DS33X82+

Specialized Overview

The DS33X82+ is an Ethernet over PDH mapping device that encapsulates MAC frames in GFP-F, HDLC, cHDLC, or X.86 (LAPS) for transmission over TDM data streams. It supports up to two bidirectional synchronous serial links operating at speeds up to 52Mbps over interfaces such as xDSL, T1/E1/J1, T3/E3, or V.35/Optical. The component features a 10/100/1000Mbps IEEE 802.3 MAC with MII/RMII/GMII interfaces and integrates VCAT/LCAS link aggregation for dynamic bandwidth scaling across up to 16 links. It operates on 1.8V, 2.5V, and 3.3V supplies within the -40°C to +85°C industrial temperature range.

Specialized Feature Summary

• Supports Ethernet bridging, filtering, and traffic conditioning functions at wire speed.
• Enables Quality of Service through VLAN, Q-in-Q, 802.1p, and DSCP classification.
• Provides flexible encapsulation options including GFP-F, LAPS, HDLC, and cHDLC.
• Allows external processor management via parallel and SPI microprocessor interfaces.

Specialized Applications

• Bonded transparent LAN services
• LAN extension over T1/E1/J1, T3/E3, OC-1/EC-1, G.SHDSL, or HDSL2/4
• Ethernet delivery over PDH/TDM networks

Specialized Procurement Notes

Verify the specific package variant and revision level against the manufacturer's current documentation before procurement. Confirm lead-free status and RoHS compliance requirements for the target application environment. Ensure compatibility with the required DDR SDRAM buffer specifications and interface voltage levels during the design phase.

Specialized Selection Notes

Select this model when two independent serial WAN ports are required alongside standard Ethernet connectivity. Verify that the system architecture accommodates the necessary external DDR SDRAM memory for frame buffering. Ensure the host processor can support the required parallel or SPI control interface protocols for configuration and OAM operations.

Specialized Part Context

This component belongs to the DS33X162 family of semiconductor devices designed for extending Ethernet LAN segments over legacy TDM infrastructure. It serves as a bridge between modern Ethernet standards and traditional PDH/TDM transport networks, enabling service providers to deliver Ethernet access services like eLINE and eLAN over existing copper or fiber lines.

Specialized Replacement Considerations

DS33X162+

Specialized FAQ

What encapsulation protocols does the DS33X82+ support?

The device supports GFP-F, HDLC, cHDLC, and X.86 (LAPS) encapsulation for transmitting Ethernet frames over TDM streams.

Does the DS33X82+ include integrated voice ports?

No, the DS33X82+ has zero voice ports. Voice capabilities are available only in the DS33W41 and DS33W11 variants within the same family.

How does the device handle link aggregation?

It supports VCAT/LCAS link aggregation, allowing for dynamic link capacity adjustment across up to 16 serial links to manage bandwidth efficiently.