecom infrastructure prototyping, carrier-grade serial-to-Ethernet gateway validation, and TDM-over-packet interoperability testing requiring stable component supply and full documentation traceability.

Supply support for DS33Z44DK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (acquired by Analog Devices in 2021) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and digital communication solutions for industrial, telecom, and computing markets.

The DS33Z44DK belongs to Maxim's legacy communications design kit portfolio, engineered specifically to accelerate development of Ethernet transport systems bridging legacy TDM networks (T1/E1/T3/E3) with modern IP infrastructure.

FAQ

What is the primary function of the DS33Z44DK?

The DS33Z44DK is a complete evaluation platform for the DS33Z44 Ethernet transport chip, enabling engineers to validate Ethernet-to-serial (T1/E1/T3/E3) bridging functionality. It supports hardware- and software-based configuration, real-time register access via ChipView, CPLD loopback testing, and interoperability verification with both DS21458 and DS3174 transceiver resource cards - all within the DS33Z44DK system.

Does the DS33Z44DK include both T1/E1 and T3/E3 transceiver support?

Yes, the DS33Z44DK includes two fully populated resource cards: a quad-port DS21458-based T1/E1 card with RJ45 connectors and a quad-port DS3174-based T3/E3 card with BNC connectors. Both cards are pre-integrated with transformers, termination, and jumper-configurable port enablement, allowing simultaneous or independent evaluation of DS33Z44 operation across both legacy telecom standards within the same DS33Z44DK platform.

How is the DS33Z44 configured on the DS33Z44DK?

The DS33Z44 on the DS33Z44DK supports four configuration methods: (1) automatic initialization via included device driver at power-up; (2) register-level setup using ChipView GUI with DS33Z44.def and .mfg files; (3) hardware mode via DIP switches (A0–A2, HWMODE, AFCS, FULLDS); and (4) EEPROM-based boot. All modes are validated and documented in the DS33Z44DK user manual, ensuring flexible DS33Z44 bring-up without host system dependencies.

What software tools ship with the DS33Z44DK?

The DS33Z44DK ships with ChipView software on CD-ROM, providing Windows-based point-and-click access to DS33Z44 registers, status monitoring, and configuration file loading (.def, .mfg, .ini). Also included are the DS33Z44DK data sheet, configuration files for all resource cards (e.g., ds3184_evbrd_reduced.def, e1_gapclk_crc4_hdb3_nocas.ini), and FPGA bitstreams - all pre-verified for use with the DS33Z44DK hardware.

Can the DS33Z44DK operate in loopback mode without external equipment?

Yes, the DS33Z44DK supports on-board CPLD loopback via jumper J24 on the DS3174 resource card. When installed, this configures the CPLD to echo traffic from the DS33Z44 back to itself - enabling self-contained functional validation of transmit/receive paths, queue behavior, and interrupt generation without requiring external network gear or loopback cables. LED indicators (RX/TX/INT) provide immediate visual feedback during DS33Z44DK loopback operation.