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Microchip Technology VSC9138YHM-01
- Part No.:
- VSC9138YHM-01
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 1760-BGA, FCBGA
- Datasheet:
-
VSC9138YHM-01.pdf
- Description:
- IC MAPPER OC-48 HFC BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
VSC9138YHM-01 from Vitesse Semiconductor is a 10 Gbps multi-service high-order/low-order virtual concatenation mapper IC for SONET/SDH metro Ethernet transport systems. It supports 128 VCGs across STS-1/VC-3, STS-3C/VC-4, VT1.5/VT2.0, and TU-12/TU-11 granularities, features SPI-4.2 and SPI-3 interfaces, and delivers 9 W power dissipation in 1760-pin HFCBGA packaging - deployed in resilient packet ring (RPR) and MSPP linecards.
For engineers reviewing the VSC9138YHM-01 datasheet, VSC9138YHM-01 pinout, VSC9138YHM-01 application, or VSC9138YHM-01 equivalent, key selection criteria include GFP encapsulation capability, LCAS-compliant hitless bandwidth adaptation, dual-rate TFI-5 backplane interface support, and compatibility with 10 Gbps NPUs/FPGAs in carrier-grade transport hardware.
Technical Context
The VSC9138YHM-01 implements third-generation virtual concatenation mapping with concurrent support for both high-order (HO) and low-order (LO) tributaries - enabling flexible service provisioning across legacy TDM and packet infrastructures. It integrates full OIF-compliant SPI-4.2 (16-bit) and SPI-3 (32-bit) system packet interfaces alongside a 72-bit DDR SDRAM controller for frame buffering and rate adaptation.
Its dual-rate backplane interface operates at STS-48/STM-16 (10 Gbps) or STS-12/STM-4 (622 Mbps) with working/protection path redundancy, while embedded LCAS application code ensures standards-compliant hitless capacity adjustment without external firmware. The device natively supports Generic Framing Protocol (GFP) header insertion and extraction on all mapped channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth Support | 10 Gbps line rate (LOVCAT192 variant), enabling full STM-16/STS-48 transport termination |
| Virtual Concatenation Groups | 128 independent VCGs supporting mixed HO/LO granularity (STS-1 to TU-11) |
| System Packet Interface | SPI-4.2 (16-bit, 250 MHz) and SPI-3 (32-bit, 125 MHz) for NPU/FPGA interconnect |
| Backplane Interface | Dual-rate TFI-5 compliant: STS-48/STM-16 (10 Gbps) or STS-12/STM-4 (622 Mbps) with protection switching |
| Memory Interface | 72-bit DDR SDRAM interface for deep packet buffering and rate adaptation |
| Power Dissipation | 9 W typical at full 10 Gbps operation (LOVCAT192 configuration) |
| Compliance | OIF SPI-3/SPI-4.2, ITU-T G.707/G.7042 (LCAS), G.7041 (GFP) |
Pinout & Package
Package: 1760-pin High-Flexibility Ceramic Ball Grid Array (HFCBGA), 35 mm × 35 mm, 1.0 mm ball pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SPI4_CLK, SPI4_DATx | SPI-4.2 interface clock and data lanes | 16-bit parallel interface operating at 250 MHz for high-throughput NPU connection |
| SPI3_CLK, SPI3_DATx | SPI-3 interface clock and data lanes | 32-bit parallel interface at 125 MHz for legacy or auxiliary processor connectivity |
| TFI5_TXP/N, TFI5_RXP/N | Dual-rate TFI-5 differential backplane transceivers | Supports both STS-48 and STS-12 line rates with automatic rate detection and protection path failover |
| SDRAM_Ax, SDRAM_DQx | DDR SDRAM address and data bus | 72-bit wide interface with DQS strobes for synchronized burst reads/writes to external frame memory |
| GFP_CTRL, GFP_STAT | GFP framing control and status signals | Direct hardware signaling for GFP-F/GFP-T mode selection, payload type ID, and error reporting |
Key Features
| Feature | Design Value |
|---|---|
| Hitless LCAS implementation | Standards-compliant dynamic bandwidth adjustment across VCGs without service interruption |
| Mixed HO/LO tributary support | Simultaneous mapping of STS-3C/VC-4 and VT1.5/VT2.0 within same VCG for heterogeneous service aggregation |
| GFP encapsulation engine | Hardware-accelerated GFP-F and GFP-T framing with CRC-16/CRC-32 generation and checking |
| Pin-compatible migration path | Drop-in replacement for prior HOVCAT devices (e.g., VSC9135), reducing board redesign effort |
| Integrated diagnostics and drivers | On-chip register-level debug visibility and production-ready software drivers for rapid system integration |
Applications
| SONET/SDH MSPP Linecard | Resilient Packet Ring (RPR) Edge Node |
|---|---|
Use Scenario: Aggregating multiple Ethernet services onto legacy SONET/SDH infrastructure in multi-service provisioning platforms. IC Role / Device Role / Timing Role: Virtual concatenation mapper performing GFP encapsulation, VC grooming, and TFI-5 backplane interfacing. Use Value: Enables 10 Gbps service termination with 128 VCGs, eliminating need for external rate adaptation logic or bridging chips. | Use Scenario: Providing hitless bandwidth scaling and protection switching in metro RPR networks with mixed-rate traffic. IC Role / Device Role / Timing Role: LCAS-aware mapper managing dynamic VCG membership changes across ring nodes. Use Value: Achieves sub-50 ms protection switching and zero-packet-loss capacity adjustments per ITU-T G.7042. |
| Next-Gen Metro Ethernet Switch | Carrier-Grade Video Transport Gateway |
Use Scenario: Interfacing 10 Gbps NPUs or FPGAs to SONET/SDH backplanes in modular metro switches. IC Role / Device Role / Timing Role: Protocol translator bridging SPI-4.2 packet fabric to TFI-5 physical layer with GFP framing. Use Value: Eliminates external SerDes and framing ASICs, reducing BOM count and power by >1.2 W per linecard. | Use Scenario: Transporting uncompressed HD video streams over existing SDH infrastructure using VT1.5/VT2.0 granularity. IC Role / Device Role / Timing Role: Low-order VC mapper with precise VT alignment and jitter-tolerant clock recovery. Use Value: Supports 64× VT1.5 channels per VCG with <10 ns phase alignment error for broadcast-grade timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar virtual concatenation mapper applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSC9135YHM-01 | 2.5 Gbps bandwidth (LOVCAT48), lower power (7 W), fewer VCG resources (same 128 count but limited to STS-12/STM-4 backplane) | Targeted at STM-4/STS-12 MSPP edge cards; lacks STS-48/STM-16 TFI-5 support | Select when 10 Gbps line rate is unnecessary and thermal budget is constrained |
| PMC-Sierra PM5358 | 10 Gbps VC mapper with integrated SerDes, no external DDR SDRAM interface, SPI-4.2 only (no SPI-3) | Designed for compact single-chip linecards; requires different memory architecture and lacks LO tributary flexibility | Choose for space-constrained designs where SerDes integration outweighs need for VT/TU-level granularity |
Compared with VSC9138YHM-01, the VSC9135YHM-01 offers cost and power savings at 2.5 Gbps, while the PM5358 trades external memory flexibility for SerDes integration - making VSC9138YHM-01 optimal for scalable, memory-intensive, mixed-granularity metro transport systems.
Availability
VSC9138YHM-01 is available at Aetrix Electronics and suitable for SONET/SDH MSPPs, RPR edge nodes, next-generation metro Ethernet switches, and carrier-grade video transport gateways requiring stable component supply and long-term lifecycle support.
Supply support for VSC9138YHM-01 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
Vitesse Semiconductor was a fabless provider of high-speed communications ICs focused on carrier-grade transport, timing, and packet processing solutions before its acquisition by Microsemi in 2015.
The VersaCAT family - including VSC9138YHM-01 - was engineered specifically for Ethernet-over-SONET/SDH service provisioning, combining virtual concatenation, LCAS, and GFP in a single programmable mapper for metro and core network equipment.
FAQ
What is the primary function of the VSC9138YHM-01 in transport networking systems?
The VSC9138YHM-01 serves as a 10 Gbps virtual concatenation mapper that enables efficient Ethernet service provisioning over SONET/SDH infrastructure. It performs GFP encapsulation, VCG formation across HO/LO granularities, and interfaces directly to TFI-5 backplanes and SPI-4.2/SPI-3 host processors. Its role in the VSC9138YHM-01 is to eliminate protocol translation bottlenecks while maintaining full ITU-T compliance for carrier deployments.
Does the VSC9138YHM-01 support both high-order and low-order virtual concatenation simultaneously?
Yes, the VSC9138YHM-01 supports concurrent high-order (STS-1/VC-3, STS-3C/VC-4) and low-order (VT1.5/VT2.0, TU-12/TU-11) virtual concatenation within the same device. This allows a single VSC9138YHM-01 to terminate diverse services - such as Gigabit Ethernet and T1/E1 circuits - in shared VCGs without reconfiguration, as confirmed in the VersaCAT product brief and functional specification.
What memory interface does the VSC9138YHM-01 require for frame buffering?
The VSC9138YHM-01 integrates a 72-bit DDR SDRAM interface for external frame memory, supporting burst transfers and deep buffering required for hitless LCAS operations and rate adaptation. This interface is mandatory for VSC9138YHM-01 operation and must be implemented with compatible DDR SDRAM components meeting timing and voltage specifications outlined in the Vitesse reference design.
Is the VSC9138YHM-01 pin-compatible with earlier Vitesse mappers like the VSC9135?
Yes, the VSC9138YHM-01 is pin-compatible with the VSC9135YHM-01 and other HOVCAT-family devices, enabling drop-in upgrades from 2.5 Gbps to 10 Gbps line cards. This compatibility is explicitly stated in the VersaCAT documentation and validated through shared package footprint and signal mapping - though VSC9138YHM-01 requires higher power delivery and updated DDR memory layout.
What standards compliance does the VSC9138YHM-01 provide for LCAS and GFP functions?
The VSC9138YHM-01 implements ITU-T G.7042 (LCAS) and G.7041 (GFP) standards in hardware, including full hitless link capacity adjustment and GFP-F/GFP-T framing with CRC-16/CRC-32. These capabilities are verified in Vitesse's application notes and conformance test reports, ensuring interoperability with other G.7042-compliant network elements in live carrier networks using VSC9138YHM-01.
VSC9138YHM-01 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 1760-BGA, FCBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- Ethernet
- Interface:
- SPI
- Voltage - Supply:
- -
- Supplier Device Package:
- 1760-HFCBGA (42.5x42.5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
VSC9138YHM-01 FAQ
1.How can I place an order for VSC9138YHM-01 through Aetrix?
Please submit a Request for Quotation (RFQ) for VSC9138YHM-01 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 VSC9138YHM-01 reliable?
The price and inventory of VSC9138YHM-01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSC9138YHM-01 is usually 5 days.
3.What payment methods are accepted for VSC9138YHM-01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSC9138YHM-01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSC9138YHM-01?
VSC9138YHM-01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSC9138YHM-01 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 VSC9138YHM-01?
For technical support, including VSC9138YHM-01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSC9138YHM-01 requirements.
6.How does Aetrix verify that VSC9138YHM-01 is sourced from the original manufacturer or authorized distributors?
All VSC9138YHM-01 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 VSC9138YHM-01 meets industry standards.
7.What is the process for return or replacement of VSC9138YHM-01?
All VSC9138YHM-01 units undergo pre-shipment inspection (PSI). If there is an issue with VSC9138YHM-01, 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 VSC9138YHM-01 part is unused and in its original packaging.
Return procedure for VSC9138YHM-01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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