Microchip Technology VSC8582XKS-14

Overview

VSC8582XKS-14 from Microsemi (now Microchip) is a dual-port 10/100/1000BASE-T Ethernet PHY IC with integrated IEEE 1588v2 precision timing, MACsec encryption, Synchronous Ethernet, VeriTime™ timestamping, and QSGMII/SGMII MAC interface. It supports Cat5 copper and 1000BASE-X/100BASE-FX fiber media, operates at 1.2V core voltage, and delivers <1.3W typical power consumption per port in active mode. It is deployed in carrier-grade Ethernet switches, time-sensitive industrial controllers, and telecom infrastructure requiring sub-100ns timestamp accuracy.

For engineers reviewing the VSC8582XKS-14 datasheet, VSC8582XKS-14 pinout, VSC8582XKS-14 application, or VSC8582XKS-14 equivalent, key selection criteria include IEEE 1588v2 one-step transparent clock support, hardware-accelerated MACsec AES-128, dual-port daisy-chainable SPI timestamping, and compliance with ITU-T G.8262 SyncE EEC Option 2.

Technical Context

The VSC8582XKS-14 implements a fully integrated PHY layer with independent SerDes for copper (1000BASE-T) and optical/fiber (1000BASE-X/100BASE-FX) media paths, plus configurable QSGMII/SGMII MAC-side interfaces. Its IEEE 1588v2 block includes hardware timestamp insertion/removal, PPS output, local time counter (LTC), and serial time-of-day interface - all synchronized to recovered media clocks or external reference inputs.

MACsec operates inline at line rate with zero latency impact, supporting 128-bit AES-GCM encryption/decryption and secure channel establishment via MKA. The device uses ActiPHY™ dynamic power management, enabling low-power link-down states while retaining full IEEE 1588 synchronization context across sleep/wake cycles.

Key Specifications

Pinout & Package

The VSC8582XKS-14 is housed in a 256-pin 17 mm × 17 mm × 1.4 mm RoHS-compliant PBGA package with 0.8 mm pitch and thermal pad. Pin assignment follows the VSC8582-11 datasheet Revision 4.2, Table 2-1 (Pin Descriptions), and supports daisy-chained SPI for multi-device timestamp coordination.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port Gigabit Ethernet PHY applications.

Compared with the Marvell 88E1512 and Intel I210-IT, the VSC8582XKS-14 uniquely combines dual-port 1588v2 boundary clock functionality, hardware MACsec, and daisy-chainable SPI timestamping - making it the only solution capable of meeting ITU-T G.8275.1 profile A requirements in a single chip.

Availability

VSC8582XKS-14 is available at Aetrix Electronics and suitable for 5G fronthaul gateways, carrier Ethernet switches, and industrial TSN bridges requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.

Supply support for VSC8582XKS-14 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., is a leader in high-reliability semiconductor solutions for aerospace, defense, communications, and industrial markets.

The VSC8582XKS-14 belongs to Microsemi's VeriTime™ Ethernet PHY product line, engineered specifically for carrier-grade timing-critical infrastructure requiring IEEE 1588v2, SyncE, and MACsec in a single device.

FAQ

What is the primary function of the VSC8582XKS-14 in a network system?

The VSC8582XKS-14 serves as a dual-port Gigabit Ethernet physical layer transceiver with integrated IEEE 1588v2 precision timing, MACsec encryption, and Synchronous Ethernet capabilities. It bridges MAC-layer interfaces (QSGMII/SGMII) to copper (1000BASE-T) or fiber (1000BASE-X/100BASE-FX) media while delivering hardware-accelerated timestamping and line-rate security. In systems like 5G fronthaul gateways, the VSC8582XKS-14 acts as a boundary clock ensuring sub-100 ns time alignment across distributed radio units.

Does the VSC8582XKS-14 support IEEE 1588v2 one-step transparent clock operation?

Yes, the VSC8582XKS-14 fully supports IEEE 1588v2 one-step end-to-end transparent clock (E2E TC) operation as defined in Section 3.13.8 of the datasheet. It performs hardware timestamp modification on PTP event messages in real time, eliminating software-induced delays. The VSC8582XKS-14 also supports one-step boundary clock (BC), ordinary clock (OC), and peer-to-peer TC modes - all configurable via its extended register set. This capability makes the VSC8582XKS-14 suitable for ITU-T G.8275.1 profile A-compliant timing architectures.

How does MACsec implementation in the VSC8582XKS-14 differ from software-based encryption?

The VSC8582XKS-14 implements MACsec using a dedicated hardware AES-GCM engine that processes frames at full 1 Gbps line rate with zero added latency or packet loss. Unlike software-based MACsec, which consumes CPU cycles and introduces variable jitter, the VSC8582XKS-14 performs encryption/decryption inline within the PHY datapath. It supports secure channel establishment via MKA, replay protection, and 128-bit key management - all without host processor involvement. This ensures deterministic performance in time-critical applications such as financial trading networks or secure industrial control.

What reference clock configurations does the VSC8582XKS-14 support for SyncE compliance?

The VSC8582XKS-14 supports both single-ended and differential REFCLK inputs (25 MHz or 125 MHz) for SyncE operation, as specified in Section 3.8 of the datasheet. It meets ITU-T G.8262 EEC Option 2 requirements for phase noise and wander, generating jitter-cleaned clock outputs (REFCLK_OUT, TX_CLK, RX_CLK) locked to the recovered media clock or external reference. The device allows dynamic switching between reference sources and supports holdover mode during reference loss - essential for resilient telecom timing distribution. These features ensure the VSC8582XKS-14 maintains SyncE compliance across temperature and voltage variations.

Can the VSC8582XKS-14 operate in a daisy-chained SPI topology for multi-device timestamp coordination?

Yes, the VSC8582XKS-14 includes dedicated TS_SPI_CLK, TS_SPI_MOSI, TS_SPI_MISO, and TS_SPI_CS pins enabling true daisy-chained SPI for timestamp forwarding across up to eight devices. As described in Section 3.14, this architecture allows a single microcontroller to configure and collect hardware timestamps from multiple VSC8582XKS-14 instances without additional level-shifting or multiplexing. Each device forwards timestamp data through its MISO pin to the next in chain, preserving nanosecond-level correlation - a critical capability for multi-port boundary clocks in carrier Ethernet switches.