General Description

ASMedia ASM3142 is the next generation Universal Serial Bus xHCI host controller, bridging PCI Express to USB3.1 Gen-II, compliant with USB3.1 Specification Revision 1.0 and Intel eXtensible Host Controller Interface specification revision 1.1. It also supports backward compatible with legacy USB function and devices, compliant with USB Attach SCSI Protocol revision 1.0, supporting the function of debugport on port A of USB.

ASMedia ASM3142 also supports the new feature of USB3.1 Gen2, named Multiple INs to achieve fully utilization rate of 10Gbps data rate, taking advantage of the available bandwidth of USB3.1 Gen2 bus.

ASM3142 supports two USB3.1 Gen-II ports and perform trusting high speed bandwidth with PCI Express Gen-III x2 supporting. It uses advance process with low voltage supply, following standard PCI Express/USB bus power management and advance chip power management to reduce total power consumption efficiently under idle/standby state.

ASM3142 integrates ASMedia self-designed PCI Express/SuperSpeed USB/USB2.0 PHY, supporting in box driver of Microsoft® Windows and various Linux kernels. The application of ASM3142 includes Motherboard, Desktop PC, Notebooks, Workstations, Servers, Add-in cards, PCI Express based embedded platform.


General Feature

  • Bridge PCI Express to USB3.1
  • Integrate eXtensible Host Controller
  • Compliant with eXtensible Host Controller Interface specification Revision 1.1
  • Upload firmware through external SPI ROM
  • External 20MHz differential crystal
  • Support in box driver of Microsoft® Windows
  • Support various Linux kernels

PCI Express Feature

  • Support PCI Express Gen-III x2
  • Support high bandwidth performance with low latency
  • Support PCI Express Link power management
  • Compliant with PCI Express Base 3.0 Specification
  • Compliant with PCI Express Card Electromechanical 2.0 specification
  • Compliant with PCI Express Mini Card Electromechanical 1.2 specification
  • Compliant with PCI Bus Power Management Interface Specification Revision 1.2
  • Compliant with PCI Local Bus Specification Revision 3.0
  • Integrate Spread Spectrum Controller for PCI Express interface
  • Overclock capability on PCI Express bus
  • Support SRIS mode
  • Not support lane reversal

USB Feature

  • Support two ports of USB3.1
  • Up to USB3.1 Gen-II 10Gbps
  • Compliant with Universal Serial Bus 3.1 Specification Revision 1.0
  • Compliant with Universal Serial Bus Specification Revision 2.0
  • Compliant with USB Attached SCSI Protocol Revision 1.0
  • Support Muliple INs function
  • Support USB3.1 and USB2.0 Link Power Management 
  • Support Control, Bulk, Stream, Interrupt, Isochronous transfer type
  • Support independent port power control
  • Support overcurrent detection
  • Support Remote/Wakeup event
  • Integrate Spread Spectrum Controller for USB3.1 interface
  • Backward compatible with Legacy USB function and device
  • Support the Debugport

Package Type

Green Package 9x9 QFN64 (Pb-free) - RoHS Compliance


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