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Analog Devices Inc./Maxim Integrated DS33M30N+
- Part No.:
- DS33M30N+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 144-LFBGA, CSPBGA
- Datasheet:
-
DS33M30N+.pdf
- Description:
- IC INTFACE SPECIALIZED 144CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,128
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Product details
Overview
DS33M30N+ from Maxim Integrated is a single-port Ethernet-over-SONET/SDH mapper IC that performs high-order VC-4/STS-3c mapping of 10/100/1000Mbps Ethernet traffic into OC-3/STM-1 optical networks. It integrates a GMII Ethernet MAC, one 155.52Mbps SerDes port with LVDS/LVPECL interface, GFP-F/HDLC/cHDLC/X.86 encapsulation, IEEE 802.1Q VLAN support, and QoS traffic policing via CIR/CBS - enabling carrier-grade GbE transport in multiservice provisioning platforms.
For engineers reviewing the DS33M30N+ datasheet, DS33M30N+ pinout, DS33M30N+ application, or DS33M30N+ equivalent, this device serves as a compact, RoHS-compliant solution for EoS at VC-4 only - with no PDH or multi-VC-3 support - requiring precise alignment to SONET/SDH timing, STS-3c SPE termination, and GMII-to-VC-4 payload mapping in space-constrained telecom line cards.
Technical Context
The DS33M30N+ implements a dedicated STS-3c/VC-4 path termination architecture with full POH (J1/B3/C2/G1/F2/H4) generation and monitoring, pointer processing per ITU-T G.707, and automatic BIP-8 (B1/B2/B3) error calculation. Its single SerDes operates at 155.52Mbps with loop-timed or local-timed transmit clocking using an internal CLAD.
It supports only one mapping mode: Ethernet → VC-4 → STM-1, with GFP-F, HDLC, cHDLC, or X.86 (LAPS) frame encapsulation. Unlike DS33M31/DS33M33, it lacks VCAT, PDH framer, dual SerDes, or AU-3/VC-3 path handling - making it functionally distinct in both feature set and system role.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Ethernet Interface | Single 10/100/1000Mbps GMII port - directly connects to external PHY or switch ASIC without MII/RMII configuration overhead. |
| SONET/SDH Port | One 155.52Mbps STS-3/STM-1 SerDes with LVDS/LVPECL I/O - enables glueless interconnect to commercial optical transceivers. |
| Mapping Capability | EoS at VC-4 only - maps Ethernet frames into a single STS-3c SPE; no VC-3 concatenation, EoPoS, or PDH support. |
| Encapsulation Protocols | GFP-F (ITU-T G.7041), HDLC, cHDLC, X.86 (LAPS) - provides interoperability with legacy and standards-compliant SONET/SDH equipment. |
| VLAN & QoS | IEEE 802.1Q tagging and Q-in-Q support plus CIR/CBS-based traffic policing - enables differentiated service delivery for carrier Ethernet SLAs. |
| Memory Interface | 125MHz DDR SDRAM controller supporting up to 512Mb buffer - manages packet buffering across asynchronous Ethernet and SONET domains. |
| Power Supplies | 1.8V core, 2.5V DDR, 3.3V I/O - requires three independent low-noise rails for signal integrity in telecom backplanes. |
Pinout & Package
DS33M30N+ is housed in a 10mm × 10mm, 144-ball CSBGA package with 0.8mm pitch and Pb-free/RoHS-compliant finish. Ball assignment follows Maxim's standard layout for SerDes, GMII, SPI, DDR, and power/ground distribution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GMII_TXD[7:0] | Ethernet Transmit Data | 8-bit parallel GMII data output synchronized to GMII_TXCLK; drives external PHY or switch MAC interface. |
| SDA_IN[15:0] | SerDes Receive Data | 16-bit LVDS input carrying recovered STS-3/STM-1 serial data; requires external AC coupling and termination. |
| SDA_OUT[15:0] | SerDes Transmit Data | 16-bit LVDS output driving optical transceiver; bit-aligned to internal STS-3 frame clock. |
| REFCLK | Reference Clock Input | Single-ended 19.44MHz or 77.76MHz input feeding internal CLAD for all timing domains including SerDes and DDR. |
| SPICLK / SPIMOSI / SPIMISO / SPICS | SPI Control Interface | 4-wire SPI bus for register configuration, status readback, and OAM frame insertion/extraction. |
| VDD_CORE / VDD_DDR / VDD_IO | Power Supply Rails | Dedicated 1.8V (core logic), 2.5V (DDR interface), and 3.3V (I/O buffers) supplies - must be independently filtered and decoupled. |
Key Features
| Feature | Design Value |
|---|---|
| VC-4 Path Termination | Full J1/B3/C2/G1/F2/H4 POH generation and monitoring per ITU-T G.707 - ensures standards-compliant path-level defect detection and performance reporting. |
| STS-3c Pointer Processing | Hardware-accelerated H1/H2/H3 pointer generation and interpretation - maintains precise payload alignment during network synchronization shifts. |
| GFP-F Encapsulation | Native ITU-T G.7041 Frame-Mapped GFP support - enables efficient, low-latency Ethernet transport with transparent payload handling. |
| OAM Frame Handling | µP-interface add/drop of IEEE 802.3ah OAM frames - allows in-band operations, administration, and maintenance without disrupting data flow. |
| QoS Traffic Policing | CIR/CBS-based rate limiting with classification via PCP/DSCP - enforces bandwidth guarantees and SLA compliance for carrier-class services. |
Applications
| Ethernet Service Delivery Over SONET/SDH | Multiservice Provisioning Platform (MSPP) |
|---|---|
Use Scenario: Aggregating enterprise LAN traffic onto regional OC-3 fiber rings for metro transport. IC Role / Device Role / Timing Role: DS33M30N+ acts as the sole EoS mapper at the edge node, converting GMII Ethernet frames into STS-3c SPEs with GFP-F encapsulation and VC-4 path overhead. Use Value: Enables deterministic 1Gbps Ethernet transport over legacy SONET infrastructure with full path-level OAM and BIP-8 error monitoring. |
Use Scenario: Embedding in modular MSPP line cards where space and power are constrained but VC-4-only service tiers are required. IC Role / Device Role / Timing Role: DS33M30N+ serves as the compact, single-function EoS engine - offloading mapping from host processor while maintaining strict SONET timing alignment. Use Value: Reduces bill-of-materials count by integrating SerDes, MAC, encapsulation, and VC-4 termination in one 144-ball CSBGA. |
| Transparent LAN Service (TLS) | LAN Extension Across SONET |
Use Scenario: Providing point-to-point Layer 2 Ethernet extension between geographically separated campuses over leased OC-3 circuits. IC Role / Device Role / Timing Role: DS33M30N+ performs transparent GFP-F encapsulation and VC-4 path termination - preserving original Ethernet frame structure end-to-end. Use Value: Delivers sub-50µs latency and zero frame loss under normal conditions, meeting TLS SLA requirements for jitter-sensitive applications. |
Use Scenario: Extending corporate LANs across metropolitan areas using existing SONET dark fiber or lit services. IC Role / Device Role / Timing Role: DS33M30N+ maps native Ethernet traffic into VC-4 payloads with IEEE 802.1Q VLAN tagging preserved across the SONET domain. Use Value: Maintains VLAN integrity and QoS markings through the optical layer - eliminating need for reclassification at remote endpoints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Ethernet-over-SONET/SDH mapping applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS33M31N+ | Dual 155.52Mbps SerDes ports, supports EoS at 3×VC-3 and EoPoS at 3×DS3, adds VCAT/LCAS and parallel µP interface. | Required for protected SONET links or next-generation EoS with virtual concatenation; not drop-in compatible due to 256-pin CSBGA and expanded feature set. | Select DS33M31N+ only when multi-VC-3 mapping, protection switching, or PDH interworking is needed - DS33M30N+ remains optimal for cost-sensitive VC-4-only deployments. |
| MAX24287 | Single-port EoS mapper with integrated 155Mbps SerDes and 10/100Mbps MII - no GMII, no GFP-F, limited to HDLC/X.86, and no VC-4 path termination. | Suitable for basic EoS in non-carrier environments where full SONET standards compliance and path-level OAM are not required. | Choose MAX24287 for simplified, lower-cost EoS where VC-4 POH, GFP-F, or carrier-grade monitoring is unnecessary - DS33M30N+ delivers full ITU-T G.707 conformance. |
Compared with DS33M31N+, DS33M30N+ offers lower pin count, smaller footprint, and reduced power - ideal for fixed VC-4 service tiers; versus MAX24287, DS33M30N+ provides full GFP-F, VC-4 path termination, and carrier-class OAM - essential for SLA-driven deployments.
Availability
DS33M30N+ is available at Aetrix Electronics and suitable for Ethernet service delivery over SONET/SDH, multiservice provisioning platforms, and transparent LAN services requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for DS33M30N+ 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 (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and digital ICs for communications, computing, and industrial systems.
The DS33M30N+ belongs to Maxim's Ethernet-over-SONET/SDH mapper product line, designed specifically for compact, standards-compliant GbE transport in telecom access and aggregation equipment where VC-4-only mapping suffices.
FAQ
What is the primary function of the DS33M30N+ in a telecom system?
The DS33M30N+ functions as a dedicated Ethernet-over-SONET/SDH mapper that converts 10/100/1000Mbps Ethernet traffic into STS-3c/VC-4 payloads for transport over OC-3/STM-1 optical networks. It handles GFP-F/HDLC encapsulation, VC-4 path overhead generation and monitoring, and SerDes interfacing - all within a single 144-ball CSBGA package. DS33M30N+ does not support PDH, VCAT, or multi-VC-3 mapping, making it purpose-built for fixed VC-4 service layers.
Does the DS33M30N+ support dual SerDes or protected SONET interfaces?
No, the DS33M30N+ supports only one 155.52Mbps SerDes port and does not implement protected SONET interfaces. Dual SerDes and protection switching capabilities are exclusive to DS33M31N+ and DS33M33N+. The DS33M30N+ is designed for simplex VC-4 mapping in cost- and space-constrained edge nodes where redundancy is handled externally - confirming its role as a minimal-footprint EoS solution.
Can the DS33M30N+ perform Ethernet-over-PDH-over-SONET (EoPoS) mapping?
No, the DS33M30N+ does not support EoPoS mapping. It is limited to Ethernet-over-SONET/SDH at VC-4 only. EoPoS functionality - including DS3/E3 framing, add/drop, and mapping into VC-3 or TU-3 containers - is available only in DS33M31N+ and DS33M33N+. This functional boundary is explicitly defined in Maxim's product selection matrix and confirmed across all datasheet sections - ensuring DS33M30N+ remains optimized for pure VC-4 use cases.
What encapsulation protocols does the DS33M30N+ support, and which is recommended for carrier networks?
The DS33M30N+ supports GFP-F (ITU-T G.7041), HDLC, cHDLC, and X.86 (LAPS) encapsulation. For carrier-grade deployments, GFP-F is recommended due to its efficiency, native support for variable-length Ethernet frames, and robust OAM integration. DS33M30N+ implements full GFP-F frame mapping with payload scrambling and header CRC - aligning with Metro Ethernet Forum and ITU-T operational requirements for SLA-backed services.
Is the DS33M30N+ pin-compatible with other devices in the DS33M3x family?
No, the DS33M30N+ is not pin-compatible with DS33M31N+ or DS33M33N+. It uses a 144-ball CSBGA package, while DS33M31N+ and DS33M33N+ use a larger 256-ball CSBGA. Pin assignments, power rail requirements, and interface configurations differ significantly - especially regarding SerDes count, DDR interface width, and µP bus options. DS33M30N+ is a standalone solution with no mechanical or electrical interchangeability within the family.
DS33M30N+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 144-LFBGA, CSPBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- Data Transport
- Interface:
- SPI Serial
- Voltage - Supply:
- 1.8V, 2.5V, 3.3V
- Supplier Device Package:
- 144-CSBGA (10x10)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
DS33M30N+ FAQ
1.How can I place an order for DS33M30N+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS33M30N+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS33M30N+ reliable?
The price and inventory of DS33M30N+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS33M30N+ is usually 5 days.
3.What payment methods are accepted for DS33M30N+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS33M30N+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS33M30N+?
DS33M30N+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS33M30N+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS33M30N+?
For technical support, including DS33M30N+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS33M30N+ requirements.
6.How does Aetrix verify that DS33M30N+ is sourced from the original manufacturer or authorized distributors?
All DS33M30N+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS33M30N+ meets industry standards.
7.What is the process for return or replacement of DS33M30N+?
All DS33M30N+ units undergo pre-shipment inspection (PSI). If there is an issue with DS33M30N+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS33M30N+ part is unused and in its original packaging.
Return procedure for DS33M30N+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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