Description

VIA Lab's VL605 is a highly integrated single-chip USB-C or DP 2.1 to HDMI 2.1 protocol converter, designed for USB-C video dongles and USB-C multi-function docks. It integrates two-port USB-C PD 3.1 controllers and USB Billboard device, enabling a single VL605 to convert DP signals to 8K@60Hz HDMI output by DP Alt-Mode or USB4 DP tunneling, and simultaneously charge the connected USB PD host once external power is detected. When accompanied by VLI's diversified USB Hub controllers, the VL605 can create various USB-C multi-function dock applications with USB PD charge-through function at different USB speeds.   The DP receiver port supports up to HBR3 8.1Gbps data rate over 4 lanes, and the HDMI source supports both FRL and TMDS transmitter. The FRL transmitter supports data rates up to 12Gbps, and the TMDS transmitter supports up to 6Gbps. Both DP receiver and HDMI source support color formats of RGB 8/10/12 bpc and YCbCr 4:4:4/4:2:2/4:2:0 8/10/12 bpc. Audio output supports up to 8 channels of LPCM up to 192kHz sample rate with sample sizes of 16, 20, and 24 bits and various compressed audio encoding formats. The VL605 has built-in HDCP 1.4 and HDCP 2.3 repeater function with embedded keys. The DP DSC compressed stream can be decoded by VL605 to uncompressed format or passed through directly to the connected HDMI sink.VL605 also supports HDR metadata handling for static and dynamic HDR content transmission. DP 2.1 Autonomous mode and Source-controlled mode are supported on VL605 as well.   The VL605 has a built-in 8051 microcontroller with an interface to external SPI flash, which can store its firmware code in standalone SPI flash or share SPI flash with VLI PD/Hub controller. Firmware upgrades can be done by USB Billboard, I2C slave interface, or DP AUX channel. To avoid malicious FW code attacks, VL605 can perform secure FW update by built-in ECDSA verify. Nine GPIO pins are available for specific application usage. VL605 is available in QFN 68L (8x8x0.85 mm).

Block Diagram

Key Features

• DisplayPort 2.1 Receiver Interface
  - Compliant to VESA DisplayPort Standard Version 2.1
  - DisplayPort 1, 2, and 4 lanes with RBR, HBR, HBR2, HBR3 data rates
  - Supports DP 2.1 PCON Autonomous mode and Source-controlled mode
  - Supports lane swap and polarity swap for flexible PCB layout
  - VESA Display Stream Compression Standard (DSC) V1.2a decoder with 8 slices and FEC
  - Bridging DP AUX Channel interface to HDMI DDC interface for EDID Pass-through
  - Supports CEC-Tunneling-over-AUX
  - Supports VESA Monitor Control Command Set (MCCS) over AUX
  - Supports color formats RGB 8/10/12 bpc and YCbCr 4:4:4/4:2:2/4:2:0 8/10/12 bpc
  - RGB/YCbCr color space conversion
  - YCbCr 444/422/420 downward conversion
  - HDCP 2.3 and HDCP 1.4 repeaters with on-chip keys
• HDMI 2.1 Source Interface
  - Compliant to High-Definition Multimedia Interface Specification Version 2.1
  - FRL mode data rate up to 12Gbps and TMDS mode data rate up to 6Gbps
  - Supports DSC pass-through mode and DSC decode mode
  - Supports color formats RGB 8/10/12 bpc and YCbCr 4:4:4/4:2:2/4:2:0 8/10/12 bpc
  - Audio output up to 8-channel 192KHz LPCM and compressed HBR audio, Dolby Vision, Dolby ATMOS, DTS:X formats
  - Supports static and dynamic High Dynamic Range (HDR)
  - Supports HDMI 2.0 HDR on Mac platform
  - Supports AMD Freesync

• Built-in 2-Port USB PD 3.1 Controllers and USB Billboard Device
  - Compliant to VESA DisplayPort Alt-Mode on USB Type-C Standard Version 2.0
  - Compliant to USB Type-C Cable and Connector Specification Revision 2.1
  - Compliant to USB Power Delivery Specification Revision 3.1 Version 1.3
  - Supports USB4 DP tunneling
  - Supports USB PD charge-through, Fast Role Swap, and Power Rule up to EPR 240W
  - Built-in USB Billboard that compliant to USB Device Class Definition for Billboard Devices Revision 1.22
  - Integrated in-house USB 2.0 Full-speed PHY
• Fast 8051 Macro Cell 80C32-Compatible Microcontroller
  - Standard 1T 8051 instruction set with embedded Mask ROM and SRAM
  - Supports firmware upgrade by external SPI flash or sharing SPI flash with VLI Hub and/or PD controller
• Built-in Asymmetric Secure FW Update by ECDSA Verify
  - Built-in ECDSA256, SHA256, and Random Number Generator
• Clock, Power Supply and Power Management
  - External 25 MHz crystal oscillator interface
  - 0.9V core power supply and 3.3V I/O power supply
  - Very low power operation when HDMI HPD is not detected (DP-to-HDMI: 2.3mW; USB-C-to-HDMI: 26.6mW)
• GPIOs and I2C for Special Function and Control
  - 9 GPIOs for application customization and one I2C master/slave interface whose mode set by FW
• Physical
  - QFN 68 green package (8x8x0.85 mm)
• Certification
  - USB-IF USB PD 3.1 EPR Certification TID: 10462
• Applications
  - USB-C to HDMI 2.1 dongle or Multi-function dongle by VESA DP Alt-Mode or USB4 DP tunneling