Microchip Technology LAN938x 100BASE-T1 Gigabit Ethernet Switches

Microchip Technology LAN938x 100BASE-T1 Gigabit Ethernet Switches are scalable, compact, and cost-effective multi-port switches based on the IEEE 802.3bw-2015 specification. These devices feature a layer-2+ managed Ethernet switch with up to five 100BASE-T1 PHY transceivers (four for LAN9381/2, five for LAN9383/4), up to three MAC ports, and an Arm® Cortex® M7 CPU subsystem. The LAN938x family features 2MB of integrated flash memory and a hardware security engine, offering a comprehensive single-chip AVB/TSN bridge solution. The LAN9382/4 models also offer a 100BASE-TX port for applications requiring an automotive OBD connection. Microchip Technology LAN938x switches are available in two temperature ranges and are AEC-Q100 qualified for use in gateways, advanced driver assistance systems (ADAS), infotainment, telematics, and in-vehicle networking systems.

Features

  • 4x 100BASE-T1 ports
  • 2x RGMII/RMII/MII
  • 1x RGMII/RMII/MII or (1G/2.5G) SGMII port
  • 300MHz Arm Cortex M7 CPU subsystem
  • Integrated 2MB flash code memory
  • Hardware security engine
  • Cascade mode for higher port count
  • Enhanced EMC performance
  • Full AVB audio video bridging
  • Time-sensitive networking support
  • OPEN alliance TC10 sleep/wakeup
  • LinkMD®+ enhanced cable diagnostics
  • flexPWR® technology power management
  • Small-footprint 128-pin TQFP (14 x 14 mm) package
  • Industrial temperature (-40°C to +85°C), Grade 2 automotive temperature (-40°C to +105°C)
  • Switch management capabilities
  • Full wire-speed, non-blocking Gigabit switch core
  • <140ms “Ethernet Ready” time, with secure boot
  • IEEE 802.1Q VLAN support
  • AVB and TSN hardware support
  • Smart low-latency cut-through forwarding mode
  • Deep Packet Inspection (DPI) using TCAM
  • IEEE 1588v2 PTP and clock synchronization
  • Time-aware precision GPIO
  • OPEN Alliance (TC1) advanced diagnostics compliant
  • Self-test packet generator/detector
  • Extended MIB performance counters
  • EtherGREEN™ energy efficiency
  • Low RF emissions
  • OPEN Alliance (TC6) RGMII EPL compliant
  • Hardware security engine
  • AEC-Q100 automotive product qualification
  • Functional safety ready
  • Compliant to OPEN TC11 switch requirements

Applications

  • Gateways
  • ADAS
  • Infotainment
  • Telematics
  • In-vehicle networking

Videos

Block Diagram

Microchip Technology LAN938x 100BASE-T1 Gigabit Ethernet Switches
Opublikowano: 2024-09-27 | Zaktualizowano: 2025-10-31