Apalis Carrier Board Design Guide - Toradex

12+Apalis Carrier Board Design Guide2.6.3.2 VGA DAC Schematic ExampleThe Apalis standard features a dedicated VGA interface. Nevertheless, it is possible to add aparallel RGB to VGA converter if an additional VGA interface is needed or a specific Apalis moduledoes not feature VGA output at the VGA pins. For additional information about the availability of adedicated VGA interface and whether it is independent from the parallel RGB interface, pleaseconsult the applicable Apalis module datasheet.3.3V5VV_DISPR61.8KI2C2_DDC[0..1]X1YI2C2_SCL205 MXM3_205 R1 22R I2C2_SDAI2C2_SDA207 MXM3_207 22R I2C2_SCLI2C2_SDAI2C2_SCLR2Apalis - Display DDC25 of 25MM70-314-310B1X1LLCD[0..28]BKL1_PWM 239243 MXM3_243 R10 22R LCD1_PCLKLCD1_R7LCD1_PCLK245 MXM3_245 R11 22R LCD1_VSYNCLCD1_R6LCD1_VSYNC247 MXM3_247 R12 22R LCD1_HSYNCLCD1_R5LCD1_HSYNC249 MXM3_249 R13 22R LCD1_DELCD1_R4LCD1_DE286 MXM3_286 R14 22R BKL1_ONLCD1_R3BKL1_ONLCD1_R2251 MXM3_251 R16 22R LCD1_R0LCD1_R1LCD1_R0253 MXM3_253 R17 22R LCD1_R1LCD1_R0LCD1_R1255 MXM3_255 R18 22R LCD1_R2LCD1_R2257 MXM3_257 R19 22R LCD1_R3LCD1_G7LCD1_R3259 MXM3_259 R20 22R LCD1_R4LCD1_G6LCD1_R4261 MXM3_261 R22 22R LCD1_R5LCD1_G5LCD1_R5263 MXM3_263 R23 22R LCD1_R6LCD1_G4LCD1_R6265 MXM3_265 R24 22R LCD1_R7LCD1_G3LCD1_R7269 MXM3_269 R25 22R LCD1_G0LCD1_G2LCD1_G0271 MXM3_271 R26 22R LCD1_G1LCD1_G1LCD1_G1273 MXM3_273 R27 22R LCD1_G2LCD1_G0LCD1_G2275 MXM3_275 R29 22R LCD1_G3LCD1_G3277 MXM3_277 R30 22R LCD1_G4LCD1_B7LCD1_G4279 MXM3_279 R31 22R LCD1_G5LCD1_B6LCD1_G5281 MXM3_281 R32 22R LCD1_G6LCD1_B5LCD1_G6283 MXM3_283 R33 22R LCD1_G7LCD1_B4LCD1_G7287 MXM3_287 R34 22R LCD1_B0LCD1_B3LCD1_B0289 MXM3_289 R35 22R LCD1_B1LCD1_B2LCD1_B1291 MXM3_291 R36 22R LCD1_B2LCD1_B1LCD1_B2293 MXM3_293 R37 22R LCD1_B3LCD1_B0LCD1_B3295 MXM3_295 R38 22R LCD1_B4LCD1_B4297 MXM3_297 R39 22R LCD1_B5LCD1_PCLKLCD1_B5299 MXM3_299 R40 22R LCD1_B6LCD1_B6GND301 MXM3_301 R41 22R LCD1_B7LCD1_DELCD1_B7BKL1_ONApalis - Digital RGB12 of 25MM70-314-310B1LCD1_HSYNCR71.8K48474645444342411098765432322212019181716241211385VGNDGND2C1100nF16V 1IC2R7R6R5R4R3R2R1R0G7G6G5G4G3G2G1G0B7B6B5B4B3B2B1B034IC1CLOCKSYNC#BLANK#PSAVE#C5100nF16VADV7125KSTZ14025C21100nF16V3VREF1GNDSCL1SDA1PCA9306DCTT3.3V36AVREF35COMPC6100nF16VGNDGNDGNDGNDGNDGNDGNDGNDGNDIC3VCCGNDVREF2SN74LVC1G17141525263940YNCENSCL2SDA241100K78100nF65IOR+IOG+IOB+IOR-IOG-IOB-VAAVAAVAARSETR4433RR3C216VGNDR41.8K34333231282713293037R5GND1.8KGNDGNDVGA_GREENGNDGNDVGA_BLUEGNDR42560RL6500mAR822RR922RR1575RR2175RR2875RVGA_REDC1410nF25V220R@100MHzL1500mA220R@100MHzL2500mA220R@100MHzGNDGNDC15100nF16VC2047pF50VC34.7pFC710pF50VC910pF50VGNDL3600mA40R@100MHzC1610nF25VC44.7pFC17100nF16VC810pF50VGNDL4600mA40R@100MHzC1010pF50VL5600mA40R@100MHzC1110pF50VGNDGNDLCD1_HSYNC_CI2C2_DDC_SCL_CI2C2_DDC_SDA_CC1210pF50VC1810nF25VC19100nF16VPLACE D1, D2 NEAR THE VGA CONNECTORSHIELD2RCLAMP0504SVGA_RED_CVGA_GREEN_CVGA_BLUE_C3.3VGNDC1322uF10VD1I2C2_DDC_C[0 .1]D2SHIELD2V_DISPGNDRCLAMP0504S31JP15VVGA_RED_CVGA_GREEN_CI2C2_DDC_SDA_CVGA_BLUE_CLCD1_HSYNC_CLCD1_VSYNC_CI2C2_DDC_SCL_C2D3BAT54R43120RPIN9V_DISPGNDGNDGNDPIN9GNDGNDX24A16 611 11 12 7712 12 23 88 13 3134 99 14 414 10510 15 515HDR15SN-HX24B HDR15SN-HSHIELDSHIELD2 SHIELD2IC4L7LCD1_VSYNC24 R45LCD1_VSYNC_CA Y500mA33R 220R@100MHz C2255V47pFC23 VCC100nF50V16V31GNDGND NCGNDSN74LVC1G17Figure 31: VGA DAC reference schematicToradex AG l Altsagenstrasse 5 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l info@toradex.com Page | 36