DATA SHEET - Glyn High-Tech Distribution

HX8346-A(T)240RGB x 320 dot, 262K color, TFT Mobile Single Chip Driver5.9.5 Variable resisterDATA SHEET V01There are two types of variable resistors, one is for center adjustment, the other is foroffset adjustment. The resistances are decided by setting values in the centeradjustment, offset adjustment registers. Their relationship is shown below.Value in RegisterO(P/N)0 3-0ResistanceVRO(P/N)0Value in RegisterO(P/N)1 4-0ResistanceVRO(P/N)1Value in RegisterC(P/N)0/1 2-00000 0R 00000 0R 000 0R0001 2R 00001 1R 001 4R0010 4R 00010 2R 010 8RResistanceVRC(P/N)1••••011 12R•••• 100 16R1101 26R 11101 29R 101 20R1110 28R 11110 30R 110 24R1111 30R 11111 31R 111 28RTable 5. 11 Offset Adjustment 0 Table 5. 12 Offset Adjustment 1 Table 5. 13 Center Adjustment8 to 1 SelectorThe 8 to 1 selector has eight input voltages generated by gamma resister stream andoutputs one reference voltages selected from inputs for gamma reference voltagegeneration by setting value in macro adjustment register. There are six 8 to 1selectors and the relationship is shown below.Value in RegisterVoltage levelM(P/N) 2-0 Vg(P/N) 4 Vg(P/N) 32 Vg(P/N) 80 Vg(P/N) 176 V(P/N) 224 V(P/N) 252000 VR1 VR9 VR17 VR25 VR33 VR41001 VR2 VR10 VR18 VR26 VR34 VR42010 VR3 VR11 VR19 VR27 VR35 VR43011 VR4 VR12 VR20 VR28 VR36 VR44100 VR5 VR13 VR21 VR29 VR37 VR45101 VR6 VR14 VR22 VR30 VR38 VR46110 VR7 VR15 VR23 VR31 VR39 VR47111 VR8 VR16 VR24 VR32 VR40 VR48Table 5. 14 Output Voltage of 8 to 1 SelectorHimax ConfidentialThis 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.66-July, 2007