KSZ9893RNXI

Phân tích hậu tố

• RNX: 2 integrated copper PHYs + configurable RGMII/RMII/MII host MAC port variant
• I: Industrial wide temperature grade (-40°C ~ +85°C)
• Tape-and-reel production variant: KSZ9893RNXI-TR

1. Core 3-Port Gigabit Architecture

• Port 1 & Port 2: Integrated IEEE 802.3 10/100/1000BASE-T copper PHY transceivers
• Port 3: Standalone Gigabit MAC with multi-mode configurable host interface: RGMII v2.0 / RMII v1.2 / MII
• Non-blocking wire-speed store-and-forward switch fabric
• 4096-entry MAC address lookup table + 128 KB shared packet buffer
• Supports jumbo frames up to 9000 bytes for large industrial data transmission

2. Full Layer 2 Managed Switch Functions

VLAN & Traffic Filtering

• IEEE 802.1Q tagged VLAN, port-based VLAN, Q-in-Q double tagging
• Rich ACL access control list for source/destination MAC, IP, port filtering
• 802.1X port-based network authentication

QoS & Scheduling

• 8 priority queues per port, 4-level CoS/DSCP traffic classification
• Strict priority, weighted round-robin (WRR) scheduling for real-time industrial control traffic
• Port ingress/egress bandwidth rate limiting

Redundancy & Diagnostics

• RSTP / MSTP spanning tree protocols for ring/linear industrial network redundancy
• Port mirroring (ingress/egress sniffing) for network fault debugging
• LinkMD cable diagnostic: Detect open/short faults and measure twisted-pair cable length
• Complete MIB traffic statistics counters (34 counters per port)
• Tail-tag mode on host MAC port to identify ingress port and packet priority for MCU

3. Power-Saving & Wake Features

• EtherGreen™ low-power suite + IEEE 802.3az EEE Energy Efficient Ethernet
• Wake-on-LAN (WoL) remote wake triggered by Magic Packet or link state change
• Per-port dynamic power down when no link detected to cut power consumption

4. Multi-Mode Management Interfaces

• Hardware register access via SPI (up to 50 MHz), I²C, MIIM MDIO
• Proprietary In-Band Management (IBA): Configure all registers via standard Ethernet frames without extra control bus
• Power-up strap pins support unmanaged standalone operation without EEPROM or host MCU

5. PHY Transceiver Robustness

• Auto MDI/MDIX automatic cable polarity correction
• High industrial EMC performance for long field twisted-pair wiring
• Integrated surge and ESD protection on all copper line pins

6. Electrical Specifications

• Multi-rail power supply: 3.3 V analog/digital I/O, internal 1.2 V core regulator
• Digital IO tolerant to 1.8 V / 2.5 V / 3.3 V host logic levels
• Typical total operating current: 250 mA

7. Environmental & Package Ratings

• Operating temperature range (Industrial Grade I): -40°C to +85°C
• Mức độ nhạy cảm với độ ẩm MSL 3 (thời gian bảo quản trên sàn 168 giờ trước khi hàn nóng chảy)
• Fully RoHS lead-free, halogen-free and REACH compliant
• Package: 64-pin VQFN exposed thermal pad, compact 8 mm × 8 mm footprint

Ứng dụng điển hình

• Industrial PLC dual-Ethernet communication modules, servo drive gigabit network interfaces
• Embedded industrial gateway, edge computing multi-port Gigabit switch boards
• CNC machine, robotic equipment real-time control network concentrators
• Automotive infotainment, telematics and vehicle gigabit Ethernet backbone
• Digital signage, IP camera and industrial vision equipment dual-LAN expansion
• Medical imaging equipment high-speed data transmission switch modules
• Smart factory distributed IO, fire alarm and building automation network nodes