EZ335X-EVB Hardware Manual
Contents
1. www qiytech com 2012 Qiyangtech Copyright Page 7 of 26 Q ly ang EZ335X EVB Hardware Manual Back plane 4 layer high precision immersion gold process Main Board Power lt 2W Consumption Operation i Temperature 20 C 70 C Humidity Range 5 95 Non Condensing 2 3 Core Board Resources High precision 6 layer PCB of core board hardware resources integration of CPU NorFlash RAM NAND Flash the back network chip clock chip crystal oscillator as many as 120 pins ed AKEEF p rn 286864604 Picture 2 TIAM335X CPU 3352 3354 3359 720MHz 256M DDR2 SDRAM 256MB NandFlash 2MB DataFlash RTL8211E network chip support 10M 100M 1000M adaptable Ethernet with RMII mode Size 74mm 53mm only a size of a business card suitable for various embedded applications Core board on each two sides is using 2 pieces of 2 30 pins connector to lead all resources of cpu which is convenient for hardware clipping and multiple platforms using Power Supply 5V adopt TI s MPU management chip output voltages required by core board low power consumption power consumption is less than 2W Provide reset circuit and wake up function 2 4 Back plane Resource It expands the standard DEMO back plane using high precision 4 layer PCB Any question please send E mail supports qiyangtech com Page 8 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech2. 010101210 NandFlash Startup 0 010 0 010 0 0 SD Card Startup Lii toli foo Loto to poo VI Remark 1 Before connect to LCD confirm LCD power specification 2 Please use the original connecting accessories avoid damaging the main board 3 We ensure offering communication technology support through E mail telephone for lifelong technical support service 4 We ensure offering 6 months repair service for free if malfunction occurs in warranty because of quality problem contact our retailer or our company with purchase receipt in warranty period we will repair or replace it 5 Under these circumstances we do not offer repair for free e Over warranty time e Do not have purchase receipt e Liquid inlet Damp or Mold e Malfunction and damage is not due to product quality but drops intense sharking arbitrarily modify disoperation after purchase e Damage of force majeure 6 We reserve intellectual property for the software and hardware technical data of IAC 335X Kit users can only use them for teaching testing researching Any question please send E mail supports qiyangtech com Page 24 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Q Iy ang EZ335X EVB Hardware Manual Shall not be engaged in any commercial purpose Shall not distribute them on the Internet Shall not intercept modify them to tamper copyright 7 We accept
3. batch order we can offer technical support and service Any question please send E mail supports qiyangtech com Page 25 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Q Iy ang EZ335X EVB Hardware Manual Hangzhou Qiyang Intelligent Technology Co Ltd Tel 86 571 87858811 87858822 Fax 86 571 89935912 Technology Support 86 571 89935913 E MAIL supports qiyangtech com Website http www qiytech com Address 5F Building 3A NO 8 Xiyuanyi Road West Lake Science Park Hangzhou China Post Code 310030 Any question please send E mail supports qiyangtech com Page 26 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright
4. Bl RS485_B0 1 2 4 RS485_Al RS485_A0 Picture 8 J17 pin definition RS485 Ta feses a feses e E sles ape 5 8 USB EZ335X EVB back plane provides 1 ch USB Host J20 support USB 2 0 support a variety of USB flash drive mobile hard disk all kinds of USB Hub USB mouse keyboard etc USBO_ID USB1_ ID Picture 9 Any question please send E mail supports qiyangtech com Page 17 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Q 1y ang EZ335X EVB Hardware Manual Remark USB_ID Signal pull up USB _ Device pull down USB_Host 5 9 SD Card EZ335X EVB back plane with 1 SD card interface J21 adopts standard SD socket support various capacity SD card 32 x 24 x 2 1mm 5 10 Ethernet EZ335X EVB development board provides 2 ch Ethernet interface J22 J23 RJ45 with Ethernet indicator J22 Ethernet expansion chip on core board U6 J23 Ethernet expansion chip on back plane U13 The above 2 Ethernet ports are gigabit Ethernet port support 10M 100M 1000M adaptively Ethernet port connect to standard network cable 5 11 Audio EZ335X EVB back plane provides audio input output J4 J5 J6 adopts McASP interface realize 1 ch audio output can connect to earphone and active speaker binaural line input and MIC interface input Audio expansion chip adopts TI s TLV320AIC3 1IRHB U1 specific expansion scheme please
5. DI 10 LCD D14 GND 14 LCD_Do 16 LCD_D8 LCD DIO SE LCD Di LCD D3 5 27 8 LCD_VDD lee Ile fas apnt ujom 3 3 Ea 27 Q Z J Q Q Q Z Z Z J J J keck 7 Q Z J Remark Confirm the drive voltage for the LCD select 3 3V SV by jumper J8 JS pin definition LCD power supply select voltage according to LCD panel Any question please send E mail supports qiyangtech com Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Page 20 of 26 e Q Iy ang EZ335X EVB Hardware Manual 3 3VD LCD VDD 5 0VD 48 Picture 11 Instruction Pinl connect with pin2 is 3 3V power supply Pin2 connect with pin3 is 5V power supply Remark If LCD needs 5V power supply jumper 3 3V may appear unstable voltage and flash screen situation If LCD need 3 3V power supply jumper 5V may appear dithering ghosting screen and long time work may cause LCD damage 5 14 AD Input Interface CPU with 8 ch 12 bit ADC 4 ch 12 bit ADC are for touch panel signal another 4 ch ADC is in J9 J9 pin definition ADC Interface J9 4 ch is for AD input Any question please send E mail supports qiyangtech com Page 21 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Q 1y ang EZ335X EVB Hardware Manual SR Ee 5 15 CAN Bus Interface Back Plan
6. Qiyang EZ335X EVB Development Board Hardware Manual Version No 1 0 2013 07 QIYANG INTELLIGENT TECHNOLOGY CO LTD Copyright Reserved e Iyang Q an EZ335X EVB Hardware Manual Company Profile Hangzhou Qiyang Technology Co Ltd is located at the bank of the beautiful West Lake It is a high and new technology enterprise which is specializing in R amp D manufacture and sell embedded computer main board with high performance low power consumption low cost small volume and provides embedded hardware solutions We Offer Research amp develop manufacture and sell embedded module products which have independent intellectual property rights and cooperate with TI ATMEL Cirrus Logic Freescale and other famous processor manufacturers It has launched a series of hardware products such as ARM development board ARM core module ARM industrial board sound video decoding transmission platform supporting tools and software resources which support user for their next embedded design We give full play to the technical accumulation in ARM platform and Windows CE Linux Android operating system for many users providing custom service OEM ODM to realize embedded products into the market stably reliably and quickly Tel 86 571 87858811 86 571 87858822 Fax 86 571 87858822 Technology Support E mail suppor t qiyangtech com Website http www giytech com Address 5F Building 3A No 8 Xiyuanyi Road West Lake
7. Science Park Hangzhou China Post code 310030 Any question please send E mail supports qiyangtech com Page 2 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Iyang Q an EZ335X EVB Hardware Manual Catalogue I Suggestion For Using EE eebe erger 4 Ila Board Feat reS cera e E E E 4 2 1 Processor SUNMary civseissvavtsndsientiacadneniacvwnnvanadnvaadns suncsdchaptannasbussnattonesdeusesesyactipeencecuies 4 2 2 Development EE 7 2 3 Cor Board EE 8 2 4 Back plane E 8 M Size amp Structure Chart E 10 SNE 10 Se ME 11 IV Device Connection Pictorial View cccccccccesscssesecssesscseeeecssececesecseesecsecsecsesesecseesecseeseeneens 13 V Detailed Hardware Specifications sc cicchcvescxecsnesaitata aint sheciasiecuunitaecaseoaaereatereacelanunieicnsausts 14 5 1 Power Management Module eerste Eeer 14 EE 14 5 3 NandF lash E 15 5 4 Egbert E R RES 15 5 5 Debs UAR EE 15 5 6 RS232 Serial EE eege 15 5 7 RS483 Serial POT EE 16 5S Oc E 17 HA A BEE 18 E REN 18 Sc EE 18 SEENEN 19 5 13 TF LCD pannisssatccsr tienda iet den ne NEEESE EEATT EEE ERNER OSEERE ENEE 19 5 14 AD Input Interface eegener 21 515 CAN B s Interface sss ccasacesicevtres Eege 22 DIOJ EEN 22 KE d KEEN 23 5 18 Dial Switch Jumper WIS AW OM eet zeregerteuseesgebges dere sens scsnanccantscatnasenansvetasenenaceee 23 VaR NDNA acacia fee se tigee te resem E EE S 24 Any question pleas
8. bits resolution up d Display to 2048 2048 S ge VGA interface can be connected with universal display Z S Audio McASP audio interface binaural input output MIC audio S x Input E Input Interface 4 wire resistive touch panel S E ion 2 ch CAN bus interface support CAN2 0A and CAN2 0B xpansion Bus protocol Weed SD card interface Interface Dther Mcc Reset circuit wake up function real time clock buzzer JTAG interface oer 12V power supply can support 4 75V 18V wide range voltage supply Device Manual The component data manual Virtual Machine VMware workstation full 7 1 4 385536 Ubuntu ubuntu 10 10 desktop i386 iso E Cross compiler arm arago linux gnueabi tar gz gcc version 4 5 3 S Tool Terminal Common terminal development debugging tool A Source Code Bootloader kernel fs source code S Test Program Interface using demo test program and test program source D Code z Image File Operating system image file 6 User Manual Development board user manual Schematic PDF development board schematic PCB Library amp BOM PCB Library of back plane and BOM list Structure Size Chart Back plane structure size chart TI reference material TI authority AM335X reference material Oo Structure Size Core board 74mm 53mm S 8 A Back plane 142mm 112mm S S PCB Specification Core board Se He EE GEES Any question please send E mail supports qiyangtech com il trade qiyangtech com_sales qiyangtech com Sales E ma Website http
9. com 2012 Qiyangtech Copyright Q Iy ang EZ335X EVB Hardware Manual with the best electric performance and anti interference ability for logic control design of high speed industrial which users can customize it base on your own needs KS K3K4 K1K2 kleene gt uW tut lt 3 os Picture 3 Basic Interface Function Description LCD Interface LCD Interface External TFT LCD Panel 3 3V SV power supply LCD Power Supply LCD Power Supply umpet optional 4 bit AD input For ADC application VGA Output External VGA display Any question please send E mail supports qiyangtech com Page 9 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Q y ang EZ335X EVB Hardware Manual Debug UART Download Debug Prosan downloa communication debugging USB host USB 2 0 host Connect a USB device SD Card the back SD MMC Card Interface Expand storage application KEE E 10 100 1000M Ethernet Program download network communication application communication application JTAG Simulation debugging SHEET program J25 Power Input Power Input Eppes aun E voltage power supply Common use with Wake Up Button System Wake up System Wake up Function Reset Button System reset System reset function K3 K5 Custom Button Custom Button Custom Button S1 Power Switch Power Switch We SE Control S2 S3 S4 Dial Switch Select the startup mode N
10. com 2012 Qiyangtech Copyright Q Iy ang EZ335X EVB Hardware Manual Device Connection Pictorial View ARM Graphics Display Cortex A8 PowerVR 24 bit LCD controller EEN Se Touch screen controller 3D GEN Touch screen controller 32K 32K L1 w SED ee 256K 12 wECO EtherCAT PROFINET EOE LAMELE EtherNetiP 176K ROM 64K RAM and more UART x6 DMA ana ihi MMC SD x ADC 8 channel SPI x2 Timers x8 12 bit SAR SDIO x3 3 GPIO McASP x2 Ja g ETM ETB 4 channel eHRPWM x3 CAN x2 Crystal Ver 2 Aand B Oscillator x2 USB 2 0 HS OTG PHY x2 Memory interface i DDR LPDDR DDR2 DDR3 IEEE 1588v2 and switch LN 200 P HZ MII RMI RGMII NAND NOR 16 bit ECC Picture 1 ARM Cortex A8 720MHZ NEON SIMD Coprocessor 32KB of L1 Instruction and 32KB Data Cache with Single Error Detection parity 256KB of L2 Cache with Error Correcting Code ECC 24 bit LCD controller and touch panel controller resolution up to 2048 2048 2 ch USB2 0 OTG integrated PHY Support Max 6 ch UART 2 ch industrial gigabit Ethernet MAC 10 100 1000MHZ 2 ch CAN ports support CAN2 0 A amp B Integrated 2 ch PRU modules 2 ch multifunction audio channel Common peripheral Multichannel SPI IIC timer PWM DMA RTC etc SGX530 3D Graphics Engine Any question please send E mail supports qiyangtech com Page 5 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech
11. com 2012 Qiyangtech Copyright Qiyang EZ335X EVB Hardware Manual AM335X series chip ARM a Other Label ARM CPU MHz CH GN S iesen Hardware MAX Acceleration 275 1200 2 PRU ICSS AM3359 1 ARM Cortex A8 600 13D Crypto 1440 720 Accelerator 275 600 1000 2 PRU ICSS AM3358 1 ARM Cortex A8 1200 13D Crypto 500 1440 Accelerator 720 275 550 2 PRU ICSS AM3357 1 ARM Cortex A8 600 1200 Crypto 720 1440 Accelerator a a 2 PRU ICSS AM3356 1 ARM Cortex A8 Crypto 500 1200 E 720 1440 EE rm ron AM3354 1 ARM Cortex A8 1200 13D YP 500 Accelerator 1440 720 Goo Ju m AM3352 1 ARM Cortex A8 1200 Ma 500 1440 Accelerator 720 Any question please send E mail supports qiyangtech com Page 6 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Qiyang 2 2 Development Board Resource EZ335X EVB Hardware Manual CPU TI AM335X CPU ARM Cortex A8 720MHz S RAM 256MB DDR2 SDRAM Ge Flash 256MB NandFlash 2MB DataFlash g Network RTL8211E Network Chip adopt RGMII mode support a 10M 100M 1000M Power Single 5V power input low power consumption 6 ch RS232 serial port com0 as the debug UART Ee 2 ch USB2 0 high speed OTG T 2 ch 10 100 1000Mbps Ethernet port with ACT LINK a indicator z 16 bit TFT LCD Compatible with 18 24
12. e expands 2 ch CAN bus J18 as shown CANHI1 Picture 12 Remark CAN bus support CAN2 0A and CAN2 0B protocol 5 16 JTAG Back plane boots JTAG interface J24 can do simulation and debugging interfaces are as follows JTAG14 TI Picture 13 Remark Users can download bootstrap program through network and serial port Any question please send E mail supports qiyangtech com Page 22 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Q Iy ang EZ335X EVB Hardware Manual etc Not use this interface specific information please refer to EZ335X EVB Linux user manual 5 17 RTC EZ335X EVB Back plane can extend precise clock circuit adopts DS1338 clock chip with 3 3V high capacity button battery X2 IT 12 5 32 768K 12 5pF U16 43 3VD xI vcc 7 IT X2 OUT r 0 1uF VBAT SCL 6 CO SCT 7 GND SDA 5 PCO SDA DS1338Z 33 Picture 14 5 18 Dial Switch Jumper Illustration EZ335X EVB back plane supports various startup modes supports the switch required dialing 3 3VD Picture 15 Any question please send E mail supports qiyangtech com Page 23 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Q Iy ang EZ335X EVB Hardware Manual Remark Pulling down is 1 Pulling up is 0 E SS Serial Port Startup ON
13. e send E mail supports qiyangtech com Page 3 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Iyang Q an EZ335X EVB Hardware Manual I Suggestion for Using EZ335X EVB 1 Please read the instructions first before using the development board 2 Before using please check the packing list and see whether there is a missing file in the CD 3 Please understand the basic structure and composition of the development board including the hardware resource allocation each pin definition of core board and back plane etc 4 If you need to develop on Linux system and burn program into the development board in addition to this document we also suggest reading another document EZ335X EVB Linux User Manual 5 If you need to develop on Linux system and burn program into the development board in addition to this document we also suggest reading another document EZ335X EVB Linux User Manual 6 We accept back plane customized by clients and batch order of core board for EZ335X EVB Il Board Features 2 1 Processor Summary EZ335X EVB development board adopts TI AM335X series chip For batch order users we can replace different chips to lower cost Standard configuration is AM3354 development board Any question please send E mail supports qiyangtech com Page 4 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech
14. iA MAX 3 L8V 300mA Mihm ES E We H ES I BS 5 0VD JS 5 Jee 5 0VD __ 1 8VD_VAUXI 3 3VD_VAUXS3 oe C115 E 1 8V 300mA MAX 4 3 3V 150mA MAX S ak DS ie PA 33VD_B a is u 233V z 2 BEN E i 3 3V 1S0mA MAX TARE z ver 23 3 300mA MAX oe 119 ay CU Si 2 2uF Silke S Picture 7 5 2 DDR2 Storage EZ335X EVB core board adopts 256M bytes DDR2 SDRAM by 2 8 bit DDR2 SDRAM storage to 16 bit DDR2 SDRAM in parallel data and CLK signal lines operating speed are up to 133MHz Any question please send E mail supports qiyangtech com Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Page 14 of 26 e Q Iy ang EZ335X EVB Hardware Manual 5 3 NandFlash Storage EZ335X EVB core board provides with 128MB NAND Flash storage the back U4 32MB is used to store system image file Other space is used to store client s application program the user can make system curing and storage area distribution operations 5 4 DataFlash Storage EZ335X EVB core board provides 2MB Norflash U5 Mapping in banko Inside can store some startup codes as storing FIRSTBOOT nb0 on Data Flash this is a system bootloader also can save boot logo 24 bit bmp 5 5 Debug UART EZ335X EVB development board provides Debug UART J12 Used in development output system debugging information but cannot be used as a common serial port 5 6 RS232 Serial Port EZ335X EVB develo
15. iet modes for dig Ill Size amp Structure Chart 3 1 Core Board Size Unit mm if you need connector size please email supports qiyangtech com Any question please send E mail supports qiyangtech com Page 10 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright d Q ly an E EZ335X EVB Hardware Manual 8 Ly 4 QY J 399P V ati E K g S g CO wi L o e SE AECH 2 CH fat LP d A Picture 4 3 2 Back plane Size Unit mm if you need connector size please email supports giyangtech com Any question please send E mail supports qiyangtech com Page 11 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright d Q ly ang EZ335X EVB Hardware Manual J mmi I i K a gt gt z Cl SEI EEI j se bom j em Game JHAR d RE Picture 5 Any question please send E mail supports qiyangtech com Page 12 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Q Iy ang EZ335X EVB Hardware Manual IV Device Connection Pictorial View EZ335X EVB adopts back insert form and core board connects to back plane by 2 60 pins connector which constitutes the complete intelligent equipment the connection mode as shown Remark J1 of Core board i
16. nsert to J1 of back plane J2 of Core board insert to J2 of back plane thes Picture 6 Any question please send E mail supports qiyangtech com Page 13 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Qiyang V Detailed Hardware Specifications EZ335X EVB Hardware Manual The following information of all the chips mentioned are available in the CD following the datasheet folder please query if necessary 5 1 Power Management Module The power supply of EZ335X EVB core board adopts TI s MPU power management module needs 5V power supply separately outputs voltage through TPS65910AAIRSL U7 power management module 5 0VD TPS65910AAIRSL 28 31 FISD RTC i Ka ES C107 20mA MAX 2 VRRTC ee 5 0VD Fc108 e By BE OSC32KIN IND MPU Ce gt 35 S 500mA MAX yer OSC32KOUT n 35 a ae EM TouF 10 e 110 CLK32KOUT TouF 10V KE DER SCL 9 De SDA E53 8 Sc 5 0VD VS 2 LIVD CORE E GPIOICKSYN ae 1500mA cus y Den SCL Ze S SCLSR EN1 11 Bco spa DASRIEN BKS 10V 5 0VD 33VD_B z Le 18vD_DDR 4 R 1000A 126 EMU PWR EN RS Pi m Weil 9 a TEL TouF 10V z 60 H pad Es K sae 3 3VD_VAUXG3 1 8VD_VDAC mp ele L t L iea MA SVD 4 2 EC VDG Ss q l 1 v300mA MAX tz KA me BE DER Ir am a Ta cije LSV 50f
17. pment board provides 4 ch RS232 expand serial port chip ZT3232 development board U5 U6 U7 com4 comS multiplex with RS485 J13 J14 J15 J16 are corresponding to COM2 COM3 COM4 and COMS separately they are 3 wire serial port Com4 com5 reserve 5 wire serial port resource can be fluid control All interfaces can be DB9 standard serial port connector through serial expansion line Pins are defined as follows Any question please send E mail supports qiyangtech com Page 15 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Q Iy ang EZ335X EVB Hardware Manual J13 pin definition COM2 Interface J14 pin definition COM3 Interface J15 pin definition COM4 Interface J16 pin definition COMS Interface Pa os 4 fon 5 6 GND GND 5 7 RS485 Serial Port EZ335 EVB development board provides 2 ch RS485 serial port J17 Corresponding expansion chip U8 U9 SP3485 Any question please send E mail supports qiyangtech com Page 16 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Q Iy ang EZ335X EVB Hardware Manual 3 3VD 79 0 luF U8 UART4 RXD 1 RO Vcc i UART4 RTSn Ce ths DY i RDD rN Differential Pair R45 Jg NC SP3485EN j U9 UART5S_RXD E RO UARTS_RTSn e S UART5S_TXD 4 DI hok NC SP3485EN RS485_
18. view audio part in schematic diagram input output interface as shown Any question please send E mail supports qiyangtech com Page 18 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright e Q Iy ang EZ335X EVB Hardware Manual H MIC_INP MIC _ INN MIC Picture 10 Remark J4 is MIC audio input J5 is binaural audio output and J6 is binaural audio input 5 12 VGA EZ335X EVB back plane provides standard l ch VGA interface J10 standard DB15 interface can connect to universal display LCD CRT It expanded by LCD TTL signal in parallel specific expansion circuit please view LCD display part in schematic diagram 5 13 TFT LCD EZ335X EVB back plane provides 1 ch 16 bit RGB565 mode TFT LCD and touch panel interface J7 using 2 0 spacing 44 pin socket can drive TFT LCD panel resolution in theory can support to 2048 2048 in practical we suggest using maximum support to 800 600 which is the best result without dithering ghosting and other bad phenomena the last 4 pin of J7 are 4 wire Any question please send E mail supports qiyangtech com Page 19 of 26 Sales E mail trade qiyangtech com sales qiyangtech com Website http www qiytech com 2012 Qiyangtech Copyright Qiyang EZ335X EVB Hardware Manual resistive touch panel interface pins are defined as follows J7 pin definition LCD Interface LCD_VSYNC GND LCD
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