Chrontel's CH7517 is a low-cost, low-power semiconductor device that translates the DisplayPort signal to the VGA. This innovative DisplayPort receiver with an integrated VGA encoder is specially designed to target the notebook/ultrabook, tablet device and PC market segments. Through the CH7517's advanced decoding / encoding algorithm, the input DisplayPort high-speed serialized multimedia data can be seamlessly converted to analog RGB video output.

The CH7517 is compliant with the DisplayPort specification version 1.2 and the Embedded DisplayPort Specification version 1.3. In the device's receiver block, which supports two DisplayPort Main Link Lanes input with data rate running at either 1.62Gb/s or 2.7Gb/s, can accept RGB digital formats in either 18-bit 6:6:6 or 24-bit 8:8:8, and converted the input signal to VGA output up to 1920x1200@60Hz or 2048x1152@60Hz with reduced blanking. Leveraging the DisplayPort's unique source/sink “Link Training” routine, the CH7517 is capable of instantly bring up the video display to the VGA monitor when the initialization process is completed between CH7517 and the graphic chip.

The DACs are based on current source architecture. And the VGA output meet VESA VSIS v1r2 clock jitter target. With sophisticated MCU and the on-chip Flash, CH7517 support auto-boot and EDID buffer. After the configuration by firmware, which is auto loaded from the Flash embedded, CH7517 supports DisplayPort
input detection, DAC connection detection and determine to enter into Power saving mode automatically.

•   Crystal Oscillator, AN-B035


•   CH7018 SDTV/HDTV Encoder TV Connection Detection, AN-B037.

Input Interface eDP/DP

Output Interface VGA, Analog RGB + Csync

Audio Interface,IIS / SPDIF input

Other features No

Package Type QFN40

Part Number Package Type Operating Temperature Range Minimum Order Quantity

CH7517A-BF 40 QFN, Lead-free Commercial : 0 to 70°C 490/Tray

CH7517A-BFI 40 QFN, Lead-free Industrial : -40 to 85°C 490/Tray