SN9C102_R_B_GAIN
WriteReg(SN9C102_R_B_GAIN, buf, 2);
Device()->WriteReg8(SN9C102_R_B_GAIN, 0x00); /* red, blue gain = 1+0/8 = 1 */
Device()->WriteReg8(SN9C102_R_B_GAIN, 0x01); /* red gain = 1+0/8 = 1, red gain = 1+1/8 !!? */