KSZ8863RLLI - 3-Port 10/100 Switch w/ RMII | Microchip
MPN: KSZ8863RLLI ✓ AktifKSZ8863RLLI Ringkasan
A managed Ethernet switch is a Layer 2 network device that uses a switch fabric to forward Ethernet frames between connected ports based on MAC address tables, while providing management features such as VLAN, QoS, port mirroring, and rate limiting. The KSZ8863RLLI sits in the hierarchy: Ethernet switch -> managed switch -> Layer 2 switch -> networking IC -> semiconductor. It is part of the IEEE 802.3 / 802.3u family of Fast Ethernet devices, supporting auto-negotiation per Clause 28 of the IEEE 802.3u specification.
Key features include integrated 10/100BASE-TX PHYs with HP auto-MDI/MDIX (no external magnetics on the PHY side), support for fiber mode on Port 3, an RMII interface to an external MAC or host, an I2C/SPI host management interface, advanced power management including energy-detect mode, and 1.4 KB packet buffer per port. The device operates from -40C to +85C industrial temperature range.
Architecture is built on a store-and-forward switch fabric with 1 Gbps total bandwidth, supporting wire-speed non-blocking forwarding on all three ports. The device includes IEEE 802.1Q VLAN, 802.1p QoS priority queues, port-based access control, and IGMP snooping for multicast filtering. The 48-pin LQFP package allows simple 4-layer PCB assembly using standard lead-free reflow.
Typical applications include industrial Ethernet sensor networks, IP surveillance cameras with daisy-chained switch ports, building automation backbones, factory automation PLCs, and embedded IoT gateways requiring multiple Ethernet ports. The integrated PHYs and small package reduce BOM cost and PCB area versus discrete MAC+PHY solutions.
When designing with this device, designers should follow the KSZ8863RLL Hardware Design Checklist from Microchip for crystal and magnetics selection. The 25 MHz reference clock drives the internal PHYs; PHY-to-MAC connection should use impedance-controlled traces per IEEE 802.3 100BASE-TX.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatif penggantian untuk KSZ8863RLLI — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian KSZ8863RLLI (sama faktor bentuk dan footprint) — berbeda di dalam Number of Ports, External MAC Interface, Fiber Support, Reference Clock.
KSZ8863MLLI
✅ Drop-InKontak untuk harga
Lihat Datasheet →KSZ8863FLLI
✅ Drop-InKontak untuk harga
Lihat Datasheet →KSZ8873FLLI
✅ Drop-InKontak untuk harga
Lihat Datasheet →KSZ8863RLLI Rating Maksimal & Karakteristik Listrik
| Product Type | 3-Port 10/100 Managed Ethernet Switch with PHYs |
| Laju Data | 10/100 Mbps per port |
| Number of Ports | 3 |
| PHY Interfaces | 3x integrated 10/100BASE-TX PHYs |
| Host CPU Interface | I2C / SPI (non-PCI) |
| External MAC Interface | 1x RMII |
| Fiber Support | Port 3 supports 100BASE-FX |
| Switch Bandwidth | 1 Gbps non-blocking |
| Auto-Negotiation | IEEE 802.3u Clause 28 |
| Auto-MDI/MDIX | Yes, HP auto-crossover on all ports |
| Suhu Kerja | -40C to +85C (industrial) |
| Paket | 48-LQFP (7x7 mm) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
| Reference Clock | 25 MHz external crystal |
Konfigurasi Pin KSZ8863RLLI
| Pin produk 1 | VDD_33 — 3.3V digital supply |
| Pin produk 2 | GND — Ground |
| Pin produk 3 | X1 — 25 MHz crystal input |
| Pin produk 4 | X2 — 25 MHz crystal output |
| Pin produk 5 | RST_N — Hardware reset (active low) |
| Pin produk 6 | SCL — I2C clock / SPI clock |
| Pin produk 7 | SDA — I2C data / SPI data |
| Pin produk 8 | SPISL — SPI/I2C mode select strap |
| Pin produk 9 | INT_N — Interrupt output (active low) |
| Pin produk 10 | LED1_1 — Port 1 LED indicator |
| Pin produk 11 | LED1_2 — Port 1 LED indicator |
| Pin produk 12 | LED2_1 — Port 2 LED indicator |
| Pin produk 13 | LED2_2 — Port 2 LED indicator |
| Pin produk 14 | LED3_1 — Port 3 LED indicator |
| Pin produk 15 | LED3_2 — Port 3 LED indicator |
| Pin produk 16 | RMII_REF_CLK — RMII reference clock input |
| Pin produk 17 | RMII_CRS_DV — RMII carrier sense / data valid |
| Pin produk 18 | RMII_RXD0 — RMII receive data 0 |
| Pin produk 19 | RMII_RXD1 — RMII receive data 1 |
| Pin produk 20 | RMII_TXEN — RMII transmit enable |
| Pin produk 21 | RMII_TXD0 — RMII transmit data 0 |
| Pin produk 22 | RMII_TXD1 — RMII transmit data 1 |
| Pin produk 23 | RMII_MDC — RMII management clock |
| Pin produk 24 | RMII_MDIO — RMII management data |
| Pin produk 25 | VDD_33A — 3.3V analog supply |
| Pin produk 26 | GNDA — Analog ground |
| Pin produk 27 | P1_RXP — Port 1 PHY receive positive |
| Pin produk 28 | P1_RXN — Port 1 PHY receive negative |
| Pin produk 29 | P1_TXP — Port 1 PHY transmit positive |
| Pin produk 30 | P1_TXN — Port 1 PHY transmit negative |
| Pin produk 31 | P2_RXP — Port 2 PHY receive positive |
| Pin produk 32 | P2_RXN — Port 2 PHY receive negative |
| Pin produk 33 | P2_TXP — Port 2 PHY transmit positive |
| Pin produk 34 | P2_TXN — Port 2 PHY transmit negative |
| Pin produk 35 | P3_RXP — Port 3 PHY receive positive (copper) |
| Pin produk 36 | P3_RXN — Port 3 PHY receive negative (copper) |
| Pin produk 37 | P3_TXP — Port 3 PHY transmit positive (copper) |
| Pin produk 38 | P3_TXN — Port 3 PHY transmit negative (copper) |
| Pin produk 39 | FX_SD — Port 3 fiber signal detect |
| Pin produk 40 | FX_RXP — Port 3 fiber receive positive |
| Pin produk 41 | FX_RXN — Port 3 fiber receive negative |
| Pin produk 42 | FX_TXP — Port 3 fiber transmit positive |
| Pin produk 43 | FX_TXN — Port 3 fiber transmit negative |
| Pin produk 44 | GPIO0 — General purpose IO / strap config |
| Pin produk 45 | GPIO1 — General purpose IO / strap config |
| Pin produk 46 | GPIO2 — General purpose IO / strap config |
| Pin produk 47 | VDD_33 — 3.3V digital supply |
| Pin produk 48 | GND — Ground |
Aplikasi Umum
KSZ8863RLLI cocok untuk 6 aplikasis: Industrial Ethernet Sensor Networks, IP Surveillance Camera Daisy-Chain, Building Automation Backbone, Factory Automation PLC, Embedded IoT Gateway, Multi-Port Network Printer / MFP.
Industrial Ethernet Sensor Networks
The KSZ8863RLLI's three integrated 10/100BASE-TX PHYs and 48-LQFP industrial temperature rating make it well-suited to multi-port industrial sensor backbones. With 1 Gbps non-blocking switch fabric and IEEE 802.1Q VLAN support, the device isolates sensor traffic while supporting QoS prioritization for time-critical control messages. The -40C to +85C operation and HP auto-MDI/MDIX remove the need for crossover cables in field installations. Engineers typically place it on a sensor hub or PLC backplane with isolated magnetics on each RJ45, drawing power from a 3.3V rail. Compared with discrete MAC+PHY designs, the integrated approach cuts BOM count by 2-3 ICs.
Direkomendasikan
IP Surveillance Camera Daisy-Chain
IP cameras with PoE and daisy-chained switch ports benefit from the KSZ8863RLLI's three-port managed switch with I2C/SPI host management. The on-chip PHYs connect one port to the network uplink, one to the local camera SoC's MAC, and one to a downstream daisy-chained camera - all without external magnetics on the PHY side. The integrated switch provides 802.1p QoS to prioritize video traffic over management frames. Power consumption is low enough for PoE Class 2/3 budgets. The 48-LQFP package fits a small camera PCB, and industrial temperature rating supports outdoor IP66 enclosures.
Direkomendasikan
Building Automation Backbone
Building automation controllers requiring multiple Ethernet ports for HVAC, lighting, and access control subsystems use the KSZ8863RLLI as a compact managed switch fabric. The I2C/SPI host interface allows a low-cost microcontroller to manage VLAN segmentation per subsystem, isolating building management traffic. Port 3 fiber support (100BASE-FX) lets the device bridge to long-distance building backbone cabling up to 2 km. The industrial temperature grade and Microchip long-term supply support makes the device suitable for 10-15 year building lifecycle deployments per typical building automation product lifetimes.
Direkomendasikan
Factory Automation PLC
Programmable Logic Controllers and industrial gateways use the KSZ8863RLLI to provide daisy-chainable Ethernet ports for EtherNet/IP, PROFINET, or Modbus TCP fieldbus traffic. The device's store-and-forward architecture with 1 Gbps fabric bandwidth delivers deterministic latency for real-time control loops. IEEE 802.1Q VLAN tagging allows logical separation of control and monitoring traffic on the same physical port. The -40C to +85C industrial rating and Microchip long-term product support fit the 10+ year lifecycle typical of industrial PLC deployments in factory automation.
Direkomendasikan
Embedded IoT Gateway
Embedded IoT gateways consolidating multiple Ethernet devices (sensors, edge controllers, wireless APs) into a single managed switch use the KSZ8863RLLI for its small footprint, low power, and integrated PHYs. The 48-LQFP 7x7 mm package allows the device to fit on compact gateway PCBs alongside WiFi/BLE modules. The I2C management interface lets a Linux SoC configure VLANs, port mirroring, and QoS for traffic shaping between WAN and LAN segments. The integrated HP auto-MDI/MDIX eliminates cable-type errors in field installations by installers who may use straight-through cables on all ports.
Direkomendasikan
Multi-Port Network Printer / MFP
Multi-function printers and network print servers that expose multiple Ethernet segments (internal, guest, secure) use the KSZ8863RLLI as a 3-port Layer 2 managed switch. The on-chip PHYs reduce PCB area versus a 3-chip MAC+PHY+switch solution. The I2C/SPI host interface allows the printer's main MCU to configure port-based access control, blocking guest traffic from secure internal networks. Low power consumption helps the device fit within ENERGY STAR printer power budgets. The industrial temperature grade supports commercial printer environments with elevated operating temperatures in enclosed printer chassis.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk KSZ8863RLLI — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | KSZ8863MLLI | KSZ8863FLLI | KSZ8873FLLI |
|---|---|---|---|---|
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Number of Ports | 3 | 3 | 3 | 3 |
| Data Rate | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| External MAC Interface | 1x RMII | 1x MII | 1x MII | 1x MII |
| Fiber Support | Port 3 only (100BASE-FX) | Port 3 only (100BASE-FX) | Port 3 only (100BASE-FX) | All 3 ports (100BASE-FX) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| RoHS Compliance | Yes | Yes | Yes | Yes |
Diferensiator Kunci
- Pin-compatible same-family alternative with MII instead of RMII (vsKSZ8863MLLI)
- Lower-cost same-family option if MII host is acceptable (vsKSZ8863FLLI)
- 3-port fiber on Port 3 only vs all 3 ports fiber (vsKSZ8873FLLI)
Catatan Desain
Place the 25 MHz crystal within 5 mm of the X1/X2 pins, with a ground guard ring around the crystal traces to minimize reference-clock jitter. The KSZ8863RLL Hardware Design Checklist from Microchip specifies that the X1 pin capacitor (pin 10) is system-dependent and must be tuned for the crystal CL and PCB stray capacitance. Use a crystal with ESR less than 50 ohm and 20 pF load capacitance for stable 25 MHz operation across the industrial -40C to +85C range.
Route the 100BASE-TX differential pairs (P1_TXP/N, P1_RXP/N, etc.) as 100 ohm differential impedances with matched length to within 2 mm. Keep the analog supply (VDD_33A) and digital supply (VDD_33) separated with ferrite beads to prevent switching noise from coupling into the PHY analog sections. The Port 3 fiber pins (FX_RXP/N, FX_TXP/N) should be guarded by a continuous ground plane to prevent crosstalk with the copper Port 3 differential pairs.
Do not leave the RMII_REF_CLK pin floating - it requires a 50 MHz reference clock from the host MAC or external oscillator. The HP auto-MDI/MDIX function eliminates the need for crossover cables, but if you wire Port 3 in fiber mode, you must strap the appropriate GPIO to disable the copper PHY on that port. The I2C/SPI mode select strap (SPISL) must be pulled up or down at reset to select the correct management interface - leaving it floating causes unpredictable behavior per the Microchip datasheet strap configuration table.
Informasi Konformitas
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. AEC-Q100 not applicable (industrial/consumer, not automotive qualified).