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EVBQE128 evaluation board for freescale flexis qe128 microcontrollers (80-pi n lqfp) user?s manual revision 1.1 c opy r i g h t ? 2 007 so ftec m i cr osy s tems ? d c 0135 5
we wan t yo ur fe edback ! softec m i crosystem s is always on the look- out for new ways to imp r ove its products and services. for this reason feedbac k, comm ents, su ggestions or criticism s , however sm all, are always welcom e. our pol icy at so ftec mi cro s y s tems i s to co mp ly w i th all ap plicable w o rldw ide safe ty and emc/emi regula t io ns. our pro ducts ar e ce rti f ied to compl y to the eur opean new approach dire ctiv e s an d the ce mar k is a pplied on all o u r produ cts. this pr oduct as shi pped from the fa cto r y has been v e rified to mee t w i th r equir e ments fcc as a class a produ ct. this pr oduct is de si gned and in tended for use a s a dev elopment p l atform for hardw are or softw a re in an e ducational or pro f essio nal labor atory . in a dome s tic env ironment, thi s pro d u c t may ca u s e r adio inter f eren ce in w h ich ca se the user may be requir ed to take ad equate prev ention me asures. atta chin g ad ditio nal w i ring to th is produ ct or modify ing the product opera t ion fr om the factory defa u lt a s shipped may effe ct its pe rf orma nce and cau s e in ter f eren ce w i th other apparatu s in the im mediate v i cinity . if such inte rfer ence i s dete c ted , sui t abl e mitigati ng measure s shoul d b e ta ken . s o fte c mi c r o s y s te m s e- mai l ( g ener al i n for m a ti on) : i n fo @so f t e cmi c r o .com e- mai l ( t ec hni cal s upp or t) : sup por t@s o f t ecmi cr o.com w e b : ht tp:/ /www .sof tec m icr o .co m important so ft ec m i cr osy s tems r e ser v es the r i g h t t o ma ke i m pr ov emen ts to thi s pr oduc t, i t s doc u m e n t ati o n an d so ftw ar e r o u t i n es, w i thout noti c e. i n f o r m a t i on i n thi s man ual i s i n tend ed to be accur a t e and r e l i a bl e. h o w e v e r , so ft ec m i cr osy s tems assum e s n o responsibility for its us e; n o r f o r a n y in f r ing e m en ts o f rig h ts o f t h ird parti es w h ich may result f r om its use . softec m i c r o sy st em s w i l l n o t be l i abl e for d a m a ge s r esu l t in g fr om loss of d a t a , pr o f it s , u se of product s, or i ncident al or con sequen t ia l dama ges, even if advis e d of t h e po ssi bil i t y t h er eof. trademar ks so ft ec m i cr osy s tems ? and th e s o ft ec m i cr osy s tems l o g o ar e tr ad emar ks o f so ft ec m i cr osy s tems s. p.a . fr eescal e ? and th e fr eescal e l o g o ar e tr ade m ar ks o f fr eesc a l e s e mi con duct o r , inc . m i cr osof t an d w i nd ow s ar e tr a d e m ar ks or r e g i ster ed tr ad em ar ks o f m i cr osof t c o r por a t i o n. pc i s a r e g i ster ed tr ad emar k o f i n ter nati o nal busi ness m a chi n es c o r por ati o n . other pr oduc ts a nd c o mpa n y na mes l i s te d ar e tr ad em ar ks or tr a de nam es o f t hei r r e spec ti v e compa n i e s.
EVBQE128 user's manual contents 1 introduction 5 1.1 ov erv i e w 5 1.2 package content s 5 1.3 supported devices 5 1.4 recommended reading 5 2 hardw a re features 7 2.1 evaluation board featur es 7 2.2 microdart inte r f ace 8 2.2.1 hot plug-in 9 3 softw a re setup 11 3.1 overvie w 11 3.2 host s y stem re quirements 11 3.3 installing codewarrior d e velopme n t studio 11 4 hard w a re setup 13 4.1 first connection 13 5 operating modes 17 5.1 overvie w 17 5.2 standalone mod e 17 5.3 host mode 18 6 application tutorial 19 6.1 overvie w 19 6.2 mc9s08qe 128 step-b y -step tut o rial 19 6.3 converting the e x ample for the m c f51 q e128 20 6.4 additional examples 21 7 hot plug-in 23 7.1 overvie w 23 7.2 ho w to enable h o t plug-in 23 8 jumper and connect or settings 25 8.1 jumpers 25 8.2 connectors 28 page 3
contents 9 troubleshooting 31 9.1 usb driver probl ems 31 9.2 communication problems bet w e en the pc and th e demo boa r d 3 1 9.3 problems w i th r s -232 comm unication 31 page 4
EVBQE128 user's manual 1 introduction 1.1 overview the evbqe1 28 evaluation board has been design ed for the evaluation, demonstrati on and debugging of the freescale flexis qe128 microco n trollers (mc9s0 8qe128 a nd mcf51 q e128 ). the evbqe1 28 can be used as a standalone applicati on or can be controlled b y a h o st pc via its built-in microdart ? interfa c e. 1.2 packag e contents the evbqe1 28 package includes the follow i ng ite m s: the evbqe1 28 evaluation board; 80-pin l q fp mc 9s08qe128 and mcf51 q e128 m i crocontrollers; a usb cable; a pick-up vacuum pump; a universal, 12 v dc po w e r suppl y; s y stem soft w a re dvd-r o m, including codewar rior? development studio; a quick start gu ide sheet. 1.3 supported devices the evbqe1 28 evaluation board s upports the follow i ng devices: mc9s08qe 128; mcf51 q e128; and an y ot her pi n-to-pin compati b le devices. 1.4 recommended read ing freescale microcontroller-specific datasheets and a pplication notes; EVBQE128 sche matic. page 5

EVBQE128 user's manual 2 hardware features 2.1 evaluation board features the evbqe1 28 board feat ures: 1. an ?mcu ? section containing: an 80-pin l q fp socket accepting either the mc9s 08qe128 or the mcf51 q e128 microcontroller; a cry s tal oscillat o r, a provision for a cl ock module, a provision for a connector for providing an exte rnal clock source , toget her w i th jumpers to select the clock source; a bdm connector for in-circuit de bugging/prog ram m ing w i th an ext e rnal instrument; a female header connectors w i th all of the mcu signals. 2. a po w e r suppl y section containing: a 12 v dc ba rrel input connector (2.1 mm); a four- w a y micro terminal block for pr oviding specific pow er supplies and voltage references to th e microcontroller; a jumper to select the po w e r sup p ly sou r ce (usb bus or bar rel connector); a po w e r on/ off sw itch. 3. a built-in ?microdart inte rfac e? sect ion ( w ith the main circuitr y mounted on th e back of the boar d) w h ich allow s t he host pc to co mmunicate w i th t he microcontroller through a stan da rd usb interface. jumpers are p r e s ent to configure this module. thanks to the mi crodart in-circu it debugging firm w a re, bdm com m ands are sent t o the target microc ontroller thro ugh the usb bus. ad ditionally , a virtu a l com po rt is automatically av ailable over the same usb conne ction. this virtual com po rt can b e used b y standa rd terminal prog ra ms, like hy pe rte r minal, to send/r e ceive serial characters to/fro m the target microcontroller. 4. an ?i/o? section containing: a reset push-bu tton; four ad ditional push-button; one pot entiomet e r; eight dip-sw itche s ; page 7
hard w a re f eatur es a piezoelectric b u zzer; a light sensor; a temperatu r e se nsor; ten user le ds; a circuitry fo r dri v ing and exte rnal lcd; a series of jumpers to connect/disc onnect the abo ve controls to/fro m the microcontroller. 5. an ?rs-23 2? sect ion containing two rs-232 conn e c tors together w i t h a jumper to e n able the rs-232 com m unication. 6. a ?serial sett i ngs? section co ntaining jumpers to select communication options. 7. a protot ype ar ea. 1 2 3 4 5 6 7 the evbq e128 evaluation boa r d 2.2 microdart interface thanks to the mi crodart in-circu it debuggi ng firm w a re, c odewar rior can send bd m commands to the target microcont roller throug h the usb bus. page 8
EVBQE128 user's manual additionally , w h e n y ou plug t he u sb cable into t he pc, a ?virtual? c o m po rt is automatically created and, th ro ugh this port, seri al data can be tr ansferred to /from the target micro c ontroller. in other words, a terminal application such as hype rterminal is able to use the virtual com port as if it w e re a normal c o m p o rt and send a n d receive characters normall y . this serial communication and bdm communica tion work simultaneously : codewar rior can be used to w o rk w i t h the targe t microcontro ller w h ile h y pe rte r minal sends and receives characters. 2.2.1 hot pl ug-in the ?h ot plug-in ? feature gives y o u the possibility t o connect to a ta rget microcontroller that is running an ap plication and to trac e and debug the current r unning code w i thout the n eed of a complete erase a nd re-p rog r am of the flash memor y . page 9

EVBQE128 user's manual 3 software setup 3.1 overview before connectin g the evaluation board to the p c , it is recommended that y o u install codewarrior first , so that t he app ropriate usb driv er w ill be automa t ically found b y window s w h en you conne ct the evaluation board. 3.2 host system requirements the evaluation board is controlled b y cod e warrio r development stu d io. the follo w i ng hard w a r e and so ftware a r e re quir ed to run t he co dewarrior use r interface togethe r w i th the evaluation board: a 200-mhz (o r hi gher) p c compat ible sy stem ru nning windo w s 200 0 or windo w s xp ; 128 mb of available sy stem ram plus 1 gb of available hard disk space; a usb port; dvd- ro m dr ive for installation. 3.3 installing codewarri or development studio to install the codewarrior development studio, i n sert the cod e warrior dv d-r o m into y our computer?s dvd-ro m d r ive. a startup w i ndo w w ill automatically ap pear. follow th e on-screen instr u ctions. page 11

EVBQE128 user's manual 4 hardware setup 4.1 first connection the evaluation board is connected to a hos t pc th rough a usb por t. connection ste p s are listed below in th e recommended flow o r der: 1. install all the required s y stem soft w a re as describe d in the previous section. 2. power the b oard through eithe r th e barrel connect o r or th e usb co nnector, making sure that the ?p owe r sel? jumper s e lects the correct po w e r sou r ce. 3. make sur e the ?o n-of f ? s w itch is in the ? o n? position. t he ? p o w er? led w ill tur n on. 4. insert one end of the usb cable into a free usb p o rt of the pc . 5. insert the othe r e nd of the usb ca ble into the usb connector on the evaluation board. 6. the first time the evaluation board is connected to the pc, windo ws recognizes the instrument and st arts t w o separa t e ? foun d ne w h a rd w a re w i z a rd ? procedures: on e for the main usb driver and one f o r the usb virtua l com por t driver . 7. the first ?found ne w hard w a re wizard? pr ocedur e asks y ou to specify the usb dr i v er to use for the inst rument. o n wind ow s xp (sp2 ) th e follow i ng dialog box w ill appear. select the ? n o, not this tim e ? option and click th e ?next >? butto n. 8. the follo w i ng dia l og box w ill appe ar. page 13
hard w a re setup click the ?next >? button. 9. window s w ill install the driver files to y o u r s y stem. at the end of the installation, the follow i ng dialog b o x w ill appear. click the ?finish ? button to exit f r om the ?found ne w hard w a re wizard? procedu re. 10. the evaluation board?s main usb driver is now ins t alled on y our s y stem. 11. the second ? f o und ne w hard w a re w i z a rd? pro c edure asks y ou to specify th e us b virtual co m driv er to use. o n windo w s xp (sp2) the follow i ng dial og box w ill appe ar. page 14
EVBQE128 user's manual select the ? n o, not this tim e ? option and click th e ?next >? butto n. 12. the follo w i ng dia l og box w ill appe ar. click the ?next >? button. 13. depending on yo ur windo w s settings, the follow i n g warning ma y a ppear. page 15
hard w a re setup i note : this warnin g is related to the fact that the us b driver used by the evaluation board is not di gitally signed by m i crosoft, and w i ndows consid ers it to be poten ti ally m a lfunctioning or dan gerous for the system . h o wever, you can safely ignore the warning, since every kind of com patibility/securit y test has been carried out by soft ec m i cr osystem s. click the ? c onti nue a n y w a y ? b u tton. 14. window s w ill install the driver files to y o u r s y stem. at the end of the installation, the follow i ng dialog b o x w ill appear. click the ?finish ? button to exit f r om the ?found ne w hard w a re wizard? procedu re. 15. the evaluation board?s usb virtual com driver is no w installed on your s y st em. page 16
EVBQE128 user's manual 5 operating modes 5.1 overview the evaluation board can w o rk in tw o m odes: ?stan dalone? mode an d ?host? mod e . 5.2 standalone mode in standalone mo de, no pc conne ction is requi red. both microcontro llers are factor y program med w i t h the same samp le application. to run t he built-in example: 1. power off th e bo ard. 2. put either the m c 9s08qe1 28 or mcf51 q e128 m i crocontroller in the socket. 3. ensure that all of the jumpers in th e ?i/o? sections are inserted. 4. power on th e bo ard. 5. pr ess the "pt d 4" push- button. t h e value of the adp0/pt a 0 potenti o meter w ill be display ed on the pte[7..0] leds. 6. pr ess the "pt d 5" push- button. t h e value of the light sensor w ill be display ed on the pte[7..0] leds. 7. press the "ptd6 " push-butto n. th e adp0/pta0 po tentiometer w ill vary th e freq uenc y of the sound pla y e d b y the b u zzer. 8. pr ess the "pt d 7" push- button. t h e value of the temper atur e sensor w ill be display e d on the pte[7..0] le ds. the output of the potentiometer, li ght sensor and t e mperatu r e sensor is also sent to the host pc (if connected ) throug h the virt ual com po rt ov er the usb conn ection. to see th e data sent to the virtual com port, do th e follow i ng: 1. ensure that the j 206 jumpers ( ? c o m1 ena ?) sele ct the ?mdi? position; 2. connect the boa r d to the pc th rou gh the usb conn ection; 3. star t y o ur ter m inal utility ( e .g. hy per t er minal) w i th these par ameters: baud rate: 9 600 data bits: 8 parit y : non e stop bits: 1 flow control: no ne page 17
oper ating modes 5.3 host mode in host mode the progra m execution is controll ed by the host pc t h r ough the ? u sb? c onnector. y ou can use th e pc to debug th e application by , f o r exam ple, execu t ing the prog ram step b y step and w a tchin g ho w the microc ontroller regi ster s var y , using the provided codew arrior development stu d io. i note : the m c 9s 08qe128 and mcf51 q e128 devi c es contain a sin g le- wire background debug interface which supports in-circuit progra m m i ng of on-chip non-volat ile m e m o ry. this syst em does not interfere with n o rm al application resources. it does not use any user me m o ry or locations in the m e m o ry m ap. t h e background d ebug m odule ( a lso known as background deb ug contr o ller, bd c) uses a single-wire communication interface (via the bkgd line) to al l o w non-int r usive access to target system me m o ry and registers. to w o rk in host mode (using the built-in microdart interface ) : make sure that t he board is po w e red on; make sure that t he ?reset? and ?bkgd ? jumpers in the ?microdar t inter f ace? section are inserted; connect the host pc to the boa rd through th e provi ded usb cable. page 18
EVBQE128 user's manual 6 application tutorial 6.1 overview mc9s08qe 128 and mcf5 1qe1 28 devices share the same periph e rals and registe r s. software written for one device can be easily reco mpiled for the ot her. this section w ill provide a step-b y -step guide on h o w to launch a m c 9s08q e1 28-ba sed project and get st arted w i th the co dewarrior us e r interface. late r , th e same project will be converted for th e mcf51 q e128 d e vice. 6.2 mc9s08q e128 step- b y - step t u torial the sample application is the sam e as the one des cribed in the ?sta ndalone m ode ? s e ction above. 1. make sure that t he mc9s08 qe1 28 device is present in the socket. 2. set up the boa rd so that it w o rks in host mode (se e ?host mode ? a bove). 3. ensure that the evaluation board is connec ted to the pc (via the u sb cable) and th at the board is po wered on. 4. start codewa rri or b y selecting it in the window s start menu. 5. from the codew arrior main me nu , choose ?file > ope n ? and choo se the ? \ progra m files\fre escale\ [co d ewarrior f o lder]\ (c odewa rrior exampl es)\ hcs08\e v al uati on board exa m p l e s \EVBQE128\ c\ demo\ d em o.m c p? . 6. click ? o pen? . the project w i ndo w w ill open. 7. the code of this example is contained in the ?mai n.c? file. double click on it to open. 8. from the main m enu, choose ? p roject > d e bu g? . this w ill compile the source code, generate an e x e c utable file and download it to the evaluation board. 9. a ne w debug ger environment w ill open. from the main menu, choo se ? r un > start/c onti nue? . t he progr am w ill be ex ecuted in real- t ime. 10. from the main m enu, choose ?ru n > halt? . the progr am ex ecution w ill stop. t he nex t instruction to be executed is highlighted in the sou r ce w i ndo w. 11. from the main m enu, choose ?ru n > single s t ep ? . the instruction highlighted in the source w i ndo w w ill be executed, and the program ex ecution w ill be stopped immediately after. 12. from the main m enu, choose ?r un > st a r t / co nt i n u e ? . t he application w ill r e star t from w h ere it w a s p r e v iously stopped. congratulations ! y ou h a ve successfully comp leted this tutorial ! y ou can continue to expe riment w i th t he codewar rior user interface an d discover b y y o urself its potentialities. for page 19
application tutorial an in-depth g u ide of all of the user interface featu r es, select ? h elp > codew a rrior help? from codewar rior de velopment studio?s main menu. 6.3 converting the example for the mcf51qe128 the same e x am ple illustrated above can be easily converted to work w i th the mc f51q e128 device. 1. open th e project you w a nt to conv ert. in this case, from the co dewa rrior main men u , choose ?file > open? and choos e the ?\progra m files\fre escale\ [co d ewarrior fold e r]\( cod e w a rrior exam ples )\hcs08\e v a l ua t i on b o ard example s \evb qe128\c\ dem o \ d emo. mc p? . 2. in the project pa ne, click the ? c h a nge m cu/c o n n ecti on? button (see belo w ). the follo w i ng dia l og box w ill appe ar. page 20
EVBQE128 user's manual 3. in the tree on the left, choose the mcf51 q e128 d e vice and, on the connections list, choose ? s oftec cold fire? . click the ?finis h? butt on. project conversion is done and the ne w p r oject is read y to be co mpiled. a similar procedure ma y be used to conver t a mc f51qe 128 pr oject into a mc9s08 qe128 project. 6.4 additional examples t w o additional e x amples are p r ov ided: demo lcd. sho w s ho w to drive t he optional 16x2 lcd controller. a string is shifted f r om right to left on th e first lcd ro w. an y lc d based on the hd4 4780 u (lcd -ii) cont ro ller is correctl y driven. make sure to co mment/uncomm ent the app ropria te dela y line in th e delay.c file depending on w h ic h device y o u are w o rking w i th. microdart d em o . sho w s ho w to c o mmunicate w i th the target micro c ontroller throug h the microdart i n terface. page 21

EVBQE128 user's manual 7 hot plug-in 7.1 overview the ?h ot plug-in ? feature gives y o u the possibility t o connect to a ta rget microcontroller that is running an ap plication and to trac e and debug the current r unning code w i thout the n eed of a complete erase a nd re-p rog r am of the flash memor y . 7.2 how to enable hot plug-in while the target application is running: 1. launch codewa rrior. 2. open th e targe t application project. 3. start a debu gging session ( ? p roject > de bug? ). the follo w i ng dia l og box w ill appe ar. make sur e that the ? h ot plu g -in? connection mode is selected, then click the ? c onne ct? butto n. 4. the follo w i ng dia l og box w ill appe ar. page 23
hot plug-in click ?cancel? . 5. the follo w i ng dia l og box w ill appe ar. click ?yes? . y o u w ill enter th e de bugging environ ment. 6. after issuing an halt command ( ? r un > h a lt? ), th e program count er and all of the other registers are upd ated w i th the act ual microcontroller values. page 24
EVBQE128 user's manual 8 jumper and connector settings 8.1 jumpers n a m e r e f e r e n c e descr i p t i on/ p i nout j103 2 4 1 3 6 5 8 7 10 9 12 11 ptb6/ptb7 mode selection 1-3, 2-4 (? a lt. function?): pt b6 and ptb7 lines are used either as i 2 c lines (must be enabled v i a soft ware) or as user i/os (def ault) 5-7, 6-8 (?cry stal?): ptb6 and ptb7 lin es a r e conne cted to the y 101 cry s tal oscillator 9-11, 10-12 (?e x t osc?): ptb6 and ptb7 lin es a r e conne cted to the u 102 ex ternal oscillator ( ? e x t os c1?) j202 1 2 3 power selection 1-2 (?usb ?): pow e r supply is ta ken from the us b b u s 2-3 ( ? 12v ? ) : po w e r suppl y i s t aken fr om the barr el connector (def ault) j204 2 4 1 3 6 5 8 7 lcd en a b le installed: connects the spi2 functi on of the mi c r ocontr o ll er to the lcd dri v i ng circu i tr y (default) not installe d: the sp i2 fun c ti on of the micr ocon troll e r i s not conn ected to th e lcd driv ing circui try j205 1 2 3 com en a b le 1-2 ( ? on=1?): enables the rs-23 2 transceiv e r ( a nded w i th ptg0) (default) 2-3 (? off?): rs-232 tran sce iv er disabled j206 2 4 1 3 6 5 m d i/ com 1 selecti o n 1-3, 2-4 (?m d i ? ): txd1 and rxd1 s i gnal s of the mi c r ocontr o ll er a r e r outed to the mic r oda r t interf ace (defau lt) 3-5, 4-6 (?com1?) : tx d1 a nd r x d1 si gnals of the micro c ontr o ller are routed to the rs-23 2 tran sce iv er page 25
jumper and c o n nector settings n a m e r e f e r e n c e descr i p t i on/ p i nout j207 2 4 1 3 com 2 en a b le i n stall e d: txd2 and rxd2 s i gnal s of the mic r ocontroller a r e routed to the rs -232 transce iv er (defau lt) not installe d: tx d2 a nd r x d2 si gnals of the micro c ontr o ller are not routed to the r s - 232 tran sceiv er j301 1 led en a b le installed: the ?ptex ? leds are connected to t h e pte[7.. 0 ] ports of the micr ocontr o l l e r (default) not installe d: the ?ptex ? leds a r e no t conne cted to the micro c ontr o ller j302 1 user1 ena b le installed: connects the i ndicated mi cr ocontr o l l e r sig n a ls to th e re la tiv e i/o dev i ce (de f ault) not installe d: the indi cate d mi cro c ontroller signal is not conne cted to any i/o dev ice j303 2 4 1 3 iic 1 pu l l - u p en a b le installed: enables 10k ohm pul l - up resi s t or s on sd a 1 and scl1 signal s of the mic r ocontroller (d efault) not installe d: disable s 10 kohm pull-up resi stor s on sda1 and scl1 si gnals of the micro c ontr o ller j304 2 4 1 3 iic 2 pu l l - u p en a b le installed: enables 10k ohm pul l - up resi s t or s on sd a 2 and scl2 signal s of the mic r ocontroller (d efault) not installe d: disable s 10 kohm pull-up resi stor s on sda2 and scl2 si gnals of the micro c ontr o ller j305 1 user2 ena b le installed: connects the i ndicated mi cr ocontr o l l e r si gnal to the r e l a tiv e push-button (default) not installe d: the indi cate d mi cro c ontroller signal is not conne cted to a pu sh-button page 26
EVBQE128 user's manual n a m e r e f e r e n c e descr i p t i on/ p i nout j402 2 4 1 3 usb to bd m en a b le a ll in stall e d : t h e mic r o d a r t in terface is en ab led (default) not installe d: the microdart i n terfa c e i s di sabled page 27
jumper and c o n nector settings 8.2 connector s n a m e r e f e r e n c e descr i p t i on/ p i nout j101 12 3 5 4 6 79 80 78 77 78 mcu pin repli c a t ion j102 12 3 5 4 6 bdm connector 1. bkgd 2. gnd 3. n. c. 4. reset 5. n. c. 6. 3v j201 2 1 12 v dc po w e r su ppl y i nput con n ector (ba r r e l, 2 . 1 mm) 1. 12 v dc 2. gnd j203 1 2 3 4 m cu power connector 1. mcu_vdd 2. mcu_vss 3. mcu_vdda 4. mcu_vssa j208 12 3 5 4 6 78 91 0 11 12 13 14 lcd connector 1. gnd 2. 5v 3. contrast 4. rs 5. gnd 6. en 7. gnd 8. gnd 9. gnd 10. gnd 11. db4 12. db5 13. db6 14. db7 page 28
EVBQE128 user's manual n a m e r e f e r e n c e descr i p t i on/ p i nout j209 6 9 5 1 rs-232_1 conne ctor 1. connected to pin s 4, 6 2. tx 3. rx 4. connected to pin s 1, 6 5. gnd 6. connected to pin s 1, 4 7. n. c. 8. n. c. 9. n. c. j210 6 9 5 1 rs-232_2 conne ctor 1. connected to pin s 4, 6 2. tx 3. rx 4. connected to pin s 1, 6 5. gnd 6. connected to pin s 1, 4 7. n. c. 8. n. c. 9. n. c. j401 usb conne ctor 1. 5 v dc usb b u s p o w e r supply line 2. usb d- 3. usb d+ 4. gnd page 29

EVBQE128 user's manual 9 troubleshooting 9.1 usb driver problems if y ou connected the evaluation board to the pc b e fore installing codewarrior, the evaluation board?s usb drivers ma y no t have been correct l y in stalled on your s y st em. unpluggi ng and replugging the u sb cable is of no use, since wind ow s has ma rked the devices as ?disabled?. as a consequence, the pc cannot communi cate w i th the evaluation board. to restor e/upgr a de the usb drive r s (provided co d e warrior has be e n installed), perfo rm the follow i ng steps u nder windo w s x p : 1. connect the evaluation board to t he pc. 2. open th e cont rol panel ( start > s e ttin g s > c o n t rol panel ). 3. open th e ?s y s tem ? options. 4. select the ?hardw a r e? tab. 5. click the ?dev ice man a ger? butt on. 6. t w o ?evbqe 12 8? devices w ill b e shown w i th an ex clamation mark nex t to it. 7. for each device, double click on it and, in the ?ge n eral? tab, click th e ?reinsta ll dri v er? butt on. f o llow the o n -scre en instructions. 9.2 communication problems betw een the pc and the demo boa r d 1. make sure that t he ?bkgd? and ?reset? jumpers in the ?usb? sec t ion are inserted. 2. make sure that t he microcontroller is powered: make sure that t he ?on- of f? s w i t ch in the ? p o w er supply ? section selects the ?on ? position; make sure that t he ?power sel ? jumper in the ?p ower? section selects the approp riate po wer suppl y source. 9.3 problems w i th rs-232 communication the jumper j20 5 allow s the user to control the sta t e of the rs- 232 transceiver: whe n the position 1-2 (? on ?, default position) is select ed, the rs-232 t r ansceiver is enabled ( w it h the aid of an ext e rnal pull-up), but th e user has the opt i on to turn t he tra n sceiver off (on) b y driving the ptg0 line of the microcontroller lo w (high ) . when the position 2-3 ( ? off ?) is selected, the rs- 232 transceiver is pow e r ed off via page 31
EVBQE128 user's manual hard w a r e, w i thou t the need of an y microcontrolle r action, in order to minimize the pow e r consumption of the board. in order to comm unicate via the rs-232_2 c o m p o rt, y o u must re move the ?acmp 2 -ena? and ?adp0/ac m p 1+ ena? jumpe r s. these pins ar e shared w i th oth e r i/o f unctions that can generate hard w a r e conflicts w i th the rs-232 com m unication. page 32

softec microsystems? and the softec microsystems logo are trademarks of softec microsystems s.p.a. freescale? and the freescale logo are trademarks of freescale semiconductor, inc. all other product or service names are the property of their respective owners. users manual evaluation board for freescale flexis qe128 EVBQE128

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