Description

VIA Lab’s VL717 is a high performance, low power single chip USB 3.1 Gen2 to SATA 6GB/s bridge controller with PD sink mode support for USB type-C connector designed for new generation external storage devices. Its integrated in-house USB 3.1 Gen2 PHY enables VL717 to run in USB 3.1 Gen2, USB 3.1 Gen 1, High-Speed, and Full-Speed modes. Supporting USB mass storage class Bulk-Only Transport (BOT), VL717 based devices can work on Windows 10, Windows 8, Windows 7, Vista, XP, Mac OS X and various Linux kernels without additional driver. Besides Bulk-Only Transport, VL717 also support USB Attached SCSI Protocol (UASP) that allowing mass storage command queuing and out of order data transfers to further enhance read/write performance. Its integrated in-house SATA 6GB/s host controller can work with all SATA based storage devices and can connect at SATA 6GB/s, SATA 3GB/s, or SATA 1.5GB/s automatically. Built-in CC1/CC2 cable orientation detection circuits and two sets of USB signal pins, VL717 can support USB type-C receptacle natively with good signal integrity to enable USB-C cable flipping feature without any extra cost. VL717 also support Power Delivery sink mode that can check host power capability and ask host to source its maximum power. Built-in all required linear and switching voltage regulators, highly integrated VL717 work perfectly with single power input from USB 5V bus power to save customer BOM cost. Up to eight GPIO pins are available for push button, operation LEDs, device power down control, and other special usage. The SPI interface can support external flash for firmware upgrades or additional software enhancements. VL717 is available in QFN 48L (6x6x0.85 mm) green packages to fit small form-factor design.

Block Diagram

Key Features

• USB 3.1 Gen2 (10GB/s) and USB High-Speed (480Mb/s)
  - Compliant to Universal Serial Bus 3.1 Specification Revision 1.0
  - Compliant to Universal Serial Bus Specification Revision 2.0
  - Mass Storage Class Bulk-Only Transport (BOT)
  - USB Attached SCSI Protocol (UASP) for streaming
  - Integrated in-house USB 3.1 Gen2 PHY and USB2.0 PHY
• Serial ATA 6GB/s, 3GB/s and 1.5GB/s
  - Compliant to Serial ATA Specification Revision 3.1
  - Integrated in-house SATA 6GB/s PHY
  - RBC command conversion for ATA device
  - MMC-2 command pass-through to ATAPI
  - Supports 48-bit LBA and multiple LUN
• Fast 8051 Macro cell 80C32-Compatible Microcontroller
  - Standard 1T 8051 instruction set
• USB Type-C connector support
  - Standard 1T 8051 instruction set
• USB Type-C connector support
  - Compliant to USB Power Delivery Specification Revision 3.0 Version 1.1 at PD sink mode
  - CC1/CC2 cable orientation detection logic
  - Two sets of USB signal pins to enable USB-C cable flipping feature

• Built-in Voltage Regulators
  - 5.0V to 3.3V LDO
  - 5.0V to 1.2V switching DC-DC
• GPIOs for Special Function Usage
  - 6 GPIOs for customer special usage
  - 2 dedicated BUSY/POWER LED indicators
• Misc
  - Supports device power down function
  - Supports external SPI flash for firmware upgrade
• Software
  - Supports Microsoft Windows 10, Windows 8, Windows 7, Vista, XP
  - Supports Mac OS 10.X
  - Supports various Linux kernels
• Physical
  - QFN 48L green package (6x6x0.85 mm)
• Certification
  - QFN 48L green package (6x6x0.85 mm)