FEATURES GENERAL DESCRIPTION
 VESA DisplayPort Specification version 1.4a
 HDMI transmitter supports HDMI specification version
2.1/2.0/1.4b
 HDCP 1.4 and HDCP 2.3 standards
 Supports HDCP repeater mode
 High Dynamic Range (HDR) dynamic / static metadata
incorporated
 DTV profile uncompressed high speed digital interface
CTA-861-G
 DSC Standard v1.2a decoding and DSC bypass capable
 Video color space including RGB at 6/8/10/12 bpc,
YCbCr4:4:4 and YCbCr4:2:2 /4:2:0 at 8/10/12 bpc
 RGB to YCC 4:4:4/4:2:2/4:2:0 and YCC 4:4:4/4:2:2 to
YCC 4:2:0 color space conversions implemented
 Digital audio supports up to 8 channel LPCM(16/20/24
bit) with sample rate up to 192kHz, compressed audio
formats (AC3,DTS,DTS-HD MA, and Dolby MAT),
HBR audio formats with frame rate up to 1536kHz, and
3D audio format with sample rate up to 192kHz
 USB Type-C DisplayPort Alt-Mode to HDMI
2.1/2.0/1.4a protocol converter ready
 Integrated Ra, Rd and Rp resistors for DFP/UFP to
identify connection
 Seamless switch between Type-C SBU and DisplayPort
AUX Channel
 USB Power Delivery 3.1 on CC communication
 Fast VBUS Voltage detection module integrated to
support FRS and Charge Through functions
 Built-in USB Billboard Class 1.2.2 and USB 2.0 PHY
to support DisplayPort Alt-mode
 Embedded Microcontroller, ROM and EDID Buffer
 Firmware update through Chrontel proprietary
technologies
 Configurable Power Saving mode and low stand-by
current
 RoHS compliant and Halogen free package
 Offered in 68 pin QFN package
Upstream ( USB-C / DP )
 USB Type-C port compliant with USB Type-C Cable
and Connector Specification revision 2.0
 USB PD 3.1 compliant
 Compliant with DisplayPort Alternate Mode on USB
Type C standard
 Compliant with VESA DisplayPort Specification
version 1.4 and and Embedded DisplayPort (eDP)
Specification version 1.4
 Supports up to 4 Main Link Lanes at 1.62Gbps,2.7Gbps
(HBR), 5.4Gbps (HBR2) and 8.1Gbps (HBR3) link rate
 Automotive DP input signal detection and Lane swap
Chrontel’s CH7218A is a low-cost, low-power
semiconductor device that translates the DisplayPort
signal to HDMI 2.1 through the USB Type-C connector.
This innovative USB Type-C based DisplayPort receiver
with a high performance DSC decoder, an integrated
HDMI 2.1 Transmitter is specially designed to target the
USB Type-C to HDMI 2.1 converter, adopter and
docking device. Through the CH7218A’s advanced
decoding / encoding algorithm, the input DisplayPort
high-speed serialized multimedia data can be seamlessly
converted to HDMI/DVI output.
The CH7218A’s DP receiver is compliant with the
DisplayPort Specification 1.4 and Embedded DisplayPort
(eDP) Specification version 1.4. With sophisticated
DisplayPort signal detection and the Lane Swap/AUX
polarity inversion logic, the CH7218A supports USB
Type-C cable plug orientation switch. With internal
HDCP key Integrated, the device supports HDCP 1.4 and
2.3 specifications. In the device’s receiver block, which
supports four DisplayPort Main Link Lanes input with
data rate running at 1.62Gbps, 2.7Gbps, 5.4Gbps or
8.1Gbps, and converted the input signal to HDMI output
up to 8Kx4k@60Hz or 4K2K@120Hz in Fixed Rate Link
mode. Leveraging the USB Power Delivery control logic,
the USB billboard module for USB device indentify and
DisplayPort’s Link Training routine, the CH7218A is
capable of instantly bring up the video display to the
HDMI 2.1 TV/Monitor when the initialization process is
completed.
The CH7218A also supports up to 8-channel audio input
from DP Rx and output from HDMI Tx with sample rate
up to 192 KHz. Available audio bandwidth depends on
the pixel clock frequency, the video format timing, and
whether or not content protection re-synchronization is
needed.
With sophisticated MCU and the On Chip Flash,
CH7218A support auto-boot and EDID buffer.
Leveraging the firmware auto-loaded from the embedded
ROM, CH7218A can support DP input detection, HDMI
connection detection, and determine to enter into Power
saving mode automatically.
supported for compliance with the USB type C cable
plug orientation switch
 RGB at 6/8/10/12 bpc, YCbCr4:4:4 and YCbCr4:2:2
/4:2:0 at 8/10/12 bpc input formats supported
 Fast and full Link Training for embedded DisplayPort
system
 Supports eDP Authentication: Alternative Scramble
Seed Reset and Alternative Framing
 Supports Spread Spectrum Clocking (de-spreading) for
EMI reduction
 Forward Error Correction supported
 Adaptive-Sync supported
 Programmable/Adaptive equalizer to compensate for
Cable, PCB and/or connector losses
 1/2/4/8 Slices DSC decoding supported.
Downstream ( HDMI )
 HDMI transmitter compliant with HDMI specification
version 2.1
 Supports 4 Main Link Lane up to 12 Gbps Fixed Rate
Link (FRL) data rate for video timing up to
8Kx4k@60Hz, 4K2K@120Hz, 4K2K@144Hz or
4K2K@240Hz
 Supports up to HDMI 6Gbps TMDS data rate or 600
MHz TMDS clock for video transport
 RGB at 6/8/10/12 bpc, YCbCr 4:4:4 / 4:2:2 / 4:2:0 at
8/10/12 bpc output formats supported
 Progressive 3D video formats supported
 Variable Refresh Rate supported
 DSC pass-through supported
 SCDC supported on HDMI DDC
 FRL link training supported
 CEC tunneling over AUX supported
 Automatic Low Latency Mode supported
 Graphic test pattern generator integrated
APPLICATION
 Onboard DP to HDMI 2.1 conversion
 USB Type C to HDMI cable/Adapter/Docking Station
 USB Type C Receptacle display device