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Microchip Technology VSC9191XYX
- Part No.:
- VSC9191XYX
- Manufacturer:
- Microchip Technology
- Category:
- Telecom
- Package:
- 613-BGA, FCBGA
- Datasheet:
-
VSC9191XYX.pdf
- Description:
- IC TSI SWITCH 613FCBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,815
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Product details
Overview
VSC9191XYX from Vitesse Semiconductor is a 40×40 non-blocking Time Slot Interchange (TSI) switch for SONET/SDH transport systems, delivering 100 Gbps aggregate bandwidth with dual-rate serial I/O (2.488 Gbps or 622 Mbps), integrated clock synthesis (78/155/311 MHz), and hitless TSI reconfiguration. It serves as a central switching fabric in OC-48/OC-12 line cards and low-order grooming nodes.
For engineers reviewing the VSC9191XYX datasheet, VSC9191XYX pinout, VSC9191XYX application, or VSC9191XYX equivalent, key selection criteria include STS-1-level automatic protection switching (APS), TFI-5 serial interface compliance, overhead monitor port capability, 66 MHz 16-bit microprocessor interface modes, and FCBGA-613 thermal/power behavior under 8 W max.
Technical Context
The VSC9191XYX implements a 1920×1920 STS-1 switching matrix with full non-blocking connectivity across 40 differential serial ports. Each port supports dual-rate operation (2.488 Gbps for OC-48, 622 Mbps for OC-12) and includes integrated clock recovery, SONET/SDH scrambling/deskew, and alarm generation.
It features a multimode 66 MHz 16-bit CPU interface (four programmable modes), one-step connection programming, and flexible split-frame domain support for folded fabric architectures. Overhead byte drop/insert and APS control are implemented at STS-1 granularity without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Matrix Size | 1920 × 1920 STS-1 crosspoint array enabling full non-blocking 40×40 TSI routing |
| Aggregate Bandwidth | 100 Gbps (40 × 2.488 Gbps or 40 × 622 Mbps), supporting OC-48/OC-12 TDM traffic |
| Serial Interface | TFI-5 compliant with 2.488 Gbps (OC-48) and 622 Mbps (OC-12) per lane |
| Clock Synthesis | Integrated PLL with three selectable reference inputs: 78 MHz, 155 MHz, 311 MHz |
| CPU Interface | 66 MHz, 16-bit parallel bus with four configurable interface modes (multiplexed/non-multiplexed, big/little-endian) |
| Power Dissipation | < 6 W typical, < 8 W maximum - enables convection-cooled board designs |
| Package | 33 mm × 33 mm, 613-pin Flip-Chip Ball Grid Array (FCBGA) with 1.0 mm pitch |
Pinout & Package
Package: 33 mm × 33 mm, 613-pin Flip-Chip Ball Grid Array (FCBGA), 1.0 mm ball pitch, RoHS-compliant, thermally enhanced substrate with center thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE / VDD_IO | Power supply rails | Dual-domain supplies: 1.2 V core, 3.3 V I/O; decoupling required per Vitesse layout guidelines |
| CLKIN[2:0] | Reference clock inputs | Accepts 78 MHz, 155 MHz, or 311 MHz crystal or LVPECL reference for internal PLL synthesis |
| TXP/TXN[39:0] | Differential serial outputs | 40 lanes of high-speed TSI data output; pre-emphasis enabled per lane for backplane trace compensation |
| RXP/RXN[39:0] | Differential serial inputs | 40 lanes with integrated CDR and input equalization; supports both OC-48 and OC-12 rates per lane |
| CPUIF[15:0] | Parallel CPU interface | 16-bit bidirectional data bus with separate address/control strobes; supports burst and single-cycle access modes |
| OH_MON[7:0] | Overhead monitor port | 8-bit parallel port for real-time extraction/insertion of SONET/SDH section/path overhead bytes |
Key Features
| Feature | Design Value |
|---|---|
| Hitless TSI reconfiguration | Enables dynamic time-slot remapping without service interruption - critical for live network maintenance |
| STS-1 level APS | Automatic protection switching triggered by LOS/LOF/MS-AIS alarms at STS-1 granularity, reducing failover latency to < 50 ms |
| Integrated clock synthesis | Eliminates need for external clock generators or jitter cleaners; supports three standard SONET/SDH reference frequencies |
| One-step connection programming | Reduces configuration register writes from >100 to a single command for establishing end-to-end TSI paths |
| Folded fabric support | Allows split-frame domain operation across multiple VSC9191XYX devices to construct larger logical fabrics without external time-slot alignment logic |
Applications
| SONET/SDH Line Card Switching | Low-Order TDM Grooming Node |
|---|---|
Use Scenario: Central TSI fabric in 10 Gbps line cards aggregating 8× OC-48 or 20× OC-12 tributaries. IC Role / Device Role / Timing Role: Primary STS-1 time-slot interchanger with embedded clock synthesis and TFI-5 interface to framers. Use Value: Enables single-chip 100 Gbps switching with no external clock ICs or glue logic, reducing BOM count by ≥7 components. | Use Scenario: Edge grooming node consolidating 4× OC-12 feeds into 2× OC-48 outputs for metro aggregation. IC Role / Device Role / Timing Role: Dual-rate TSI switch performing STS-1 cross-connect, overhead monitoring, and APS coordination. Use Value: Hitless reconfiguration allows real-time circuit provisioning without service impact during network upgrades. |
| Multi-Stage Fabric Building Block | SONET/SDH Overhead Monitoring System |
Use Scenario: One of four bit-sliced VSC9191XYX devices forming a 680 Gbps nonblocking fabric with VSC9295 controllers. IC Role / Device Role / Timing Role: Slice-mode TSI unit handling 1/4 of total STS-1 crosspoints; synchronized via common reference clock. Use Value: Scales system capacity while maintaining deterministic latency and eliminating external time-slot alignment hardware. | Use Scenario: Embedded overhead analysis module extracting path/section bytes from live OC-48 streams for performance monitoring. IC Role / Device Role / Timing Role: Dedicated OH_MON port user with real-time byte-level access to A1/A2, J0, B1, B2, C2, G1, F2 registers. Use Value: Provides direct visibility into SONET/SDH layer-1 health metrics without requiring full frame demux or external processor parsing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TSI switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSC9185 | Same 40×40 STS-1 matrix but 160 Gbps aggregate bandwidth; lacks TFI-5 interface and integrated APS logic | Requires external framer interface and APS controller; suited for custom framing or non-SONET protocols | Select VSC9185 only when TFI-5 compliance and autonomous APS are not required |
| VSC9190 | 20×20 TSI + integrated 10 Gbps backplane transceiver; lower density, different I/O architecture | Targeted at hybrid TSI/transceiver roles in compact line cards; not scalable to 40-port configurations | Choose VSC9190 when combining TSI and physical-layer transceiver functions in space-constrained designs |
Compared with VSC9191XYX, VSC9185 offers higher bandwidth but requires external timing and protection logic, while VSC9190 integrates transceiver functionality at the cost of reduced TSI scale - making VSC9191XYX the optimal choice for dedicated, standards-compliant SONET/SDH central switching with minimal external components.
Availability
VSC9191XYX is available at Aetrix Electronics and suitable for SONET/SDH line card development, low-order TDM grooming systems, and multi-stage optical transport fabric builds requiring stable component supply and long-term lifecycle support.
Supply support for VSC9191XYX 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, specializing in SONET/SDH, Ethernet, and storage interconnect solutions before its acquisition by Microsemi in 2015.
The VSC9191XYX belongs to Vitesse's TSI Switch Family, engineered specifically for carrier-grade optical transport equipment requiring deterministic STS-1 switching, hitless reconfiguration, and integrated SONET/SDH physical-layer functions.
FAQ
What is the primary function of the VSC9191XYX in SONET/SDH systems?
The VSC9191XYX functions as a 40×40 non-blocking Time Slot Interchange (TSI) switch, enabling full STS-1 cross-connection across 40 differential serial ports. It performs hitless time-slot remapping, automatic protection switching at STS-1 level, and overhead byte monitoring - all within a single device. Its TFI-5 interface directly connects to SONET/SDH framers, making VSC9191XYX the central switching element in OC-48/OC-12 line cards and grooming nodes.
Does the VSC9191XYX support both OC-48 and OC-12 data rates on the same port?
Yes, each of the 40 serial I/O lanes on the VSC9191XYX supports dual-rate operation: 2.488 Gbps for OC-48 and 622 Mbps for OC-12. Rate selection is per-lane and configurable via the CPU interface. The device handles rate adaptation internally, including clock recovery, deskew, and SONET/SDH framing - allowing mixed-rate configurations without external rate converters or retimers.
What clock references does the VSC9191XYX accept for its integrated synthesizer?
The VSC9191XYX accepts three standard SONET/SDH reference frequencies: 78.336 MHz (for OC-48), 155.52 MHz (for OC-192), and 311.04 MHz (for OC-768). These are fed to dedicated CLKIN[2:0] pins and used by the on-chip PLL to generate all internal clocks required for TSI operation, serialization, and CPU interface timing - eliminating need for external clock generators.
How does the VSC9191XYX implement automatic protection switching (APS)?
The VSC9191XYX implements STS-1–level APS using built-in alarm detection (LOS, LOF, MS-AIS) and hardware-controlled switchover logic. When an alarm is detected on an active path, the device automatically reroutes traffic to a preconfigured protection path within <50 ms - without CPU intervention. APS status and control are accessible via dedicated CPU interface registers, and the OH_MON port allows real-time verification of protection state.
Is the VSC9191XYX pin-compatible with other devices in the Vitesse TSI family?
No, the VSC9191XYX is not pin-compatible with other Vitesse TSI devices such as VSC9185 or VSC9190. It uses a unique 613-pin FCBGA package optimized for its 40-lane serial I/O and 16-bit CPU interface. While functional overlap exists in TSI matrix size (e.g., VSC9185 is also 40×40), differences in I/O architecture, power domains, and pin assignment prevent mechanical or electrical interchangeability.
VSC9191XYX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 613-BGA, FCBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Switch
- Interface:
- Serial
- Number of Circuits:
- 1
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- 8 W
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 613-FCBGA (33x33)
VSC9191XYX FAQ
1.How can I place an order for VSC9191XYX through Aetrix?
Please submit a Request for Quotation (RFQ) for VSC9191XYX 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 VSC9191XYX reliable?
The price and inventory of VSC9191XYX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSC9191XYX is usually 5 days.
3.What payment methods are accepted for VSC9191XYX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSC9191XYX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSC9191XYX?
VSC9191XYX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSC9191XYX 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 VSC9191XYX?
For technical support, including VSC9191XYX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSC9191XYX requirements.
6.How does Aetrix verify that VSC9191XYX is sourced from the original manufacturer or authorized distributors?
All VSC9191XYX 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 VSC9191XYX meets industry standards.
7.What is the process for return or replacement of VSC9191XYX?
All VSC9191XYX units undergo pre-shipment inspection (PSI). If there is an issue with VSC9191XYX, 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 VSC9191XYX part is unused and in its original packaging.
Return procedure for VSC9191XYX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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