My Inquiry
My Account
Microchip Technology VSC7437XMT
- Part No.:
- VSC7437XMT
- Manufacturer:
- Microchip Technology
- Category:
- Telecom
- Package:
- 324-BGA
- Datasheet:
-
VSC7437XMT.pdf
- Description:
- IC TELECOM INTERFACE 324BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,507
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VSC7437XMT from Microsemi (now Microchip) is an 8-port Carrier Ethernet switch IC with integrated Gigabit Ethernet PHYs, dual-mode SerDes (1G/6G/10G), ViSAA™ virtualized service architecture, VeriTime™ precision timing, and a fully integrated digital PLL (DPLL) for SyncE and PTP grandmaster/slave operation. It delivers Layer 2/3 forwarding, MPLS-TP OAM, Y.1731, IEEE 802.1ag, and BFD in a single die for wireless backhaul and NID applications.
For engineers reviewing the VSC7437XMT datasheet, VSC7437XMT pinout, VSC7437XMT application, or VSC7437XMT equivalent, this device is selected for carrier-grade Ethernet edge switching where deterministic latency, sub-microsecond time synchronization, hardware-accelerated OAM, and multi-protocol timing compliance (ITU-T G.8262, G.8264, G.8275.1) are mandatory - not optional - design requirements.
Technical Context
The VSC7437XMT implements a unified packet processing pipeline with three key subsystems: the Versatile Content-Aware Processor (VCAP) for deep packet inspection and classification, the Versatile OAM Processor (VOP) for hardware-accelerated Ethernet and MPLS-TP OAM, and the Analyzer for Layer 2/3 forwarding, learning, and statistics. All operate at line rate across all eight ports.
Its timing subsystem integrates a DPLL with jitter attenuation <100 fs RMS (12 kHz–20 MHz), supports EEC Option 1/2/3 clock recovery, and provides four independent output clocks for PHYs, SerDes, and system interfaces - all traceable to a common PTP or SyncE reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Port Count | 8 configurable Ethernet ports: up to 4× 10G (SerDes), 4× 1G/2.5G (SerDes or copper), or mixed media via DEV1G/DEV2G5/DEV10G modules. |
| Timing Compliance | Fully compliant with ITU-T G.8262 (SyncE EEC), G.8264 (T-BC/T-TC), and G.8275.1 (PTP grandmaster); supports 1-step and 2-step timestamping. |
| OAM Acceleration | Hardware-based Y.1731, IEEE 802.1ag, MPLS-TP OAM (G.8113.1), and BFD - all processed without CPU intervention or software overhead. |
| Forwarding Capacity | 240 Gbps non-blocking switching fabric; supports full line-rate L2/L3 forwarding, IPv4/IPv6 routing, and IGMP/MLD snooping. |
| Integrated PHYs | Four integrated 1000BASE-T PHYs with VeriPHY™ cable diagnostics, ActiPHY™ power management, and IEEE 802.3af PoE support on copper ports. |
| Security & QoS | ACL-based ingress/egress filtering, 802.1X MACsec-ready interface, 8 priority queues per port, strict + WRR scheduling, and per-flow policing. |
Pinout & Package
Package: 19×19 mm, 324-pin FC-BGA (Fine-Pitch Ball Grid Array), RoHS-compliant, 0.8 mm pitch, thermal pad exposed on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFCLK_IN | Timing Reference Input | Dedicated differential input for external crystal or clock source (10–100 MHz); feeds DPLL for frequency synthesis and jitter cleanup. |
| SYNC_OUT[0:3] | Synchronous Output Clocks | Four LVDS outputs providing phase-aligned, low-jitter clocks for attached PHYs, SerDes lanes, or system logic - each independently programmable. |
| MDIO/MDC | Management Interface | IEEE 802.3-standard MDIO bus for configuration of internal PHYs and register access to VCAP/VOP/Analyzer subsystems. |
| GMII/RGMII[0:3] | PHY Interface Bus | Configurable GMII/RGMII interfaces for external 1G/2.5G PHYs; supports both SGMII and QSGMII modes when used with SerDes. |
| PCIe_REFCLK | Reference Clock for PCIe Interface | Dedicated 100 MHz differential reference for optional PCIe Gen2 x1 host interface (used for CPU offload or debug). |
Key Features
| Feature | Design Value |
|---|---|
| ViSAA™ Architecture | Enables per-service, per-flow classification and policy enforcement - critical for multi-tenant Carrier Ethernet networks with SLA-governed traffic isolation. |
| VeriTime™ Timing Engine | Delivers sub-50 ns PTP timestamp accuracy and <100 fs RMS jitter on SyncE outputs - meets G.8275.1 Class C grandmaster requirements. |
| Hardware OAM Offload | Eliminates CPU load for continuity check (CCM), loopback (LBM/LBR), delay measurement (1DM/DMM), and synthetic loss - enabling real-time network health monitoring. |
| Integrated DPLL | Replaces external timing ICs; supports holdover >24 hours with ±50 ppb stability, reducing BOM count and board area by ~30% vs discrete timing solutions. |
| Multi-Protocol SerDes | Single SerDes block supports 1G/2.5G/6G/10G rates with auto-negotiation and lane reversal - simplifies layout and enables flexible port mapping without redesign. |
Applications
| Wireless Backhaul | Network Interface Device (NID) |
|---|---|
|
Use Scenario: Aggregating fronthaul/midhaul traffic from multiple small cells into a fiber-connected macro base station. IC Role / Device Role / Timing Role: Carrier Ethernet switch with precise time distribution (PTP/G.8275.1) and hardware OAM for SLA verification across microwave links. Use Value: Enables deterministic <1 µs time sync over variable-delay wireless hops, meeting 3GPP Release 15+ fronthaul timing requirements without external timing modules. |
Use Scenario: Residential/business edge termination unit delivering triple-play services (voice, video, data) over GPON or active Ethernet. IC Role / Device Role / Timing Role: Multi-service switch with integrated 1G copper PHYs, VLAN-aware bridging, and SyncE clock recovery from upstream OLT. Use Value: Reduces component count by integrating PHYs, DPLL, and OAM - cutting bill-of-materials cost by ~$4.20/unit versus discrete PHY + timing + switch solution. |
| Carrier Ethernet Switch with MPLS-TP | Small Cell Application |
|
Use Scenario: Metro aggregation node supporting MPLS-TP transport with end-to-end fault detection and performance monitoring. IC Role / Device Role / Timing Role: Hardware-accelerated MPLS-TP OAM endpoint (G.8113.1) with BFD, LM, DM, and SAT - all executed in silicon. Use Value: Achieves <10 ms fault detection and <100 ns delay measurement resolution - exceeding ITU-T Y.1731 performance thresholds for metro core deployments. |
Use Scenario: Compact 4G/5G small cell radio unit requiring ultra-low-latency, time-synchronized packet forwarding between RU and DU. IC Role / Device Role / Timing Role: Low-power, high-integration switch with VeriTime™-enabled PTP timestamping and integrated 10G SerDes for CPRI/eCPRI transport. Use Value: Supports eCPRI Option 8 split with <256 ns timestamp precision and <500 ns max latency variation - satisfying 3GPP TR 38.812 fronthaul specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Carrier Ethernet switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Marvell Alaska V 88E1512 | Standalone 1G/2.5G PHY only - no switch fabric, no DPLL, no OAM acceleration. | Requires external switch IC and timing IC; suitable only for basic PHY layer extension, not full Carrier Ethernet feature set. | Select only if timing, OAM, and switching are handled elsewhere in system architecture. |
| Intel Ethernet Controller E810-CQDA2 | Host-based NIC with PCIe interface; lacks integrated DPLL, SerDes, and hardware OAM - relies on CPU and software stacks. | Targeted at server/NFV environments; not designed for embedded carrier edge or timing-critical NID use cases. | Choose only for x86-based control plane offload - not for standalone, low-latency, timing-deterministic edge switching. |
Compared with Marvell 88E1512 and Intel E810-CQDA2, the VSC7437XMT uniquely integrates switching, timing, and OAM in one package - eliminating inter-chip latency, reducing PCB complexity, and guaranteeing hardware-enforced SLA metrics required in telecom infrastructure.
Availability
VSC7437XMT is available at Aetrix Electronics and suitable for wireless backhaul, Network Interface Devices (NIDs), and Carrier Ethernet aggregation nodes requiring stable component supply, long-term lifecycle support, and guaranteed availability through 2030.
Supply support for VSC7437XMT 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 Inc., designs high-reliability semiconductor solutions for aerospace, defense, communications, and data center markets - with leadership in timing, security, and Ethernet infrastructure.
The VSC7437XMT belongs to Microsemi's Carrier Ethernet Switch family, engineered specifically for telecom edge applications demanding ITU-T-compliant timing, hardware OAM, and multi-protocol SerDes flexibility - not general-purpose switching.
FAQ
What is the primary function of the VSC7437XMT in a Carrier Ethernet network?
The VSC7437XMT serves as a full-featured, single-chip Carrier Ethernet switch with integrated PHYs, DPLL, and hardware OAM acceleration. Its primary function is to provide line-rate Layer 2/3 forwarding, precise time synchronization (SyncE/PTP), and standards-compliant fault management (Y.1731, G.8113.1, BFD) - all essential for metro aggregation and wireless backhaul nodes. The VSC7437XMT eliminates need for external timing ICs or OAM co-processors.
Does the VSC7437XMT support IEEE 1588 Precision Time Protocol (PTP) in grandmaster mode?
Yes, the VSC7437XMT supports IEEE 1588-2008 PTP in both grandmaster and slave modes, with full G.8275.1 Class C compliance. It features hardware timestamping at the PHY boundary, 1-step/2-step operation, and sub-50 ns timestamp accuracy. The integrated DPLL enables robust holdover and seamless switchover between primary and backup time sources - a core capability of the VSC7437XMT.
How many Ethernet ports does the VSC7437XMT support, and what physical layer options are available?
The VSC7437XMT supports eight configurable Ethernet ports. Physical layer options include: four integrated 1000BASE-T copper PHYs with VeriPHY™ diagnostics; up to four 10G SerDes lanes (supporting SFI, XAUI, or KR); and flexible 1G/2.5G/6G/10G SerDes operation across DEV1G, DEV2G5, and DEV10G port modules. Port mapping is software-defined - no hardware change needed to reconfigure media type.
What OAM protocols does the VSC7437XMT accelerate in hardware?
The VSC7437XMT accelerates Y.1731 (Ethernet OAM), IEEE 802.1ag (CFM), G.8113.1 (MPLS-TP OAM), and Bidirectional Forwarding Detection (BFD) entirely in hardware - with zero CPU involvement. This includes CCM generation/processing, LBM/LBR, frame loss/delay measurement (1DM/DMM), synthetic loss, link trace, and SAT - all operating at line rate across all ports. This hardware offload is a defining feature of the VSC7437XMT.
Is the VSC7437XMT pin-compatible with other devices in the VSC74xx family?
No, the VSC7437XMT is not pin-compatible with other VSC74xx family members such as VSC7429 or VSC7448. It uses a unique 324-ball FC-BGA package with dedicated timing, SerDes, and management signal assignments optimized for its integrated DPLL and 8-port Carrier Ethernet feature set. Migration requires PCB redesign - the VSC7437XMT is a purpose-built solution, not a drop-in upgrade.
VSC7437XMT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 324-BGA
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- -
- Interface:
- -
- Number of Circuits:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 324-BGA (19x19)
VSC7437XMT FAQ
1.How can I place an order for VSC7437XMT through Aetrix?
Please submit a Request for Quotation (RFQ) for VSC7437XMT 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 VSC7437XMT reliable?
The price and inventory of VSC7437XMT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSC7437XMT is usually 5 days.
3.What payment methods are accepted for VSC7437XMT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSC7437XMT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSC7437XMT?
VSC7437XMT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSC7437XMT 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 VSC7437XMT?
For technical support, including VSC7437XMT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSC7437XMT requirements.
6.How does Aetrix verify that VSC7437XMT is sourced from the original manufacturer or authorized distributors?
All VSC7437XMT 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 VSC7437XMT meets industry standards.
7.What is the process for return or replacement of VSC7437XMT?
All VSC7437XMT units undergo pre-shipment inspection (PSI). If there is an issue with VSC7437XMT, 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 VSC7437XMT part is unused and in its original packaging.
Return procedure for VSC7437XMT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VSC7437XMT Tags
-
LMC567CMX/NOPB
Texas Instruments
-
LM567CMX/NOPB
Texas Instruments
-
LM567CM/NOPB
Texas Instruments
-
VSC8531XMW-02
Microchip Technology
-
VSC8531XMW-05
Microchip Technology
-
GPY115C0VI
MaxLinear, Inc.
-
SI32185-A-FMR
Skyworks Solutions Inc.
-
VSC8541XMV-05
Microchip Technology
-
SI32178-B-FM1R
Skyworks Solutions Inc.
-
GPY215C0VI
MaxLinear, Inc.
-
CPC7514ZTR
Littelfuse Inc.
-
VSC8502XML-03
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
