HX8347 - Adafruit

HX8347-G(T)240RGB x 320 dot, 262K color, TFT Mobile Single Chip DriverDATA SHEET Preliminary V015.10.2 Gray voltage generator for digital gamma correctionearing effect line modesThe HX8347-G digital gamma correction can reach the independent GAMMA curve ofRGB. HX8347-G utilizes DGC_LUT (Digital Gamma Correction Look Up Table) tochange input data from 6-bit into 8-bit and sends 8-bit data to Dithering circuit, andthen drive Source Driver via Dithering circuit. The following of the block diagram of thefunction.luminance of Bluminance of Bluminance of Gluminance of Gluminance of Rluminance of RFigure 5.36: Block diagram of digital gamma correctionThere are 99 bytes DGC LUT to set R, G, B gamma independently. When DGC_EN=1,R, G, B gamma will mapping V0, V2, V4, ...., V60, V62, V63 voltage to the LUT registersetting gray level voltage. V(2N+1) = (V(2N) + V(2N+2))/2 (N=0~30).Parameter Input (6 bit) D7 D6 D5 D4 D3 D2 D1 D0 Default Gray Mapping1st R00h R007 R006 R005 R004 R003 R002 R001 R000 00h R_V02nd R02h R017 R016 R015 R014 R013 R012 R011 R010 08h R_V23rd R04h R027 R026 R025 R024 R023 R022 R021 R020 10h R_V4::::::::::::::::::::::32nd R62h R317 R316 R315 R314 R313 R312 R311 R310 F8h R_V6233rd R63h R327 R326 R325 R324 R323 R322 R321 R320 FCh R_V6334th G00h G007 G006 G005 G004 G003 G002 G001 G000 00h G_V035th G02h G017 G016 G015 G014 G013 G012 G011 G010 08h G_V236th G04h G027 G026 G025 G024 G023 G022 G021 G020 10h G_V4::::::::::::::::::::::65th G62h G317 G316 G315 G314 G313 G312 G311 G310 F8h G_V6266th G63h G327 R326 G325 G324 G323 G322 G321 G320 FCh G_V6367th B00h B007 B006 B005 B004 B003 B002 B001 B000 00h B_V068th B02h B017 B016 B015 B014 B013 B012 B011 B010 08h B_V269th B04h B027 B026 B025 B024 B023 B022 B021 B020 10h B_V4::::::::::::::::::::::98th B62h B317 B316 B315 B314 B313 B312 B311 B310 F8h B_V6299th B63h B327 B326 B325 B324 B323 B322 B321 B320 FCh B_V63Himax ConfidentialFor Go-tek OnlyThis information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclosedin whole or in part without prior written permission of Himax.-P.104-October, 2009