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Microchip Technology VSC7556TSN-V/5CC
- Part No.:
- VSC7556TSN-V/5CC
- Manufacturer:
- Microchip Technology
- Category:
- Telecom
- Package:
- 888-BGA, FCBGA
- Datasheet:
-
VSC7556TSN-V/5CC.pdf
- Description:
- 160G ENTERPRISE ETHERNET SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,663
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Product details
Overview
VSC7556TSN-V/5CC from Microchip is a SparX-5i-160 industrial Ethernet switch IC supporting 160 Gbps nonblocking switching bandwidth, full L2/L3 management, complete IEEE 802.1 TSN feature set (802.1Qbv, 802.1AS-Rev, 802.1CB), and operation from –40°C to +110°C. It integrates a 1 GHz dual-core Arm® CPU with DDR3/DDR4 controller and PCIe 3.0 interface for real-time control in factory automation and substation networks.
For engineers reviewing the VSC7556TSN-V/5CC datasheet, VSC7556TSN-V/5CC pinout, VSC7556TSN-V/5CC application, or VSC7556TSN-V/5CC equivalent, key selection criteria include TSN timing precision (VeriTime™ + SyncE), port flexibility (1G/2.5G/5G/10G/25G support), hardware-accelerated QoS via VCAP-II, industrial temperature rating, and integrated PoE controller compatibility.
Technical Context
The VSC7556TSN-V/5CC implements multistage VCAP-II classification engines for per-port VLAN tagging, ACL enforcement, and frame editing - enabling deterministic traffic shaping and security policy enforcement at line rate. Its VeriTime™ engine delivers sub-100 ns PTP timestamp accuracy compliant with IEEE 1588v2, synchronized across ports via hardware-assisted Best Master Clock Algorithm.
It supports cut-through switching with <1.5 µs latency on 10G ports and preemption-based low-latency forwarding per IEEE 802.1Qbu. The integrated dual-core Arm® Cortex-A9 CPU runs Linux-based management stacks and executes routing protocols (OSPF, BGP) while offloading packet forwarding to dedicated hardware pipelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Bandwidth | 160 Gbps nonblocking - supports full line-rate forwarding across all configured ports without congestion. |
| TSN Compliance | Fully implements 802.1Qbv (time-aware shaper), 802.1AS-Rev (PTP timing), 802.1CB (frame replication), 802.1Qci (stream policing). |
| Operating Temperature | –40°C to +110°C - qualified for extended industrial environments including substations and heavy machinery control cabinets. |
| CPU Core | Dual-core Arm® Cortex-A9 @ 1 GHz - enables concurrent L3 routing, SNMP management, and custom application execution without external host processor. |
| Memory Interface | DDR3/DDR4 SDRAM controller - supports up to 2 GB external memory for routing tables, flow state, and software-defined networking services. |
| PCIe Interface | PCIe 3.0 x4 - provides high-bandwidth host CPU interconnect for centralized control plane or virtualized switch deployments. |
| Timing Accuracy | VeriTime™ with <100 ns PTP timestamp resolution and SyncE EEC Option 2 compliance - ensures sub-microsecond time synchronization across distributed nodes. |
Pinout & Package
25 mm × 25 mm, 484-ball BGA package (0.8 mm pitch), RoHS-compliant, lead-free, thermal pad exposed on underside for enhanced heat dissipation in convection-cooled industrial enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B1–B4, C1–C4 | PCIe 3.0 x4 differential pairs | High-speed host interface supporting hot-plug detection and link training for embedded CPU or FPGA host integration. |
| E1–E8, F1–F8 | SGMII/QSGMII/USXGMII SerDes lanes | Configurable multi-rate PHY interfaces supporting 1G/2.5G/5G/10G/25G Ethernet with auto-negotiation and KR/KR4 FEC. |
| J1–J12 | DDR3/DDR4 address/control bus | 16-bit data bus with 14-bit address, bank select, RAS/CAS/WE, and ODT control for external memory coherency. |
| M1–M4 | VeriTime™ PTP clock inputs | Dedicated differential inputs for 1PPS, 10 MHz reference, and SyncE EEC clock recovery - isolated from digital noise domains. |
| T1–T4 | GPIO / JTAG debug interface | Multi-function pins supporting boundary scan (TCK/TMS/TDO/TDI), reset assertion, and general-purpose I/O for board-level diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| VCAP-II Multistage Classification | Hardware-accelerated 3-stage TCAM-based rule matching enabling simultaneous VLAN translation, ACL enforcement, and DSCP remarking per packet without CPU intervention. |
| Integrated PoE Controller Support | Direct interface to IEEE 802.3bt-compliant PoE PSE ICs - allows unified power and data management for connected cameras, sensors, and actuators. |
| ERPS Ring Protection | Sub-50 ms failover for ring topologies - meets IEC 62439-2 requirements for process automation and physical security systems. |
| Shared Queue Buffer Architecture | 8 queues per port with strict priority + DWRR scheduling - guarantees minimum bandwidth allocation and prevents head-of-line blocking in mixed-criticality traffic. |
| Unified IStaX™ API | Single software abstraction layer supporting L2/L3/TSN configuration across SparX-5i family - reduces firmware porting effort across VSC7546TSN to VSC7558TSN variants. |
Applications
| Factory Automation | Substation Automation |
|---|---|
Use Scenario: Real-time motion control network linking PLCs, servo drives, and HMIs over deterministic Ethernet. IC Role / Device Role / Timing Role: VSC7556TSN-V/5CC acts as central TSN-aware switch enforcing time-triggered traffic schedules and sub-100 ns PTP synchronization across all nodes. Use Value: Enables synchronized multi-axis motion with jitter <1 µs - meeting IEC 61800-7 functional safety timing requirements. | Use Scenario: IEC 61850 GOOSE and SV messaging between protection relays, merging units, and bay controllers. IC Role / Device Role / Timing Role: VSC7556TSN-V/5CC provides hardware-accelerated stream policing (802.1Qci) and frame replication (802.1CB) for zero-loss critical protection traffic. Use Value: Achieves <4 ms end-to-end latency for GOOSE messages and <10 µs time stamping accuracy for sampled values - satisfying IEC 61850-9-3 Class C. |
| Intelligent Transportation | Physical Security |
Use Scenario: Video surveillance backbone aggregating 4K IP cameras, radar sensors, and V2X edge gateways at roadside cabinets. IC Role / Device Role / Timing Role: VSC7556TSN-V/5CC serves as managed aggregation switch with TSN time-aware shaping to prioritize safety-critical radar streams over best-effort video. Use Value: Guarantees <100 µs jitter for radar data delivery - enabling precise vehicle localization and collision avoidance coordination. | Use Scenario: Integrated security network connecting access control panels, biometric readers, thermal imaging cameras, and alarm systems. IC Role / Device Role / Timing Role: VSC7556TSN-V/5CC delivers seamless redundancy (ERPS) and deterministic latency for door unlock commands and intrusion alerts. Use Value: Ensures <50 ms failover during fiber cut events and <2 ms latency for life-safety access control signals - meeting UL 294 and EN 50131-1 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar industrial Ethernet switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSC7552TSN-V/5CC | 128 Gbps switching bandwidth; fewer SerDes lanes (supports up to 48 × 1G/2.5G or 12 × 10G); same TSN feature set and CPU architecture. | Suitable for smaller-scale IIoT nodes where 160 Gbps is not required - e.g., single-machine control cabinets or compact RTUs. | Select VSC7552TSN-V/5CC when port count and aggregate bandwidth needs are lower but identical TSN timing and software compatibility are required. |
| VSC7558TSN-V/5CC | 200 Gbps switching bandwidth; additional SerDes resources (supports up to 8 × 25G or 20 × 10G); same VeriTime™ and VCAP-II implementation. | Targeted at large-scale aggregation switches in smart grid hubs or multi-camera AI inference edge servers requiring maximum throughput. | Choose VSC7558TSN-V/5CC when scaling beyond 160 Gbps or deploying >20 × 10G uplinks is necessary - with full backward compatibility in software and timing stack. |
Compared with VSC7552TSN-V/5CC and VSC7558TSN-V/5CC, the VSC7556TSN-V/5CC offers optimal balance of bandwidth (160 Gbps), TSN determinism, and thermal envelope for mid-tier industrial aggregation - avoiding overdesign in cost-sensitive deployments while retaining full SparX-5i software and timing interoperability.
Availability
VSC7556TSN-V/5CC is available at Aetrix Electronics and suitable for factory automation, substation automation, and intelligent transportation systems requiring stable component supply, long-term lifecycle assurance, and industrial-grade reliability.
Supply support for VSC7556TSN-V/5CC 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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and connectivity solutions for industrial, automotive, and communications markets.
The SparX-5i family, including VSC7556TSN-V/5CC, was designed specifically to enable deterministic, secure, and scalable industrial Ethernet infrastructure - addressing the convergence of OT and IT networks in IIoT deployments.
FAQ
What TSN standards does the VSC7556TSN-V/5CC implement?
The VSC7556TSN-V/5CC implements the full IEEE 802.1 TSN standard suite: 802.1Qbv (time-aware shaper), 802.1Qch (cyclic queuing and forwarding), 802.1Qci (stream policing), 802.1AS-Rev (precision time protocol), 802.1CB (frame replication), and 802.1Qbu (frame preemption). All are hardware-accelerated and validated per IEC/IEEE 60802 for industrial automation use cases.
Does the VSC7556TSN-V/5CC include an integrated CPU?
Yes, the VSC7556TSN-V/5CC integrates a 1 GHz dual-core Arm® Cortex-A9 CPU with NEON SIMD extension, DDR3/DDR4 memory controller, and PCIe 3.0 x4 interface. This enables standalone execution of Linux-based management stacks, routing protocols, and custom applications without requiring an external host processor.
What is the operating temperature range of the VSC7556TSN-V/5CC?
The VSC7556TSN-V/5CC is rated for industrial operation from –40°C to +110°C ambient temperature. It is qualified per AEC-Q100 Grade 2 and tested under extended thermal cycling to ensure reliability in harsh environments such as outdoor substations, rail signaling cabinets, and heavy equipment control panels.
Can the VSC7556TSN-V/5CC support both copper and optical interfaces?
Yes, the VSC7556TSN-V/5CC supports flexible media via its configurable SerDes lanes: SGMII/QSGMII/USXGMII for copper PHYs (1G/2.5G/5G), and KR/KR4 for direct-attach DAC cables or optical modules (10G/25G). Optical support requires external SFP28 or QSFP28 modules interfaced through compliant electrical lanes.
Is the VSC7556TSN-V/5CC pin-compatible with other SparX-5i family members?
No, the VSC7556TSN-V/5CC is not pin-compatible with VSC7546TSN-V/5CC or VSC7552TSN-V/5CC due to differing SerDes lane counts, memory bus widths, and thermal pad configurations. However, it shares the same 25 mm × 25 mm BGA footprint and uses identical IStaX™ software APIs and VeriTime™ timing stack for design reuse.
VSC7556TSN-V/5CC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- VeriTime™
- Package/Case:
- 888-BGA, FCBGA
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Ethernet Switch
- Interface:
- Ethernet
- Number of Circuits:
- 57
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 888-FCBGA (25x25)
VSC7556TSN-V/5CC FAQ
1.How can I place an order for VSC7556TSN-V/5CC through Aetrix?
Please submit a Request for Quotation (RFQ) for VSC7556TSN-V/5CC 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 VSC7556TSN-V/5CC reliable?
The price and inventory of VSC7556TSN-V/5CC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSC7556TSN-V/5CC is usually 5 days.
3.What payment methods are accepted for VSC7556TSN-V/5CC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSC7556TSN-V/5CC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSC7556TSN-V/5CC?
VSC7556TSN-V/5CC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSC7556TSN-V/5CC 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 VSC7556TSN-V/5CC?
For technical support, including VSC7556TSN-V/5CC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSC7556TSN-V/5CC requirements.
6.How does Aetrix verify that VSC7556TSN-V/5CC is sourced from the original manufacturer or authorized distributors?
All VSC7556TSN-V/5CC 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 VSC7556TSN-V/5CC meets industry standards.
7.What is the process for return or replacement of VSC7556TSN-V/5CC?
All VSC7556TSN-V/5CC units undergo pre-shipment inspection (PSI). If there is an issue with VSC7556TSN-V/5CC, 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 VSC7556TSN-V/5CC part is unused and in its original packaging.
Return procedure for VSC7556TSN-V/5CC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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