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[akd4185-a] evaluation board rev.0 for ak4185 a kd4185- a general description akd4185-a is the board for evaluation of the t ouch screen controller ak4185, which adopted the csp small package suitable for the cellular phone, the handheld game machine, etc. since akd4185-a has a touch-panel i/f and a digital i/o power supply input terminal, it is easily connectable with a target system of low power/voltage drive. furthermore, since the analog input terminal is equipped analog voltage and external battery voltage can also be measured. ordering guide akd4185-a --- evaluation board for ak4185 (cable for connecting with printer port of ib m-at compatible pc and control software are packed with this. this control software does not operate on windows nt.) function ? digital i/f for p ? touch-panel i/f (4-wire, 5-wire) ? analog input terminal ? digital i/o power supply terminal vdd a gnd ain_p ain_n ifvdd dgnd ak4185 4w-touch panel 5w-touch panel digital i/f port1 port2 figure 1. akd4185 block diagram * circuit diagram and pcb layout are attached at the end of this manual. 2007/11 - 1 -
[akd4185-a] board outline chart outline chart figure 2. akd4185-a outline chart vdd comment (1) 4/5 wire touch screen connector for the touch panel connection, match and c onnect the pins of the pane l with these connecters. (2) ain-p, ain-n ain-p is an analog input pin. the signal of 0v~vdd can be input. ain-n should be left open. (3) vdd, agnd, dgnd, ifvdd connect power supply with these pins. (4) d1 led turns on when the ak4185 is powered up. (5) port1 control port. connect the bundled cable into this port. (6) port2 test port. (7) jp1-8 see the following sections. ifvdd dgnd a in-n u3 jp8 u2 port2 1 10 d1 a gnd j2 5-wire touch screen 5 4 3 2 1 j1 4-wire touch screen 1 2 3 4 5 6 7 8 a in-p jp7 in/wiper-sel jp1 xp/br-sel jp2 yp/tr-sel jp3 xn/tl-sel jp4 yn/bl-sel jp5 ain-p jp6 ain-n cl1 12 tp1 tp2 tp3 tp4 tp5 tp6 tp7 tp8 tp9 tp10 port1 1 10 cn2 2007/11 - 2 -
[akd4185-a] operation sequence (1) set up the power supply lines. set up the jumper pins. jp8 vdd (short) set up the power supply lines. name color voltage comments vdd red +1.6 +3.6v(typ1.8v) power supply for vdd of ak4397. power supply for digital logic circuits. ifvdd orange +1.2 +3.6v(typ3.3v) agnd black 0v analog gnd. dgnd black 0v digital gnd. table 1 set up of power supply lines * each supply line should be distributed from the power supply unit. (2) set up the evaluation mode and jumper pins. (see the followings.) (3) power on. the ak4185 should be resets once open the jp8 and then short it. 2007/11 - 3 -
[akd4185-a] evaluation mode applicable evaluation mode (1) 4-wire touch screen position, pressure m easurement and evaluation of a/d using the analog input terminal. (2) 5-wire touch screen position measurement. (1-1) 4-wire touch screen position and pressure measurement. in case of evaluating a 4-wire touch screen function of the ak4185, it is necessary to connect the 4-wire touch panel with j1 terminal as shown table 2 . regarding pin assignment of j1, refer to table 2 or circuit diagram in this manual. as for the ak4185?s register definitions, refer to datasheet of the ak4185. 4-wire resistive touch panel should be connected to j1. the pin assignment of j1 is shown on table 2. no. name description 8 7 4w-yn 4-wire touch screen y ? plate voltage supply 6 5 4w-yp 4-wire touch screen y + plate voltage supply 4 3 4w-xn 4-wire touch screen x ? plate voltage supply 2 1 4w-xp 4-wire touch screen x + plate voltage supply table 2. j1 (8p header) pin assign set up the jumper pins. jp1 xp/br-sel 4w-xp bncxp jp2 yp/tr-sel jp3 xn/tl-sel jp4 yn/bl-sel 5w-br 4w-yp bncyp 5w-tr 4w-xn bncxn 5w-tl 4w-yn bncyn 5w-bl the ak4185?s register (touch screen register) should be set to 4-wire touch screen operation. (1-2) evaluation of a/d using the analog input terminal. in case of ak4185?s a/d evaluation using the analog input terminal, it is necessary to connect the analog generator with ain terminal. as for the ak4185?s regis ter definitions, refer to datasheet of the ak4185. set up the jumper pins. jp5 ain-p bncxp in bncyp jp7 in/wiper-sel in 5w-wiper the ak4185?s register (touch screen register) should be set to 4-wire touch screen operation. 2007/11 - 4 -
[akd4185-a] (2) 5-wire touch screen position measurement. in case of evaluating a 5-wire touch screen function of the ak4185, it is necessary to connect the 5-wire touch panel with j2 terminal as shown table 3 . regarding pin assignment of j2, refer to table 3 or circuit diagram in this manual. as for the ak4185?s register definitions, refer to datasheet of the ak4185. 5-wire resistive touch panel should be connected to j2. the pin assignment of j2 is shown on table 3. no. name description 5 5w-bl 5-wire touch screen bottom-left voltage supply 4 5w-tl 5-wire touch screen top-left voltage supply 3 5w-wipe r 5-wire touch screen wiper voltage supply 2 5w-br 5-wire touch screen bottom-right voltage supply 1 5w-tr 5-wire touch screen top-right voltage supply table 3. j2 (5p header) pin assign set up the jumper pins. jp1 xp/br-sel 4w-xp bncxp jp2 yp/tr-sel jp3 xn/tl-sel jp4 yn/bl-sel 5w-br 4w-yp bncyp 5w-tr 4w-xn bncxn 5w-tl 4w-yn bncyn 5w-bl jp7 in/wiper-sel in 5w-wiper the ak4185?s register (touch screen register) should be set to 5-wire touch screen operation. 2007/11 - 5 -
[akd4185-a] other jumper pins set up [jp5] (ain-p): selection of ain-p bncxp: ain-p signal is input to xp/br. bncyp: ain-p signal is input to yp/tr. in: ain-p signal is input to in/wiper. [jp6] (ain-n): selection of ain-n bncxn: ain-n signal is input to xn/tl. bncyn: ain-n signal is input to yn/bl. [cl1] : analog ground and digital ground open: separated. short: common. (the connector ?dgnd? can be open.) 2007/11 - 6 -
[akd4185-a] indication for led [led1] (erf): monitor vdd pin for the ak4185. led turns on when ak4185 power up. serial control the akd4185 can be connected via the printer port (parallel port) of ibm-at compatible pc. connect port1 (digital i/f) with pc by 10 wire flat cable packed with the akd4185. connect csn dout din digital i/f akd4185 sclk port1 10pin connector pc penirqn 10 wire flat cable figure 3. connect of 10 wire flat cable 2007/11 - 7 -
[akd4185-a] analog input/output circuits (1) touch screen input circuits j3 4-wire touchscreen 1 2 3 4 5 6 7 8 j4 5-wire touchscreen 5 4 3 2 1 ain-n1 t45-bk 1 ain-p1 t45-gr 1 jp14 ain-p jp15 ain-n r8 0 r9 0 xp/br yp/tr xn/tl yn/bl in/wiper jp9 in/wiper-sel jp10 xp/br-sel jp11 yp/tr-sel jp12 xn/tl-sel jp13 yn/bl-sel figure 4. touch screen input circuits ? akm assumes no responsibility for the trouble when using the above circuit examples. 2007/11 - 8 -
[akd4185-a] control software manual set-up of evaluation board and control software 1. set up the akd4185 board. 2. connect ibm-at compatible pc with akd4185 by 10-lin e type flat cable (packed with akd4185). take care of the direction of 10pin header. (please install the driver in the cd-rom when this control software is used on windows 2000/xp. please refer ?installation manual of control software driver by akm device control software?. in case of windows95/98/me, this installation is not n eeded. this control software does not operate on windows nt.) 3. insert the cd-rom labeled ?ak4185 evaluation kit? into the cd-rom drive. 4. access the cd-rom drive and double-click the icon of ?akd4185.exe? to set up the control program. 5. then evaluate acco rding to the follows. explanation of main window when runs the control program, the window as shown in figure 5 opens. figure 5. control soft window 2007/11 - 9 -
[akd4185-a] 1. the setup of the ak4185?s register. [write] : write registers that is currently displayed. [read] : read registers that is currently displayed. [addr] 00h: check the box, data becomes ?h? or ?1?. if not becomes ?l? or ?0?. 00h-03h: select data from drop-down list. * as for the ak4185?s register definiti ons, refer to datasheet of the ak4185. 2. 4-wire touch screen position, pressure and temperature measurement. please set the ak4185?s register to 4-wire touch scr een operation when using 4- wire touch screen. [start]: when select ?channel selection? and click [start] button with pressing point by the status or finger. the results of measurement are displaye d at ?ad out section?. display all data on an assistant window. the parameter on the ?channel se lection? corresponds to a2-0 bits, mode bit and pd bit of the ak4185?s control command. a. select ?4w-x-axis? and ?12 bit? from drop-dow n list of ?1st measurement? and ?1st mode?. check the box of ?1st pd?. b. select ?4w-y-axis? and ?12 bit? from drop-down list of ?2nd measurement? and ?1st mode?. check the box of ?2nd pd?. c. click [start] button with touching any position on touch screen, then start the measurement. d. display mean, max, min and sigma of measurem ent results at ?ad out section?. (left: x-axis measurement results, right: y-axis measurement results) the results are displayed in decimal, and maximum value is ?4095?. display data on assistant window. line up x-axis data at first, next is y-axis. a. select ?4w-z1? and ?12 bit? from drop-down list of ?1st measurement? and ?1st mode?. check the box of ?1st pd?. b. select ?4w-z2? and ?12 bit? from drop-down list of ?2nd measurement? and ?1st mode?. check the box of ?2nd pd?. c. click [start] button with touching any position on touch screen, then start the measurement. d. display touch-pressure measurement results at ?pressure?. rtouch can be requested according to the rxplate. (bottom: x-position and y-position) the results are displayed in float. display data on assistant window. line up z1 data at first, next is z2. a. select ?4w-temp0? and ?12 bit? from drop-down list of ?1st measurement? and ?1st mode?. check the box of ?1st pd?. b. select ?4w- temp1? and ?12 bit? from drop-down list of ?2nd measurement? and ?1st mode?. check the box of ?2nd pd?. c. click [start] button, th en start the measurement. d. display temperature measurement results at ?tempera ture?. the results are displayed in float. display data on assistant window. line up temp0 data at first, next is temp1. 3. 5-wire touch screen position and temperature measurement. please set the ak4185?s register to 5-wire touch scr een operation when using 5- wire touch screen. as for the measuring method of 5-wire touch screen, re fer to the position and the temperature measurement of 4-wire touch screen. * the measurement item ?reserved? is not used, please do not select it. 2007/11 - 10 -
[akd4185-a] 4. setting of measurement mode. (4-1) external clock mode when any other item is selected from the drop-down list of ?1st measurem ent? except the item of ?internal?, it becomes the external clock mode. (4-1-1) single read write ?single? in line [00h] column f2 of the ?register setup?, it becomes the single read mode. the number of measurement can be set by ?# repetition? a nd the number of clocks of each measurement can be changed by ?clock/conversion?. (4-1-2) continuous read write ?continuous? in line [00h] column f2 of the ?register setup?, it becomes the continuous read mode. the number of measurement can be set in line [00h] column f1 of the ?register setup?. (4-2) internal clock mode when the item of ?internal? is se lected from the drop-down list of ?1 st measurement?, it becomes the internal clock mode. the setup of the internal mode is at line [01h] and [02h] of the ?register setup?. 5. drawing function. when button [drawline] is pushed, the dialog of the drawing function as shown in figure 6 is opened. figure 6. touch screen window [start] : the scanning of the touch panel begins a nd the screen is cleared when [start] being pushed again. [paint/locate] : when it sets to paint, and tracing on the touch panel, tracks are displayed on window. when it sets to locate, and tracing on the touch panel, the mouse cursor on window moves. (shortcut key: ctrl) [stop] : the draw function is stopped. [pen color] : the color of the pen is displayed on time. [close] : returns to the main dialog. 2007/11 - 11 -
[akd4185-a] ? trouble shooting 1. application error is occurred and doesn?t start up if the operating system is windows 2000/xp, please install akm port driver first. 2. mean value in ad out section does not change when click start button (cannot write control command to ak4185) please set the port address to your pc platform environment. 3. the mean, max, min value doesn't change wherever the pen pushes down on the panel. there is a possibility of the trouble of the contact of the relay connector that connects the touch panel. please open jp1, 2, 3, 4, and 7 on the evaluation board, measure panel seat resistance, and check the resistance. generally, the panel seat resistance is hundreds of ? . there is a possibility that the touch panel is not correctly connected if the value is over thousands of k ? . please connect the relay conn ector and check the resistance value again. 2007/11 - 12 -
[akd4185-a] 2007/11 - 13 - revision history date (yy/mm/dd) manual revision board revision reason page contents 07/11/02 km090700 0 first edition important notice these products and their specifications are subject to change without notice. when you consider any use or application of these produc ts, please make inquiries the sales office of asahi kasei emd corporation (akemd) or authorized distributors as to current status of the products. akemd assumes no liability for infringement of any patent, intellectual property, or other rights in the application or use of any information contained herein. any export of these products, or devices or systems containi ng them, may require an export license or other official approval under the law and regulations of the country of e xport pertaining to customs and tariffs, currency exchange, or strategic materials. akemd products are neither intended nor au thorized for use as critical components note1) in any safety, life support, or other hazard related device or system note2) , and akemd assumes no responsibility for such use, except for the use approved with the express written consent by representative director of akemd. as used here: note1) a critical component is one whose failure to func tion or perform may reasonably be expected to result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. note2) a hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fi elds, in which its failure to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property. it is the responsibility of the buyer or distributor of akemd pr oducts, who distributes, dis poses of, or otherwise places the product with a third party, to notify such third party in advance of the above cont ent and conditions, and the buyer or distributor agrees to assume any and all re sponsibility and liability for and hold akemd harmless from any and all claims arising from the use of said product in the absence of such notification.
5 5 4 4 3 3 2 2 1 1 5 5 4 4 3 3 2 2 1 1 penirqn dout din csn din sclk dout csn gnd gnd sclk vdd vdd vdd ifvdd vdd ifvdd ifvdd bncxp bncyp in bncxn bncyn 4w-xp 4w-yp 4w-xn 4w-yn in 5w-br 5w-tr 5w-tl 5w-bl bncxp bncyp bncxn bncyn 5w-wiper 4w-xp 4w-xn 4w-yp 4w-yn 5w-bl 5w-tl 5w-wiper 5w-br 5w-tr title size document number rev date: sheet of akd4185 0 akd4185-a a3 11 friday, november 02, 2007 title size document number rev date: sheet of akd4185 0 akd4185-a a3 11 friday, november 02, 2007 title size document number rev date: sheet of akd4185 0 akd4185-a a3 11 friday, november 02, 2007 dgnd agnd + c2 10u + c2 10u c10 0.1u c10 0.1u c7 0.001u c7 0.001u jp7 in/wiper-sel jp7 in/wiper-sel tp10 in/wiper tp10 in/wiper r20 47k r20 47k jp6 ain-n jp6 ain-n port1 control port port1 control port 1 2 3 4 5 6 7 8 9 10 ifvdd t45-or ifvdd t45-or 1 jp5 ain-p jp5 ain-p c6 0.001u c6 0.001u tp2 csn tp2 csn jp8 vdd jp8 vdd r1 51 r1 51 tp3 din tp3 din c5 0.001u c5 0.001u dgnd t45-bk dgnd t45-bk 1 j2 5-wire touchscreen j2 5-wire touchscreen 5 4 3 2 1 c4 0.001u c4 0.001u u1 ak4185 u1 ak4185 in/wiper a1 vdd a2 xp/br a3 penirqn b1 csn b2 yp/tr b3 dout c1 din c2 xn/tl c3 sclk d1 vss d2 yn/bl d3 r15 51 r15 51 agnd t45-bk agnd t45-bk 1 cn2 7pin_2 cn2 7pin_2 1 2 3 4 5 6 7 c8 0.1u c8 0.1u r22 47k r22 47k d1 led(red) d1 led(red) 1 2 c11 0.1u c11 0.1u c3 0.001u c3 0.001u port2 digital i/f port2 digital i/f 1 2 3 4 5 6 7 8 9 10 tp6 xp/br tp6 xp/br tp5 penirqn tp5 penirqn r6 0 r6 0 c1 0.1u c1 0.1u tp4 dout tp4 dout ain-p t45-gr ain-p t45-gr 1 j1 4-wire touchscreen j1 4-wire touchscreen 1 2 3 4 5 6 7 8 r19 47k r19 47k c9 0.1u c9 0.1u jp4 yn/bl-sel jp4 yn/bl-sel r21 47k r21 47k tp8 xn/tl tp8 xn/tl r4 51 r4 51 r3 51 r3 51 r7 0 r7 0 cn1 7pin_1 cn1 7pin_1 1 2 3 4 5 6 7 jp3 xn/tl-sel jp3 xn/tl-sel tp1 sclk tp1 sclk r14 51 r14 51 r2 51 r2 51 ain-n t45-bk ain-n t45-bk 1 u2 74avc4t245 u2 74avc4t245 1a1 4 1a2 5 2a2 7 1oe 15 1b1 13 1b2 12 2b1 11 2b2 10 gnd 9 2a1 6 1dir 2 vccb 16 vcca 1 gnd 8 2dir 3 2oe 14 r13 1k r13 1k vdd t45-red vdd t45-red 1 r16 51 r16 51 r5 51 r5 51 r18 51 r18 51 r17 51 r17 51 jp2 yp/tr-sel jp2 yp/tr-sel tp9 yn/bl tp9 yn/bl u3 74avc4t245 u3 74avc4t245 1a1 4 1a2 5 2a2 7 1oe 15 1b1 13 1b2 12 2b1 11 2b2 10 gnd 9 2a1 6 1dir 2 vccb 16 vcca 1 gnd 8 2dir 3 2oe 14 tp7 yp/tr tp7 yp/tr cl1 cut land short cl1 cut land short 1 2 jp1 xp/br-sel jp1 xp/br-sel -14-
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