View RSM84510_839649.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

RSM84510 ps/2 scrolling mouse controller general description the rsm8 45 10 scr o ll in g mous e c o n t ro ller is sp eci all y desi gne d to con t rol ps/2 m ouse de vi ce. this si ngl e chip can interface three key - switches four photo-c ouples plus z-axis direct to 8042 controller . rsm84 5 1 0 ca n re cei ve com m a nd a n d ec h o st at us or dat a form at whic h ar e com p atible wit h ib m ps/2 m ode m ouse. key debouncing circuit is provided to prev ent false entry and im prove the accuracy . in t h e tra d it io nal m ouse, a great n u m b er of noises are generate d w h en the grid is parti a lly cl ose d or ope ne d. these nois e s are usua lly m i stake n for m o vem e nt signa l s by tradit io na l m ouse co ntr o ll er and th e c u rsor of th e disp lay scree n is t hus m oved freq u en tly u p a n d d o w n o r bac k a n d for t h. this w ill c onsum e a gre a t am ount o f ener gy . the r s m84510 m o use c o ntrol l er provides noise i m m unity circui ts to el im in at t h ese no ise in order t o reduce ener gy consum ption. fea t ures ? u s ing 51k ? 5% resistor for rc oscillation. ? com p atible with legacy ps/2 m ouse. ? com p atible with microsoft scrolling m ouse. ? built-in noise im m unity circuit. ? built-in current com p arator for photo-couples input. ? built-in three step dy nam i c input im pedance. ? three key - sw itches and four photo-couples inputs. ? six ty pes z direction input: 1.photo couples input.(z/1) 2.k e y - sw itches input. 3.v o lta g e-sensin g in p ut. 4.mechanical input.(z/1) 5.photo couples input.(z/4) 6.mechanical input.(z/2) ? both key - press and key -release debounce interval 12 m s . ? the sam p ling rate of m o tion detector is about 65k h z . ? low pow er dissipation. ? package type: ? pin to pin com p atible w ith RSM84510. RSM84510a p:16d ip ,photo couples input.(z/1) RSM84510d p:16d ip ,mechanical input.(z/1) RSM84510bp:16d ip ,k ey -sw itches input. rsm 84510ep:16d ip ,photo couples input.(z/4) RSM84510cp:16d ip ,v oltage-sensing input RSM84510fp:16d ip ,mechanical input.(z/2) pin assignment r s m84510a /b/c /d /e/fp *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 1 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller pin descriptions pin sy m bol i/o function 7 o p t i/o in pu t : 200kohm pull low to v ss. wh en opt is co nn ected to vdd, rsm8 45 10 will en ter test m o d e . i n test m ode, l w i l l be the o u t p u t of x 1 , w h i l e m w i ll be t h e o u t put of x 2 . t o gg li ng r key can change t h ese o u t p u t t o b e y1 , y2 , o r z1 , z2 respectively . o u t pu t : 2kh z z-axis led driving source. ? 1 ? =vdd, ? 0 ? =floating h i gh duty is about 60us. 2 16 osc.out oscr o i rc m ode oscillation with 51kohm resistor . 5 6 clk da t a i/o i/o connect to 8042 auxiliary port clk line. connect to 8042 auxiliary port da t a line. 9/10/1 1 r/m/l i three key - sw itches inputs. 200kohm resistor pull low . 12 13 14 15 x1 x2 y1 y2 i three step dy nam i c input im pedance. u s e current com p arator to m easure photo-couples ? on ? ,or ? off ? . 3 4 z1 z2 i z - a x i s i n p u t s . phot o m ode: three ste p dy nam i c inp u t i m pedanc e. c u rrent c o m p arator input. k e y m ode: 200kohm resistor pull low . 7 levels increased by ? m ? key . v o ltage m ode: 200kohm resistor pull low . 7 levels voltage com p arator . mechanical m ode: 13.2kohm resistor pull low . 8 v s s g r o u n d 1 v d d po w e r functional block diagram z- z1 vo lt ag e ke y- sw it ch z2 co mp ar at or s e n s o r de tec to r da ta cl k op t c od x1 m m e p o t c o unt er mu lt ipl ex er x2 a t e ri c y1 a o t tn o y2 o r r l m r c om mo n sta tu s s yst em c l o c k ge ner at or os cr rc os c. ou t o sc ill at io n u n c d ata i / o t h r e e ty pe s se lec to r axi s co un ter e d e b o t imi ng c o n tro ll er *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 2 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller absolute maximum ra tings param e ters sym ratings unit t e m p erature under bias t opr 0 ~ 7 0 ?? s t orage tem p erature range t str - 6 5 ~ 1 5 0 ?? input voltage v in - 0 . 3 ~ 6 . 0 v o u tput voltage v o - 0 . 3 ~ 6 . 0 v dc electrical characteristics (t a =25 ?? to 70 ?? ) parameters sym. min. ty p . max. unit op eratin g v o ltag e v d d 4 . 5 5 5 . 5 v o p e r a t i n g c u r r e n t ( n o l o a d ) iop - - 1 . 2 m a x 1 ,x 2,y 1 ,y 2,z1,z2(photo m ode) input voltage (80a ) v pi 0 . 8 - 1 . 2 v x 1 ,x 2,y 1 ,y 2,z1,z2(photo m ode) input voltage (500a ) v pi 1 . 5 - 2 . 8 v clk , d a t a postive-going threshold voltage v t + 0 . 6 v dd - 0 . 8 v dd v clk , d a t a negative-going threshold voltage v t - 0 . 2 v dd - 0 . 4 v dd v l,m,r,o p t , z1,z2(key m ode) input low voltage v a il - - 0.3 v dd v l,m,r,o p t , z1,z2(key m ode) input high voltage vaih 0.7v dd - - v l,m,r,z1,z2(key & voltage m ode) input resistor (v in=v dd ) rm i 9 2 - 3 1 0 k |? o p t input resistor (v in=v dd ) rxi 133 - 400 k |? d a t a , clk input current (pull up resistor) (v in=0v) idc 0.56 - 1 . 8 6 m a d a t a , clk low output voltage (iprl=-4m a ) vprl - - 0 . 4 v l,m,r,x1,x2,y1,y2,z1,z2,opt input leakage current (v in=0v ) iil 0 - - 1 . 0 u a *a ll voltages in above table are com p ared w ith v ss . *a ll param e ters in above table are tested under v dd =5v . *clk &d a t a output gates are open drains that connect to pull up resistors. *x 1,x 2 ,y 1,y 2 input im pedance *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 3 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller ac electrical characteristics (t a = 0 ?? to 70 ?? ) parameters sym. min. ty p . max. unit oscillating frequency ( oscr=51k |? ) f osc 3 7 . 5 - 1 0 % 3 7 . 5 3 7 . 5 + 1 0 % k h z k e y d e b o u n c e t k d - 1 2 - m s rising edge crossed width fosc=35 k h z t r 14.6 - - us falling edge crossed width fosc=35 k h z tf 14.6 - - us mouse clk a c tive tim e tm ca - 40 - us mouse clk inactive tim e tm ci - 40 - us mo u s e sam p le data fro m clk rising edge tm d c - 1 3 . 3 - u s system clk active tim e t s ca - 40 - us system clk inactive tim e t s ci - 40 - us tim e from d a t a transition to falling edge of clk t s dc - 13.3 - us tim e from rising edge of clk to d a t a transition t s cd - 26.7 - us tim e to m ouse inhibit after the 11th clk to ensure m ouse does not start another transm ission tpi 0 - 5 0 m s ps. the a c tim ings are m easured under using 35 k h z sy stem clock signal. function descriptions legacy ps/2 m ouse operating: (a ) o p erating m ode there are four operating m odes in ps/2 m ouse: a. reset mode: in this m ode a self-test is initiated during power- on or by a reset com m a nd. after reset signal, ps/2 m ouse will send: (a) com p letion code a a & id code 00. (b) set default : sam p ling rate: 100 reports/s non-autospeed stream m ode 2 dot/count disable b. stream mode: the m a xim u m rate of transfer is the program m e d sam p le rate. data report is transm itted if (a) sw itch is pressed (b) m ovem e nt has been detect *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 4 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller c. rem o te mode: data is transm itted only in response to a read data com m a nd. d. wrap mode: a n y by te of data sent by the sy stem , except hex ec ( reset w r ap m ode ) or hex ff ( reset ), is returned by RSM84510. b). ps/2 mouse d a ta report: i). in stream m ode: a data report is sent at the end of a sam p le interval. ii). in rem o te m ode: a data report is sent in response to read d a ta com m a nd. iii). data report form at: byte bit description 0 left button status; 1 = pressed 1 right button status; 1 = pressed 2 middle button status; 1 = pressed 3 r e s e r v e 4 x data sign; 1 = negative 5 y data sign; 1 = negative 6 x data overflow ; 1 = overflow 1 7 y data overflow ; 1 = overflow 2 0 ?? 7 x d a ta ( d0 - d7 ) 3 0 ?? 7 y d a ta ( d0 - d7 ) c) ps/2 m ouse d a ta transm ission: i). RSM84510 generates the clocking signal when sending data to and receiving data from the sy stem . ii). the sy stem requests RSM84510 receive sy stem data output by forcing the data line to an inactive level and allowing clk line to go to an active level. iii). data transm ission fram e : bit function 1 start bit ( alway s 0 ) 2 ?? 9 data b its ( d0 - d7 ) 10 parity bit ( odd parity ) 1 1 stop bit ( alw a y s 1 ) iv). d a ta o u tput ( data from RSM84510 to sy stem ): if clk is low ( inhibit status ) , data is no transm ission. if clk is high and data is low ( request-t o-send ), dat a is upda ted. da ta is r ecei ve d fro m the sy stem and n o transm ission are start e d by rsm84 5 1 0 u n ti l clk an d d a t a both h i gh . if clk a nd d a t a are both high, the transm ission is ready . d a t a is valid prior to the falling edge of clk and *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 5 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller bey o n d t h e r i sing ed ge of clk . d u rin g tra n sm ission, rsm 8 4 5 1 0 c h ec k for l i ne co nte n t i o n by chec ki ng for an ina c ti ve le vel o n clk a t i n ter v als n o t to e x cee d 10 0u s ec. co nt e n ti on oc curs w h en t h e syst em l o wers clk to i n hi bi t rsm84 5 1 0 ou tp u t aft e r rsm8 45 10 h a s st arted a t r an sm i ssi o n . if this oc curs be fore th e risi n g ed ge of t h e t e nt h c l oc k, r s m84 5 1 0 i n t e rnal s t ore its data i n i t s b u f f er and ret u rns d a ta and cl k to an ac tiv e le vel. if t h e c ont en tio n do e s no t occ u r b y the te nt h c l ock , the tra n sm ission is c o m p let e .foll o w i n g a tra n sm ission, t h e sy stem inhi bi ts rs m8 45 10 by ho ld i n g clk low unti l i t c a n servic e t h e input or unt il the syste m receives a request to se nd a res p onse fro m RSM84510. v). d a ta input ( from sy stem to RSM84510 ): sy ste m first chec k if rsm8 45 10 is tra n s m itting da t a . if rsm84 5 1 0 is transm itting , the sy stem c a n overri de the out pu t forc in g clk to a n i n ac ti ve le vel pri o r t o the te nt h c l o c k. if rsm8 45 10 transm ission i s beyond t h e t e nt h clock, the system receives the dat a . if rsm8 4510 i s not transm itting or if the sy ste m choose to o v erride the ou tpu t , t h e sy ste m force clk to an ina c t i ve leve l for a per i od of no t l e ss t h a n 1 0 0 | s ec w h il e pre p ari n g for output. w h en the sy ste m is ready to out pu t st art b i t (0), it a l l o w s clk go t o a c ti ve l e vel . if req u es t-to-sen d is d e tect ed, rsm 8 45 10 cl ocks 1 1 b its. fol l ow ing the t e nt h cl oc k rsm8 45 10 chec ks for an acti v e l e ve l o n the data line, a n d if fo u nd, forc e da ta low , a n d cl oc k o n ce m o re. if occ u rs fram i ng error, rsm 8 4 5 1 0 c ont in u e to cl oc k u n ti l d a t a is hi g h , the n c l oc ks t h e li ne co ntro l bit an d re ques t a r e se nd. when th e sy ste m sends o u t a com m a nd or data transm ission t h at re qu ires a respons e, t h e sy stem w a its for rsm8 45 10 to resp ons e b e fore sen d i ng its next output. d ) . ps/2 mouse error h a ndling: i). a resend com m a nd ( fe ) following receipt of an i nvalid input or any input with incorrect parity . ii). if two invalid input are received in succession, an error code of hex fc send to the sy stem . iii). the counter accum u lators are cleared after receiving any com m a nd except ? r esend?. iv). RSM84510 receives a resend com m a nd ( fe ), it transm it its last packet of data. v). in the stre a m m ode ? r esend? is rece i v ed by rs m8 45 10 fol l ow i n g a 3-by t e da t a pac k et trans m ission to the sy stem . RSM84510 resend the 3-by te data packet prior to clearing the counter. vi). a response is sent w ithin 25 m s if a). the sy stem requires a response b). an error is detected in the transm ission vii). when a com m a nd requiring a response is issued by the sy stem ,another com m a nd should not be *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 6 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller issue until either the response is received or 25m s has passed. e). ps/2 mouse com m a nds d e scription: there are 16 val i d com m a nds t h a t tra n sm its betwee n the system and rs m84510. the ? f a? code is alway s the first respo n se to any va li d i n put rece ive d f r o m the sy ste m other th an a set wrap mod e or resend com m a nd. the following table list the com m a nds: hex code c o m m a n d r s m84510 echo code f f r e s e t f a ? aa ? 00 f e r e s e n d x x ? ? xx ? xx ? f 6 set default f a f 5 d i s a b l e f a f 4 e n a b l e f a f 3 , x x set sam p ling rate f a ? fa f 2 read device t y pe f a ? 00 f 0 set rem o te mode f a e e set w r ap mode f a e c r e s e t w a r p m o d e f a e b read data f a ? xx ? xx ? xx e a set s t ream mode f a e 9 s t atus request f a ? xx ? xx ? xx e 8 , x x set resolution f a ? fa e 7 s e t a u t o s p e e d f a e 6 r e s e t a u t o s p e e d f a the follow i ng describes valid com m a nds: a). reset ( ff ) RSM84510 operation: i). com p letion the reset. ii). transm itted fa,aa,00 to the sy stem . iii). set default: sam p ling rate: 100 reports/s non-autospeed stream m ode 2 dots/count disable b). resend ( fe ) i). any tim e RSM84510 receives an invalid com m a nd, it returns a resend com m a nd to the sy stem . ii). when RSM84510 receives a resend com m a nd, it retransm its its last packet of data. if the last packet *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 7 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller was a resend com m a nd, it transm its the packet just prior to the resend com m a nd. iii). in stream m ode, if a resend com m a nd is receive d by RSM84510 im m e diately following a 3-by te data packet transm ission to the system . c). set default ( f6 ) the com m a nd reinitializes all conditions to the power-on defaults. d). d i sable ( f5 ) this com m a nd is used in the stream m ode to stop transm issions from RSM84510. e). enable ( f4 ) begins transm issions, if in stream m ode. f). set sam p ling rate ( f3,xx ) in the stream m ode, this com m a nd sets the sam p ling rate to the value indicated by by te hex xx, show n in follow i ng: second byte x x sample rate 0a 10/sec 14 20/sec 28 40/sec 3c 60/sec 50 80/sec 64 100/sec c8 200/sec g). read device type ( f2 ) RSM84510 alw a y s echoes ? fa ,00 ? follow i ng this com m a nd. h). set rem o te mode ( f0 ) d a ta value are reported only in response to a read d a ta com m a nd. i). set wrap mode ( ee ) wrap m ode rem a ins until reset ( ff ) or reset wrap mode( ec ) is received. j). reset wrap mode ( ec ) RSM84510 returns to the previous m ode of operation after receiving this com m a nd. k). read data ( eb ) this c o mm an d is e x ec ute d i n ei ther rem o te or stream mode . th e da ta is transm itted eve n if t h ere h a s bee n no m ovem e nt since the last report or the button status is unchanged. follow i ng a read d a ta com m a nd, the registers are cleared after a data transm ission. *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 8 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller l). set stream mode ( ea ) this com m a nd sets RSM84510 in stream m ode. m ) . status request ( e9 ) when this com m a nd is issued by the sy stem , rsm 84510 respond w ith a 3-by te status report as follow s : byte bit description 0 1 = right button pressed 1 1 = middle button pressed 2 1 = left button pressed 3 r e s e r v e d 4 0 = norm al speed ? 1=autospeed 5 0 = d i sable ? 1=enable 6 0 = stream m ode, 1 = rem o te m ode 1 7 r e s e r v e d 2 0 ?? 7 current resolution setting ( d0 - d7 ) 3 0 ?? 7 current sam p ling rate ( d0 - d7 ) n). set resolution ( e8,xx ) RSM84510 provides four resolutions selected by the second by te of this com m a nd as follow s : second byte x x reso lutio n 00 8 dot/count 01 4 dot/count 02 2 dot/count 03 1 dot/count o). set autospeed ( e7 ) a t the end of a sam p le interval in the stream m ode, the current x and y data values are converted new values. the sign bits are not involved in this conve rsion. the conversion is only in stream m ode. the relationship betw een the input and output count follow s : input o uput 0 0 1 1 2 1 3 3 4 6 5 9 n( ?y 6) 2.0*n *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 9 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller p). reset autospeed ( e6 ) this com m a nd restore norm a l speed. microsoft ps/2 scrolling m ouse m ode: (a) entering procedure: except in wrap m ode , while RSM84510 received the following consecutive c o mma n d . i. f3 c8 ---- set sam p ling rate 200/sec ii. f3 64 ---- set sam p ling rate 100/sec iii. f3 50 ---- set sam p ling rate 80/sec (b) operating: a. all of the com m a nds in legacy m ode still be valid. b. the id code of read device ty pe com m a nd (f2) will changed fro m "00" to be "03". c. data report will be four by tes form at: byte bit description 0 left button status; 1 = pressed 1 right button status; 1 = pressed 2 middle button status; 1 = pressed 3 r e s e r v e 4 x data sign; 1 = negative 5 y data sign; 1 = negative 6 x data overflow ; 1 = overflow 1 7 y data overflow ; 1 = overflow 2 0 ?? 7 x d a ta ( d0 - d7 ) 3 0 ?? 7 y d a ta ( d0 - d7 ) 4 0 ?? 7 z data ( d0 - d7 ) (c) exiting microsoft scrolling m ode: there are two way s to exit: a. power off. b. reset com m a nd (ff). z-axis input function : the z0-z7 lim it value is 7 (a) photo couples input : z-axis counter accum u lates the z1, z2 phase changed by m ovem e nt. this m ode includes *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 10 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller noise im m unity . z/1 : 1 dot per count. z/4 : 4 dots per count. counted by z1=1, z2=1 phase, the w h eel should stay at z1=0, z2=0 phase. (b) key - switches input : pressing z1, z2 will start to fill the z-axis counter with the value beginning at one.toggling "m" key can increase the value any tim e by one. the lim it value is 7. the relationship between the value and the transm ission rate as follows : va lue rate per second 1 2.7 2 6.4 3 9.2 4 12.8 5 15 6 18 7 20 (c) v o ltage-sensing m ode : there are 7 voltage levels in z1, z2 input. the transm ission table is the sam e as key - switches m ode. the relationship between the value of z-axis counter and the voltage as folllows : va lue v o ltag 0 1 v ?y 1 1.0v -1.6v 2 1.6v -2.2v 3 2.2v -2.8v 4 2.8v -3.4v 5 3.4v -4.0v 6 4.0v -4.6v 7 4.6 v ? u nder v dd =5v condition. (d) mechanical m ode : the function is the sam e as photo couples input m ode, except there is no noise im m unity . z/1 : 1 dot per count. z/2 : 2 dot per count. counted by z2 changing phase. *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 1 1 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller timing diagram (1) photo-couples pulse width : (2) ps/2 mouse (a) receiving data (b) sending d a t a *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 12 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller ac timing point: RSM84510 i/o pin equivalent circuit : *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 13 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 14 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 15 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 16 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
RSM84510 ps/2 scrolling mouse controller *w uxi risong micro electronic co.,l td 3 1 / 0 5 / 0 2 - 17 - www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet

▲Up To Search▲

Price & Availability of RSM84510

	To Download RSM84510 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .