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Microchip Technology VSC7420XJQ-02
- Part No.:
- VSC7420XJQ-02
- Manufacturer:
- Microchip Technology
- Category:
- Telecom
- Package:
- -
- Datasheet:
-
VSC7420XJQ-02.pdf
- Description:
- IC TELECOM INTERFACE 302TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,452
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Product details
Overview
VSC7420XJQ-02 from Microsemi (now Microchip) is a fully managed 5-port Gigabit Ethernet switch IC with integrated 4× 10/100/1000BASE-T copper PHYs and 1× 1000BASE-X SERDES interface, supporting Layer-2 switching, QoS, VLAN, ACL, and IEEE 802.3af PoE management - deployed in industrial Ethernet I/O modules and ruggedized edge gateways.
For engineers reviewing the VSC7420XJQ-02 datasheet, VSC7420XJQ-02 pinout, VSC7420XJQ-02 application, or VSC7420XJQ-02 equivalent, this device requires evaluation of its embedded VCore-Ie CPU, SERDES6G clocking architecture, per-port energy-efficient Ethernet (EEE) support, and hardware-accelerated frame rewriting for deterministic low-latency forwarding in time-sensitive networking (TSN)-adjacent deployments.
Technical Context
The VSC7420XJQ-02 implements a non-blocking 10 Gbps shared memory switch fabric with hardware-based MAC learning, VLAN-aware forwarding, and dual-stage policing (per-port + per-flow). Its VCore-Ie RISC CPU executes firmware for management plane tasks including SNMP agent, CLI, and web server - eliminating need for external host processor in standalone switch designs.
It integrates SERDES6G transceivers supporting 1000BASE-X and SGMII, plus four copper PHYs with VeriPHY™ cable diagnostics, ActiPHY™ power management, and full IEEE 802.3az EEE compliance. Frame processing includes hardware classifier (DSCP/VLAN/IP), rewriter (VLAN edit/DSCP remark), and egress scheduler with DWRR + shaping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Ports | 5 total: 4× 10/100/1000BASE-T + 1× 1000BASE-X/SGMII SERDES |
| Switch Fabric Capacity | 10 Gbps non-blocking throughput; enables full line-rate forwarding on all ports simultaneously |
| VCore-Ie CPU | 32-bit RISC core running at 200 MHz; executes embedded switch firmware without external host |
| Memory Interface | External SPI flash boot + optional DDR2/DDR3 via 16-bit bus; supports up to 256 MB external RAM |
| IEEE Compliance | Fully compliant with 802.1Q VLAN, 802.1p QoS, 802.1ad Q-in-Q, 802.3az EEE, and 802.3af PoE management |
| Temperature Range | –40°C to +105°C junction; qualified for industrial and extended-temperature embedded applications |
| Package | 256-pin LFBGA (15 mm × 15 mm, 0.8 mm pitch); RoHS-compliant, lead-free |
Pinout & Package
Package: 256-pin Fine-Pitch Ball Grid Array (LFBGA), 15 mm × 15 mm, 0.8 mm ball pitch, 1.2 mm height, RoHS-compliant. Thermal pad exposed on underside for PCB heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE | Core power supply | 1.0 V ±3% supply for digital logic and VCore-Ie CPU; requires low-noise regulation |
| VDD_IO | I/O power supply | 3.3 V supply for MII/RMII/SPI/UART/GPIO interfaces; tolerant of 3.0–3.6 V range |
| REFCLK_25 | Reference clock input | 25 MHz crystal or oscillator input for internal PLL; used to derive all switch and PHY clocks |
| MDIO / MDC | PHY management interface | Shared MDIO/MDC bus for configuration and monitoring of all 4 copper PHYs |
| SGMII_RX / TX | SERDES6G serial interface | Differential pair for 1000BASE-X or SGMII connection to fiber or FPGA/ASIC |
| GPIO[7:0] | General-purpose I/O | 8 configurable pins supporting LED control, interrupt signaling, reset coordination, or PoE status reporting |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Classifier | Per-frame extraction of VLAN ID, DSCP, IP protocol, source/dest MAC - enabling real-time QoS and ACL decisions without CPU overhead |
| VeriPHY™ Cable Diagnostics | On-chip TDR-based fault location for UTP cables up to 100 m; reports open/short distance and pair skew without external tools |
| ActiPHY™ Power Management | Three-state low-power operation (sleep/wake/active); reduces 1000BASE-T port power to <150 mW during idle |
| Embedded VCore-Ie CPU | Integrated 200 MHz RISC processor with 128 KB SRAM and boot ROM; runs full L2 management stack out-of-box |
| Frame Rewriter | Hardware-accelerated VLAN tag insertion/removal, DSCP remarking, and FCS recalculation - ensures sub-microsecond latency per modified frame |
Applications
| Industrial Ethernet I/O Module | Rugged Edge Gateway |
|---|---|
|
Use Scenario: DIN-rail mounted PLC expansion module aggregating sensor data from 4 field devices over twisted-pair Ethernet. IC Role / Device Role / Timing Role: Standalone Layer-2 switch with embedded CPU handles VLAN segmentation, QoS tagging, and local web-based diagnostics - no host processor required. Use Value: Reduces BOM cost and board area by eliminating external microcontroller; VeriPHY™ enables remote cable health monitoring in inaccessible locations. |
Use Scenario: Outdoor telecom cabinet gateway connecting legacy RS-485 fieldbus to cloud via fiber uplink. IC Role / Device Role / Timing Role: Switch IC provides 4 copper ports for fieldbus termination and 1 SERDES port for fiber backhaul; manages PoE power to connected radios. Use Value: Single-chip solution supports -40°C to +105°C operation and delivers deterministic latency (<5 µs store-and-forward) for time-critical SCADA traffic. |
| Smart Building Controller | Time-Sensitive Networking Node |
|
Use Scenario: HVAC controller integrating lighting, access control, and environmental sensors across a building LAN. IC Role / Device Role / Timing Role: Managed switch enforces priority queuing (802.1p), port-based VLANs, and ACLs to isolate critical life-safety traffic from best-effort data. Use Value: Hardware-based policing prevents bandwidth starvation; integrated PoE management powers door controllers and IP cameras directly. |
Use Scenario: Deterministic network node synchronizing motion-control drives in factory automation. IC Role / Device Role / Timing Role: Switch performs precise timestamping, frame preemption prep, and egress scheduling aligned to IEEE 802.1AS grandmaster clock. Use Value: Sub-microsecond jitter in egress scheduling and hardware classifier enable cycle-consistent forwarding for TSN Class A traffic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar managed Gigabit Ethernet switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Marvell 88E6352 | No embedded CPU; requires external host for L2 management; supports 7 ports (5× copper + 2× SERDES) | Better suited for host-controlled switches where firmware resides externally; lacks ActiPHY™/VeriPHY™ diagnostics | Select when design already includes ARM host and prioritizes port count over autonomous operation |
| Microchip KSZ9897RT | 7-port switch with integrated 3× PHYs and 2× RGMII; no SERDES; uses MIPS CPU instead of VCore-Ie | Targeted at cost-sensitive consumer routers; lacks industrial temp grade and PoE management capability | Select for commercial-grade applications requiring lower unit cost and simpler thermal design |
Compared with Marvell 88E6352 and Microchip KSZ9897RT, the VSC7420XJQ-02 uniquely combines industrial temperature operation, embedded CPU autonomy, SERDES+PHY integration, and advanced diagnostics - making it optimal for headless, ruggedized edge nodes where reliability and self-containment outweigh raw port count.
Availability
VSC7420XJQ-02 is available at Aetrix Electronics and suitable for industrial Ethernet I/O modules, rugged edge gateways, smart building controllers, and time-sensitive networking nodes requiring stable component supply across extended product lifecycles.
Supply support for VSC7420XJQ-02 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
Microsemi - now part of Microchip Technology - specialized in high-reliability semiconductor solutions for aerospace, defense, communications, and industrial markets before its 2018 acquisition.
The VSC7420XJQ-02 belongs to Microsemi's VSC742x family of embedded Ethernet switches, designed specifically for headless, fanless, and thermally constrained industrial networking equipment requiring autonomous operation and long-term availability.
FAQ
What is the operating temperature range supported by the VSC7420XJQ-02?
The VSC7420XJQ-02 is rated for industrial operation from –40°C to +105°C junction temperature. This specification is validated per JEDEC JESD22-A104 and applies to continuous operation under full load with appropriate PCB thermal design - making it suitable for uncooled DIN-rail enclosures and outdoor telecom cabinets where ambient extremes occur.
Does the VSC7420XJQ-02 include an integrated processor, and what is its role?
Yes, the VSC7420XJQ-02 integrates a 200 MHz VCore-Ie RISC CPU with 128 KB on-chip SRAM and boot ROM. This processor executes the full Layer-2 management stack - including SNMP, CLI, web server, and PoE control - enabling completely autonomous switch operation without requiring an external host microcontroller.
Can the VSC7420XJQ-02 support IEEE 802.3af Power over Ethernet (PoE)?
The VSC7420XJQ-02 supports IEEE 802.3af PoE management but does not provide power sourcing. It monitors and controls external PoE PSE controllers (e.g., Microchip PD692xx series) via I²C or GPIO, enabling classification, detection, power allocation, and fault reporting - all handled in firmware on the embedded VCore-Ie CPU.
What diagnostic capabilities does the VSC7420XJQ-02 offer for copper cabling?
The VSC7420XJQ-02 features VeriPHY™ - a patented TDR-based cable diagnostic engine that measures length, detects opens/shorts, identifies pair swaps, and reports impedance mismatches up to 100 meters. Results are accessible via register reads or CLI commands, enabling remote troubleshooting without physical access to endpoints.
How does the VSC7420XJQ-02 handle energy efficiency in low-traffic conditions?
The VSC7420XJQ-02 implements ActiPHY™ power management across all four copper PHYs, dynamically transitioning between Normal Operating State, Link Partner Wake-up State, and Low Power State. In idle, per-port power drops below 150 mW while maintaining link detection - reducing total system power by >60% versus standard 1000BASE-T PHYs.
VSC7420XJQ-02 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SparX™-III-10um
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Ethernet Switch
- Interface:
- Serial
- Number of Circuits:
- 1
- Voltage - Supply:
- 1V
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 302-TQFP (24x24)
VSC7420XJQ-02 FAQ
1.How can I place an order for VSC7420XJQ-02 through Aetrix?
Please submit a Request for Quotation (RFQ) for VSC7420XJQ-02 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 VSC7420XJQ-02 reliable?
The price and inventory of VSC7420XJQ-02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSC7420XJQ-02 is usually 5 days.
3.What payment methods are accepted for VSC7420XJQ-02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSC7420XJQ-02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSC7420XJQ-02?
VSC7420XJQ-02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSC7420XJQ-02 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 VSC7420XJQ-02?
For technical support, including VSC7420XJQ-02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSC7420XJQ-02 requirements.
6.How does Aetrix verify that VSC7420XJQ-02 is sourced from the original manufacturer or authorized distributors?
All VSC7420XJQ-02 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 VSC7420XJQ-02 meets industry standards.
7.What is the process for return or replacement of VSC7420XJQ-02?
All VSC7420XJQ-02 units undergo pre-shipment inspection (PSI). If there is an issue with VSC7420XJQ-02, 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 VSC7420XJQ-02 part is unused and in its original packaging.
Return procedure for VSC7420XJQ-02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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