My Inquiry
My Account
Microchip Technology VSC8552XKS-05
- Part No.:
- VSC8552XKS-05
- Manufacturer:
- Microchip Technology
- Category:
- Telecom
- Package:
- 256-BGA
- Datasheet:
-
VSC8552XKS-05.pdf
- Description:
- IC TELECOM INTERFACE 256BGA
- Quantity:
- Payment:
- Shipping:
Inventory:118
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VSC8552XKS-05 from Microsemi (now Microchip) is a dual-port 10/100/1000BASE-T Ethernet PHY IC supporting Synchronous Ethernet, QSGMII/SGMII/RGMII MAC interfaces, and IEEE 802.3af PoE. It delivers full-duplex gigabit operation over Cat5 UTP, features ActiPHY power management, and integrates VeriPHY cable diagnostics and ring resiliency for carrier-grade timing-aware networks.
For engineers reviewing the VSC8552XKS-05 datasheet, VSC8552XKS-05 pinout, VSC8552XKS-05 application, or VSC8552XKS-05 equivalent, this device is selected for carrier Ethernet edge switches, industrial time-sensitive networking (TSN) gateways, and PoE-powered media converters requiring precise frequency synchronization, low-latency SerDes bridging, and robust link failure detection.
Technical Context
The VSC8552XKS-05 implements two independent 10/100/1000BASE-T PHYs with integrated 1000BASE-X and 100BASE-FX SerDes media interfaces. It supports synchronous Ethernet (SyncE) via recovered clock outputs with configurable squelch and selection logic, enabling traceable frequency distribution across telecom infrastructure.
Its MAC interface flexibility includes QSGMII (4-lane 1.25 Gbps aggregate), SGMII (1.25 Gbps per port), and RGMII (2.5 Gbps aggregate with timing compensation), all configurable per port. The device uses IEEE 802.3 Clause 37 autonegotiation and supports EEE (802.3az) with wake-error counters and advertisement registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 10/100/1000 Mbps per port - supports mixed-speed operation on each PHY independently. |
| MAC Interface | QSGMII/SGMII/RGMII - enables high-density switch fabric interconnect with reduced pin count vs parallel GMII. |
| Media Interface | Cat5 UTP + 1000BASE-X/100BASE-FX fiber - allows copper-to-fiber media conversion without external SerDes. |
| Power Management | ActiPHY low-power states - reduces idle power to <150 mW/port while maintaining link presence and fast wake-up. |
| Synchronization | Synchronous Ethernet compliant - provides phase-aligned recovered clocks (REFCLK_OUT1/2) meeting ITU-T G.8262 EEC-2 stability. |
| PoE Support | IEEE 802.3af Class 0–4 - enables inline power delivery to connected PDs with classification and fault monitoring. |
| Diagnostic Capability | VeriPHY cable diagnostics - identifies open/short faults and estimates cable length up to 150 m with ±5 m accuracy. |
Pinout & Package
The VSC8552XKS-05 is housed in a 256-pin, 17 mm × 17 mm, 0.8 mm pitch LFBGA package with exposed thermal pad. Pin assignment follows Microsemi's standard VSC85xx pinout layout optimized for signal integrity and thermal dissipation in high-density switch PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFCLK_IN | Differential reference clock input | Accepts 125 MHz LVDS/LVPECL clock for timing recovery; required for SyncE operation and SGMII/QSGMII alignment. |
| REFCLK_OUT1/2 | Recovered media clock outputs | Provides phase-locked 125 MHz or 25 MHz clocks derived from line-recovered timing; used for system clock distribution. |
| RGMII_RXD[3:0]/TXD[3:0] | RGMII data lanes | 2.5 Gbps aggregate I/O with programmable delay tuning; supports both compensated and uncompensated board layouts. |
| QSGMII_LANE[3:0] | QSGMII serial lanes | Four 1.25 Gbps differential lanes carrying multiplexed traffic for two ports; reduces MAC-to-PHY routing by 75% vs GMII. |
| MDIO/MDC | Serial management interface | IEEE 802.3-compliant SMI bus for register read/write; supports interrupt-driven status polling and configuration updates. |
| LED[7:0] | Programmable LED control outputs | Eight open-drain outputs driving discrete LEDs or serial LED drivers; supports basic/enhanced modes with port-swapping. |
| GPIOS[3:0] | General-purpose I/O | Configurable as inputs/outputs with internal pull-up/down; used for reset coordination, link status signaling, or firmware handshaking. |
Key Features
| Feature | Design Value |
|---|---|
| Ring Resiliency | Hardware-accelerated protection switching with sub-50 ms failover for metro Ethernet ring topologies. |
| Fast Link Failure Indication | Detects physical layer disconnect within ≤2 ms and asserts interrupt to host controller for rapid software response. |
| Integrated Two-Wire Serial MUX | On-chip I²C-compatible multiplexer enabling shared access to external EEPROMs, temperature sensors, or PMICs without GPIO overhead. |
| JTAG Boundary Scan | IEEE 1149.1-compliant test access port supporting full-chain visibility, interconnect testing, and in-system programming. |
| VeriPHY Cable Diagnostics | Real-time TDR-based analysis of twisted-pair channel integrity without requiring link partner cooperation or packet injection. |
Applications
| Carrier Ethernet Access Node | Industrial TSN Gateway |
|---|---|
Use Scenario: Aggregating multiple DSL/fiber backhaul links into a single SyncE-compliant aggregation switch at cell tower sites. IC Role / Device Role / Timing Role: Dual-port PHY providing synchronized 1000BASE-T uplinks with recovered clock output feeding system PLL for PTP grandmaster timing alignment. Use Value: Eliminates external clock cleaners and reduces BOM cost while meeting ITU-T G.8262 EEC-2 wander requirements (<4.6 ppm). | Use Scenario: Bridging deterministic Ethernet (TSN) networks between factory-floor PLCs and cloud-connected HMIs using ruggedized PoE-powered enclosures. IC Role / Device Role / Timing Role: Gigabit PHY with IEEE 802.3af PoE sourcing and RGMII interface to FPGA-based TSN scheduler. Use Value: Enables single-cable deployment (data + power) and supports time-aware shaping via precise timestamping enabled by SyncE clock domain. |
| Managed PoE Media Converter | Time-Sensitive Video Transport |
Use Scenario: Converting legacy 100BASE-FX fiber links to modern 1000BASE-T copper infrastructure in broadcast facilities with centralized power management. IC Role / Device Role / Timing Role: Dual PHY acting as media converter core with QSGMII-to-1000BASE-X SerDes mode and integrated PoE classification. Use Value: Reduces latency variance to <1.5 µs (jitter <200 ps) and supports remote power budgeting via SMI-managed PoE negotiation. | Use Scenario: Distributing uncompressed HD video streams over Ethernet in live production trucks where jitter and packet loss must be minimized. IC Role / Device Role / Timing Role: Low-jitter PHY with EEE disabled and VeriPHY diagnostics ensuring cable health before transmission starts. Use Value: Guarantees bit-error rate <1e−12 under EMI stress and enables proactive maintenance via real-time cable impedance mapping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port gigabit PHY applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Marvell Alaska 88E1512 | Single-core 10/100/1000BASE-T PHY with RGMII/SGMII; no QSGMII or SyncE support; lower power but lacks ring resiliency. | Targeted at cost-sensitive enterprise switches without carrier-grade timing or redundancy requirements. | Select when SyncE, QSGMII density, or hardware ring protection are not required. |
| Microchip LAN8814 | Dual-port PHY with IEEE 1588v2 timestamping engine and integrated TSN shaper; supports only RGMII/SGMII; no QSGMII or 100BASE-FX SerDes. | Optimized for industrial TSN endpoints needing precise packet scheduling and hardware timestamping, not media conversion. | Prefer when IEEE 1588 boundary clock or time-aware traffic shaping is mandatory. |
Compared with the VSC8552XKS-05, the 88E1512 offers lower power and simpler integration but cannot replace its SyncE clock distribution or QSGMII bandwidth efficiency, while the LAN8814 adds TSN features at the expense of missing fiber SerDes and ring resiliency-making the VSC8552XKS-05 uniquely suited for carrier-class media-aggregation nodes.
Availability
VSC8552XKS-05 is available at Aetrix Electronics and suitable for carrier Ethernet access nodes, industrial TSN gateways, and managed PoE media converters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for VSC8552XKS-05 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 industrial markets, with deep expertise in timing, Ethernet, and radiation-hardened systems.
The VSC8552XKS-05 belongs to Microsemi's VSC85xx family of carrier Ethernet PHYs, engineered specifically for metro and access network equipment demanding Synchronous Ethernet compliance, hardware-based resiliency, and multi-standard MAC interface flexibility.
FAQ
What is the primary function of the VSC8552XKS-05 in an Ethernet system?
The VSC8552XKS-05 serves as a dual-port 10/100/1000BASE-T physical layer transceiver that bridges MAC-layer interfaces (QSGMII/SGMII/RGMII) to copper or fiber media. It performs signal encoding/decoding, autonegotiation, clock recovery, and link management-enabling interoperability between switch fabrics and physical networks while supporting Synchronous Ethernet timing distribution.
Does the VSC8552XKS-05 support IEEE 1588 Precision Time Protocol (PTP)?
No, the VSC8552XKS-05 does not include hardware timestamping or PTP processing engines. It supports Synchronous Ethernet (SyncE) for frequency-level timing alignment via recovered clock outputs (REFCLK_OUT1/2), but lacks the nanosecond-resolution timestamping required for PTP. For PTP applications, pairing the VSC8552XKS-05 with an external PTP-aware MAC or switch controller is necessary.
Can the VSC8552XKS-05 operate in QSGMII mode with only one active port?
Yes, the VSC8552XKS-05 supports independent configuration per port. In QSGMII mode, all four lanes carry aggregated traffic for both ports, but port disablement is handled via register settings (e.g., disabling MDIO address or powering down unused SerDes). Unused lanes remain electrically terminated and do not impact signal integrity of the active path.
What is the maximum operating temperature range for the VSC8552XKS-05?
The VSC8552XKS-05 is rated for industrial temperature operation from –40 °C to +85 °C ambient, verified per Microsemi's qualification testing. Its thermal diode (integrated on-die sensor) enables real-time junction temperature monitoring via ADC readback through register 4.6.8, supporting dynamic thermal throttling in enclosed deployments.
How does the VeriPHY diagnostic feature work on the VSC8552XKS-05?
VeriPHY on the VSC8552XKS-05 performs time-domain reflectometry (TDR) by injecting calibrated pulse signals onto the copper pair and analyzing reflected waveforms. It reports open/short locations, estimates cable length (±5 m accuracy up to 150 m), and detects impedance mismatches-all without requiring link partner participation or disrupting live traffic.
VSC8552XKS-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 256-BGA
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Ethernet
- Interface:
- -
- Number of Circuits:
- 1
- Voltage - Supply:
- 1V
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-PBGA (17x17)
VSC8552XKS-05 FAQ
1.How can I place an order for VSC8552XKS-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for VSC8552XKS-05 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 VSC8552XKS-05 reliable?
The price and inventory of VSC8552XKS-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSC8552XKS-05 is usually 5 days.
3.What payment methods are accepted for VSC8552XKS-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSC8552XKS-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSC8552XKS-05?
VSC8552XKS-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSC8552XKS-05 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 VSC8552XKS-05?
For technical support, including VSC8552XKS-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSC8552XKS-05 requirements.
6.How does Aetrix verify that VSC8552XKS-05 is sourced from the original manufacturer or authorized distributors?
All VSC8552XKS-05 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 VSC8552XKS-05 meets industry standards.
7.What is the process for return or replacement of VSC8552XKS-05?
All VSC8552XKS-05 units undergo pre-shipment inspection (PSI). If there is an issue with VSC8552XKS-05, 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 VSC8552XKS-05 part is unused and in its original packaging.
Return procedure for VSC8552XKS-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VSC8552XKS-05 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…
