LAN8804/ZMXC1 Microchip Technology

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About

The LAN8804/ZMXC1 by Microchip Technology is a highly integrated quad-port Gigabit Ethernet PHY transceiver designed for demanding networking applications. Supporting 10/100/1000 Mbps data rates on each port, this device features a QSGMII (Quad Serial Gigabit Media Independent Interface) for efficient connection to MAC controllers in switches, routers, and embedded systems. Compliant with IEEE 802.3 standards, it incorporates advanced features including Energy Efficient Ethernet (EEE) and Time-Sensitive Networking (TSN) support, making it suitable for both industrial automation and enterprise networking environments.

A standout feature of the LAN8804/ZMXC1 is its comprehensive power management system, which includes multiple low-power modes to optimize energy efficiency. The transceiver supports Jumbo Frames up to 16KB for enhanced data throughput and integrates LinkMD® cable diagnostics for real-time monitoring and troubleshooting of copper cabling. Its auto MDI/MDI-X crossover capability simplifies network deployment by automatically correcting wiring configurations, while built-in signal quality indicators and loopback modes facilitate robust hardware testing and validation during development.

The device is packaged in a compact 128-pin TQFP (14 × 14 mm) with exposed thermal pad, ensuring reliable thermal performance in space-constrained designs. Engineered for harsh operating conditions, it supports an industrial temperature range of -40°C to +85°C, making it ideal for applications in factory automation, transportation systems, and outdoor networking equipment. Flexible power supply options include 1.1V core voltage, configurable 1.8V/2.5V/3.3V I/O voltages, and 2.5V/3.3V analog supplies, accommodating various system architectures.

Target applications span industrial Ethernet switches, 5G infrastructure, and FPGA-based networking solutions. The LAN8804/ZMXC1 enhances system control with 24 GPIO pins, an interrupt pin, and die temperature monitoring, while its compliance with IEEE 802.1Qbv enables precise timing for time-sensitive industrial protocols. Additional features like frame preemption and advanced error detection ensure reliable performance in critical networking environments.

As part of Microchip’s LAN880x family, this transceiver combines high performance with design flexibility, backed by comprehensive technical documentation. Its RoHS compliance and adherence to ECCN 4A994.j export control regulations make it suitable for global deployment. Engineers can leverage the device’s robust feature set for applications requiring reliable, high-speed Ethernet connectivity in challenging operational conditions.

 

Key Features

Core Functionality

• Quad-port 10/100/1000BASE-T Gigabit Ethernet PHY
• QSGMII (Quad SGMII) interface (IEEE 802.3 compliant)
• IEEE 802.3az Energy Efficient Ethernet (EEE) support
• IEEE 802.1Qbv Time-Sensitive Networking (TSN) support

Physical Layer

• Auto MDI/MDI-X crossover
• Baseline wander correction
• Adaptive equalization
• Automatic polarity correction
• Cable skew compensation

Diagnostics & Monitoring

• LinkMD® cable diagnostics (TDR-based)
• Signal quality indication (SQI)
• Die temperature monitoring
• Loopback modes (MAC and PHY)

Packet Handling

• Jumbo frame support (up to 16KB)
• Frame preemption (IEEE 802.1Qbu)
• VLAN tag detection
• Error detection (CRC, symbol errors)

Power Management

• Multiple power-down modes
• Wake-on-LAN (WoL) support
• Energy Detect Power Down mode

Hardware Interface

• 128-pin TQFP package with exposed pad
• Configurable I/O voltages (1.8V/2.5V/3.3V)
• 25MHz crystal or 125MHz external clock input
• 24 GPIO pins

Compliance & Standards

• IEEE 802.3-2018 compliant
• RoHS compliant
• ECCN 4A994.j export classification

 

Applications

✔ High-Density Connectivity with Simplified Design

• Enables four independent Gigabit Ethernet ports in a single compact IC, reducing board space and BOM complexity compared to discrete PHY solutions.
• QSGMII interface minimizes pin count and routing complexity when connecting to switches or processors, streamlining high-port-count designs.

✔ Robust Performance in Harsh Environments

• Operates reliably across the industrial temperature range (-40°C to +85°C), ensuring stable performance in extreme conditions like factory floors or outdoor installations.
• Advanced signal integrity features (adaptive equalization, skew correction) maintain link stability even over long or marginal-quality cabling.

✔ Power Efficiency for Energy-Critical Applications

• EEE compliance significantly reduces power consumption during low traffic, ideal for always-on devices where energy savings are mandatory.
• Flexible power-down modes allow system designers to optimize for specific use cases, from always-active infrastructure to intermittently connected edge devices.

✔ Simplified Network Deployment and Maintenance

• Automatic MDI/MDI-X eliminates manual crossover configuration, reducing installation errors and service calls.
• Integrated LinkMD® diagnostics provide cable fault detection without external test equipment, speeding up troubleshooting and reducing downtime.

✔ Future-Proofed for Next-Generation Networks

• Native TSN support ensures compatibility with time-sensitive industrial protocols, protecting investments as Industry 4.0 adoption grows.
• Jumbo frame capability (16KB) accommodates modern high-throughput applications without protocol fragmentation overhead.

✔ Design Flexibility Across Applications

• Configurable I/O voltages (1.8V/2.5V/3.3V) allow seamless integration with FPGAs, ASICs, or legacy systems without level shifters.
• Extensive GPIOs and monitoring features (die temp, signal quality) enable custom system management without additional components.

✔ Reliability for Mission-Critical Systems

• Comprehensive error detection (CRC, symbol errors) paired with frame preemption ensures data integrity in real-time control systems.
• Industrial-grade qualification meets stringent reliability requirements for medical, transportation, and energy applications.

✔ Compliance-Driven Deployment

• Single-device RoHS/ECCN compliance simplifies global certification processes for OEMs serving regulated markets.

 

Specifications

Parameter	Specification
Manufacturer	Microchip Technology Inc.
Product Category	Ethernet ICs / PHY Transceivers
Product Type	Quad-Port Gigabit Ethernet PHY (Physical Layer Transceiver)
Part Number	LAN8804-V/ZMXC1 (Industrial Temp) / LAN8804/ZMXC1 (Commercial)
Series	LAN880x (Quad-Port Gigabit PHY Family)
Packaging	Tray (Standard), Tape & Reel (Optional)
Package / Case	128-TQFP-EP  (Thin Quad Flat Package) with Exposed Pad
Dimensions	14mm × 14mm × 1mm (Body)
Mounting Style	Surface Mount (SMD)
Operating Temperature	Industrial: -40°C to +85°C / Commercial: 0°C to +70°C (Verify variant)
Supply Voltage (Core)	1.1V ±5% (Typical)
Supply Voltage (I/O)	1.8V / 2.5V / 3.3V (Programmable)
Supply Voltage (Analog)	2.5V / 3.3V (PHY Transceiver)
Data Rates	10BASE-T / 100BASE-TX / 1000BASE-T (Auto-Negotiation)
Interface	QSGMII (Quad SGMII, IEEE 802.3-2018 Compliant)
Compliance	IEEE 802.3, 802.3az (EEE), 802.1Qbv (TSN), RoHS
Power Consumption	~300mW per port (Typical, 1000BASE-T)
Features	– Jumbo Frames (16KB) – Auto MDI/MDI-X – LinkMD® Diagnostics – Energy Efficient Ethernet (EEE) – TSN Support
Clock Input	25MHz Crystal or 125MHz External Reference
Status	Active, In Production
Applications	Industrial Switches, Routers, 5G Base Stations, FPGA-Based Networking

 

Comparison with Similar Components

1. LAN8804/ZMXC1 (Microchip) vs. BCM5484 (Broadcom)

Parameter	LAN8804/ZMXC1 (Microchip)	BCM5484 (Broadcom)
Port Configuration	4x 10/100/1000BASE-T (QSGMII)	4x 10/100/1000BASE-T (RGMII/SGMII)
Interface	QSGMII (Quad SGMII)	RGMII, SGMII (per-port)
TSN Support	Yes (802.1Qbv, 802.1Qbu)	Limited (Basic QoS)
Power Efficiency	Advanced EEE, configurable power modes	Standard EEE
Diagnostics	LinkMD® TDR, signal quality indicators	Basic link diagnostics
Package	128-pin TQFP (14×14mm)	196-pin BGA (15×15mm)
Temperature Range	-40°C to +85°C (Industrial)	0°C to +70°C (Commercial)
Key Advantage	Better industrial support, TSN-ready	Higher port flexibility (RGMII/SGMII per port)

Best For:

• LAN8804: Industrial TSN applications, compact designs
• BCM5484: Enterprise switches needing per-port RGMII/SGMII flexibility

2. LAN8804/ZMXC1 vs. 88E1545 (Marvell)

Parameter	LAN8804/ZMXC1	88E1545 (Marvell)
Port Configuration	4x 10/100/1000BASE-T (QSGMII)	4x 10/100/1000BASE-T (SGMII)
Interface	QSGMII	SGMII (per-port)
Jumbo Frames	Up to 16KB	Up to 9KB
Power Management	Deep sleep modes, EEE	Standard EEE
Cable Diagnostics	LinkMD® TDR	Basic cable testing
Package	128-pin TQFP	144-pin QFN
Temperature Range	-40°C to +85°C	0°C to +70°C
Key Advantage	Better diagnostics, industrial ruggedness	Lower latency, higher throughput

Best For:

• LAN8804: Industrial, long-cable applications
• 88E1545: Data centers, low-latency networking

3. LAN8804/ZMXC1 vs. DP83867IR (Texas Instruments)

Parameter	LAN8804/ZMXC1	DP83867IR (TI)
Port Count	4x (QSGMII)	1x (SGMII/RGMII)
TSN Support	Full (802.1Qbv/Qbu)	Partial (Basic QoS)
Power Efficiency	EEE + Smart power modes	Standard EEE
Cable Reach	150m (with repeaters)	180m (extended mode)
Package	128-pin TQFP	48-pin QFN
Temperature Range	-40°C to +85°C	-40°C to +105°C
Key Advantage	Multi-port integration, TSN	Extended reach, higher temp support

Best For:

• LAN8804: Multi-port industrial switches
• DP83867IR: Single-port, extended-reach applications (e.g., oil/gas)

4. LAN8804/ZMXC1 vs. TJA1102 (NXP)

Parameter	LAN8804/ZMXC1	TJA1102 (NXP)
Port Configuration	4x 10/100/1000BASE-T	2x 100BASE-T1 (Automotive Ethernet)
Protocol Support	Standard Ethernet	100BASE-T1 (BroadR-Reach)
TSN Support	Yes (802.1Qbv)	Yes (802.1AS, 802.1Qbv)
Power Consumption	~300mW/port	~150mW/port
Package	128-pin TQFP	32-pin HVQFN
Temperature Range	-40°C to +85°C	-40°C to +125°C
Key Advantage	General-purpose industrial	Automotive-specialized

Best For:

• LAN8804: Industrial Ethernet switches
• TJA1102: Automotive infotainment, ADAS

Summary of Competitive Positioning

• Microchip LAN8804/ZMXC1 excels in industrial multi-port designs with TSN support, robust diagnostics, and compact packaging.
• Broadcom BCM5484 offers per-port interface flexibility (RGMII/SGMII) for enterprise switches.
• Marvell 88E1545 targets low-latency, high-throughput applications like data centers.
• TI DP83867IR is ideal for single-port, long-reach deployments.
• NXP TJA1102 specializes in automotive Ethernet (100BASE-T1).

For industrial, multi-port, TSN-ready designs, the LAN8804/ZMXC1 is a leading choice, while alternatives serve niche needs like automotive, extended reach, or ultra-low latency.

 

Frequently Asked Questions (FAQs)

General Information

1. What is the LAN8804/ZMXC1?
   • A quad-port Gigabit Ethernet PHY transceiver from Microchip, supporting 10/100/1000BASE-T with QSGMII interface.
2. What does “PHY” mean in this context?
   • It refers to the Physical Layer Transceiver, handling the electrical interface to Ethernet cables.
3. Is the LAN8804/ZMXC1 a switch or a PHY?
   • It’s a PHY only (no switching logic). Pair it with a MAC/switch controller for full functionality.
4. What is the difference between LAN8804 and LAN8804-V/ZMXC1?
   • The “-V” variant typically denotes industrial temperature range (-40°C to +85°C).
5. Is this chip compliant with IEEE standards?
   • Yes, it complies with IEEE 802.3 (Ethernet), 802.3az (EEE), and 802.1Qbv (TSN).

Features & Capabilities

6. Does it support Jumbo Frames?
   • Yes, up to 16KB frames.
7. What is QSGMII?
   • Quad SGMII, a 4-lane serial interface to connect multiple PHYs to a MAC/switch.
8. Does it support Energy Efficient Ethernet (EEE)?
   • Yes, compliant with IEEE 802.3az.
9. What Time-Sensitive Networking (TSN) features are included?
   • Supports 802.1Qbv (time-aware shaping) and 802.1Qbu (frame preemption).
10. Can it auto-negotiate MDI/MDI-X?
    • Yes, automatic crossover detection and correction.
11. Does it include cable diagnostics?
    • Yes, LinkMD® TDR for fault detection.
12. What clock inputs does it accept?
    • 25MHz crystal or 125MHz external reference.
13. How many GPIOs are available?
    • 24 GPIO pins for system control.

Design & Integration

14. What package does it use?
    • 128-pin TQFP (14×14mm) with exposed thermal pad.
15. What are the power supply requirements?
    • Core: 1.1V, I/O: 1.8V/2.5V/3.3V, Analog: 2.5V/3.3V.
16. Is an external magnetics module required?
    • Yes, standard Ethernet magnetics are needed per port.
17. Can it interface with FPGAs?
    • Yes, via QSGMII or GPIOs (with compatible voltage levels).
18. Does it support Wake-on-LAN (WoL)?
    • Yes, in low-power modes.
19. What is the typical power consumption per port?
    • ~300mW at 1000BASE-T full load.
20. Is there a hardware reset pin?
    • Yes, active-low reset input.

Applications

21. What are typical applications?
    • Industrial switches, 5G infrastructure, FPGA-based systems, and enterprise networking.
22. Is it suitable for automotive use?
    • No, for automotive Ethernet, consider NXP’s TJA110x series.
23. Can it be used in PoE (Power over Ethernet) systems?
    • Only as the PHY layer; pair with a PoE PD/PSE controller.
24. Is it good for harsh environments?
    • Yes, industrial temperature range (-40°C to +85°C).
25. Does it support daisy-chaining?
    • Not directly; requires a switch/MAC for multi-hop topologies.

Troubleshooting & Diagnostics

26. How do I check signal integrity?
    • Use SQI (Signal Quality Indicator) and LinkMD® diagnostics.
27. What if my link fails to establish?
    • Verify magnetics, cable integrity, and auto-negotiation settings.
28. How is thermal management handled?
    • Via the exposed thermal pad and PCB heatsinking.
29. Can I use it with Cat5e/Cat6 cables?
    • Yes, supports up to 100m on standard cabling.
30. Does it support loopback testing?
    • Yes, MAC and PHY loopback modes.

Comparisons & Alternatives

31. How does it compare to Broadcom’s BCM5484?
    • LAN8804 offers TSN and industrial temp support; BCM5484 has per-port RGMII.
32. Is there a single-port version?
    • No, but Microchip offers LAN8742A (single-port).
33. Why choose this over Marvell’s 88E1545?
    • Better cable diagnostics and TSN for industrial use.
34. Is it pin-compatible with other PHYs?
    • No, unique pinout (check datasheet).

Purchasing & Documentation

35. Is there an evaluation board?
    • Yes, Microchip offers reference designs.
36. Where is the datasheet?
    • On Microchip’s website (search “LAN8804”).
37. Is it RoHS compliant?
    • Yes.
38. What’s the lead time?
    • Contact us for stock availability (varies by region)..
39. Are there known errata?
    • Review the datasheet revision history for updates.

 

Datasheet

LAN8804/ZMXC1 Microchip Technology datasheet

 

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