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SC9638EP hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 1 o f 13 qfp-64-14 x 14-0.8 cd servo controller with mcu (with clock and radio frequency display) description the SC9638EP is a chip for cd player with clock and alarm clock. it has mature functions and provides the functions of cd play, radio frequency display, clock display, automatic sleep power off and double alarm bell power on and etc. the chip supports cd digital servo control, cd signal processing, frequency counting display for radio receiver, digital auto frequency dac output, and lcd directly driving. the periphery circuit of the chip is simple and the cost is low. features * cd play function ? compatible with cd/cd-r/cd-rw ? support cd play /pause ? support cd previous track/next track ? support cd fast forward/fast backward ? support cd single music, and whole disc repeat display. ? support cd random play display ? support program play for 20 music at most * clock function ? support clock display adjustment ? support double alarm bell, and can select cd play, radio receiving, or alarm clock. ? support nap function (6 minutes). ? supports sleep function. * radio receiving function ? support fm/am frequency display ordering information device package SC9638EP qfp-64-14x14-0.8 applications * desktop cd audio block diagram crin crout vref vor filter filctl vol com0 rad foc sled adin2 adin0 a f com3 seg0 seg9
SC9638EP hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 2 o f 13 absolute maximum ratings (t amb =25 c) characteristics symbol ratings unit supply voltage v dd -0.5 ~ +5.5 v input voltage on pins v in -0.5 ~v dd + 0.5 v operating temperature t opr -20 ~ +75 c electrical characteristics (v dd =4.5~5.5v; v ss =0v; t amb =-10~+50 c) characteristics symbol condition min. typ. max. unit supply voltage v dd 4.5 5.0 5.5 v supply current i dd 5v(cd is working) 50 ma rfin input signal v rfin 1 v reference voltage v ir 0 .5v dd common mode dc v com 2.5 v input current of central diode b i db 0 9 a input current of central diode a i da 0 9 a input current of central diode c i dc 0 9 a input current of central diode d i dd 0 9 a input current of satellite diode f i rf 0 4.5 a input current of satellite diode e i re 0 4.5 a low-level output current at pa port i il(a) 10 ma high-level output current at pa port i oh(a) 10 ma low-level output current at pb port i il(b) 10 ma high-level output current at pb port i oh(b) 10 ma ldon low-level output current i ldon 0 2 ma load resistance r l left channel is the same as the right. 5 k full-scale da output voltage v fs left channel is the same as the right. 0.9 1.1 1.2 v rad output current i rad high level is the same as the low level. 0 1 ma foc output current i foc high level is the same as the low level. 0 1 ma sled current i sled high level is the same as the low level. 0 1 ma moto output current i moto high level is the same as the low level. 0 5 10 ma low level output voltage v oldrive1 rad, foc, seld 0 0.4 v high level output voltage v ohdrive1 rad, foc, seld vdd-0.4 vdd v moto low level output voltage v olmoto 0 1.0 v moto high level output voltage v ohmoto vdd-1 vdd v (to be continued)
SC9638EP (continued) characteristics symbol condition min. typ. max. unit rad, foc, sled, moto output 3- state leakage current i zodrive rad, foc, seld, moto -10 0 +10 a dac total harmonic distortion plus noise (thd+n)/s 60 65 70 db 0 to 19 khz - - 0.001 db 19 to 20 khz 1 - 2 db 24khz 25 - - db 25 to 35 khz 40 - - db 35 to 64 khz 50 - - db 64 to 68 khz 31 - - db 68khz 35 - - db da filter attenuation filter_da 69~88khz 40 - - db osc frequency f system 8.4672 mhz pin configurations hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 3 o f 13
SC9638EP hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 4 o f 13 pin description pin no. symbol i/o description 1 pa.2/adin2 i/o i/o port is duplex as input channel 2 of adc. 2 pa.1/adin1 i/o i/o port is duplex as input channel 1 of adc. 3 pa.0/adin0 i/o i/o port is duplex as input channel 0 of adc. 4 pb.0/int0 i/o i/o port is duplex as external interrupt input int0. 5 pb.1/int1 i/o i/o port is duplex as external interrupt input int1. 6 pb.2/buzz o buzz state detec ting and buzz signal output 7 pb.4 o common i/o port 8 pb.5 o common i/o port 9 pb.6 o common i/o port 10 pb.7 o common i/o port 11 mvss -- analog ground for frequency counting of radio receiver. 12 amin -- am local oscillator signal input 13 fmin -- fm local oscillator signal input 14 mvdd -- mcu power supply 15 mrst -- mcu reset 16 mtest -- mcu test pin which is connected to the ground. 17 mxi i the crystal oscillator (75khz) input pin. 18 mxo o the crystal oscillator (75khz) output pin. 19 com0 -- lcd com0 port 20 com1 -- lcd com1 port 21 com2 -- lcd com2 port 22 com3 -- lcd com3 port 23 seg0 -- lcd seg0 port 24 seg1 -- lcd seg1 port 25 seg2 -- lcd seg2 port 26 seg3 -- lcd seg3 port 27 seg4 -- lcd seg4 port 28 seg5 -- lcd seg5 port 29 seg6 -- lcd seg6 port 30 seg7 -- lcd seg7 port 31 seg8 -- lcd seg8 port 32 seg9 -- lcd seg9 port 33 vpp -- otp power supply 34 vdd0 -- +5v dac power supply 35 vss0 -- dac gnd 36 vref -- internal reference voltage whose typical value is 0.5vdd 37 vor -- dac right channel output 38 filtcr -- dac right channel filter capacitor. (to be continued)
SC9638EP (continued) pin no. symbol i/o description 39 filtcl -- dac left channel filter capacitor. 40 vol -- dac left channel filter capacitor. 41 rad -- tracking drive output 42 foc -- focus drive output 43 sled -- sled drive output 44 moto -- spindle drive output 45 vdd -- servo supply voltage 46 gnd -- servo ground 47 v2/sled_sw -- sled motor position monitor signal input 48 ldon -- laser control signal output with built-in pull up resistor 49 vssa1 -- analog ground of servo module adc. 50 vdda1 -- analog supply voltage of servo module adc. 51 b -- central diode current signal input b 52 a -- central diode current signal input a 53 c -- central diode current signal input c 54 d -- central diode current signal input d 55 f -- satellite diode current signal input f 56 e -- satellite diode current signal input e 57 vcom -- dc voltage input 58 islice -- data slice feed-back current output 59 hfin -- efm signal input 60 hfref -- reference signal 61 vssa2 -- servo module hf and the analog ground of pll 62 vdda2 -- servo module hf and the analog source supply of pll 63 crin i 8.4672mhz crystal oscillator input 64 crout o 8.4672mhz cryst al oscillator output function description 1. lcd illustration the circuit adopts lcd of 416, 5v, 1/4duty, and 1/3bias, and the panel is as follows: hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 5 o f 13
SC9638EP corresponding truth table: com0(pin1) com1(pin2) com2(pin3) com3(pin4) seg0(5) 1a 1f 1e 1d seg1(6) pm 1b 1g 1c seg2(7) 2a 2f 2e 2d seg3(8) :(two points) 2b 2g 2c seg4(9) 3a 3f 3e 3d seg5(10) play 3b 3g 3c seg6(11) 4a 4f 4e 4d seg7(12) rdm 4b 4g 4c seg8(13) alarm1 alarm2 am/khz fm/mhz/dot seg9(14) sleep snooze rpt prog 2. jumpers function description: flag function description select 12-hour time system or 24-hour time system. 24/12clk function 0 hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 6 o f 13 24-hour time system 24/12clk 1 12-hour time system note: connect to the pull up resistor when the flag is 1. 3. keyboard keyboard arrangement:
SC9638EP hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 7 o f 13 4. mode switch 4.1 auto/buzz: select the alarm clock mode and the current state will not change when power on normally, it is active in alarm power on. 4.2 cd/radio fm, am : switch to cd, radio (fm, am) mode when power on; 4.3 in boot-strap mode, when press the key display, switch to the time and current state display. if there is no operation when in current state display within 5 seconds, return to the time display. 5. cd mode 5.1 cd key functions 1 stop this key will stop the cd play. 2 play/pause ? when cd stops, it will play if pre ss this key, and display the cd track; ? when cd plays, it will pause if pre ss this key, and the display flashes. 3 next/ff ? short press less than 1 second: next track skip to next track. if the current track is t he last one, then skip to the first track to play. ? long press more than 1 second: fast forward fast forward till the key is released, and if fast forward to the end, then play the first track. 4 prev/fw ? short press less than 1 second: last track when the time of current track is less than 1s, skip to the previous track. if the current track is the first one, then skip to the last one. when the time of current track is more t han 1s, skip to the head of the current track. ? long press more than 1 second: fast backward fast backward till release this key, if co me to the first one, then play normally. 5 rdm switch to random play state. when th is function is open, display ?rdm?. 6 prog/rpt when cd is in stop state, enter the program state, and the ?prog? flashes; ? press rew/ff to select the track, and prog stores the track, the program number adds by 1, and it can store 20 tracks at most. if no operation in 8 seconds, then exit the program state, but the tracks are saved; after completing the program, press play to ent er the program play stat e, and the ?prog? lights; ? press stop to clear the program tr acks, and then exit t he program state; ? when cd is in play state, enter the rpt function; ? when switch to single track or replay the whole di sk, press rpt to replay the current track, and ?rpt? flashes; then press rpt again to replay the whole disk, and ?rpt? lights.
SC9638EP 5.2 cd display 1) read toc 2) after cd tray is closed, begin to read toc, and enter stop state when completing the reading. if no operation in 5 seconds, then return to the time display. 3) cd play 4) program state hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 8 o f 13
SC9638EP 5) when there is error in cd play fm am mhz khz alarm1 sleep snooze rdm rpt pm alarm2 play 6) when there is no disk in cd after the above states, if no operation in 5 seconds, then return to the time display. 6. radio mode in radio mode, display the radio frequency, if no operat ion in 5 seconds, then returns to the time display; when the frequency is changed, switch to the frequency display automatically. 1) fm frequency display 2) am frequency display hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 9 o f 13
SC9638EP hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 10 of 13 7. clock mode clock key function 1) clock ? when short press is less than 1 second, display the time, and if no operation in 5 seconds return to the original state; ? press clock and fw/hour or ff/min to adjust the time. when short press, corresponding hour/minute adds by 1; while long pr ess, it will increase continuously; ? after it resets and before the time is adjusted, the display time flashes, and after completes the adjustment of the time, the display is normal. 2) alarm1/alarm2 ? when alarm closes, short press less than 1 sec ond, then open alarm1 or alarm2 function, and display alarm time, if on operation in 5 minutes, return to the original state; when alarm function is open, the ?alarm? light is open; ? when display alarm time, short press alarm1/ala rm2 key, to cancel corresponding function of alarm1 or alarm2, and ?alarm? light is off; ? press alarm1/alarm2 and fw/hour or ff/min to adjust alarm time. when short press, the corresponding alarm hour/minute adds by 1; wh ile long press, it will increase continuously; ? when in power off mode, alarm bell rings when the time is up. if in auto state, play cd automatically in cd mode; if in tuner state, then power on and play the radio, and display the radio frequency; if in buzz state, then output t he buzz sound. at this time switch t he auto/buzz can switch to output music or buzz; and press power or corresponding alarm can power off directly, and cancel the alarm state. ? when the alarm ring bell output, the corresponding alarm1 or alarm2 flashes, and press the corresponding key alarm to cancel the alarm ring, and power off, the alarm indica tor light is open all the time. ? power off automatically after alarm rings for an hour in cd mode; when in buzz output, close the buzz output after 5 minutes. unless the users sw itch to buzz/auto mode or press alarm and power, it will clear the one hour timing. ? alarm has memory function, and only clears the alarm time memory when it is electrified again. ? alarm1 ring bell?s frequency is 600hz; ? alarm2 ring bell?s frequency is 1200hz. 3) sleep press sleep to power on and play the cd automatically. sleep sets the time as 90-80-70-60-50-40-30-20-10-0; after 0 minute it will cancel sleep mode. the sleep flash display when set the timer, and after the timer is open, display sleep. 4) snooze when the bell rings, press this key to enter snooze mode, and after 6 minutes, the alarm clock will ring again.
SC9638EP 8. power off mode display the clock in power off mode. fm am mhz khz alarm1 sleep snooze rdm rpt prog pm alarm2 play 9. power down mode 1) switch to power down mode automatically when the power supply is only dc, and the ac backlight is off, dc backlight is open then off after 5 seconds. 2) in power down mode, only the clock control key is active, and at this time, only the clock and alarm can be adjusted, while the other keys are of no effect; press the key, the dc backlight is open for 5 seconds then off. hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 11 of 13
SC9638EP typical application circuit hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 12 of 13 SC9638EP com0 com1 com2 com3 seg1 seg2 seg3 seg4 seg5 seg6 seg7 seg8 seg9 mxi mxo amp_mute/pb.4 power/pb.5 9258_mute/pb.6 dimmer/pb.7 crin crout pa.2/adin2 pa.1/adin1 seg0 v cc power display clock sleep snooze alarm1 alarm2 3.9k 5.6k 8.2k 12k 22k 47k 150k play/ pause stop up/ff rand timer down/ rew prog/ rpt 3.9k 5.6k 8.2k 12k 22k 47k 150k 33k hfref hfin islice vcom e f d c a b moto sled foc rad motor driver output 33k 51 52 53 54 55 56 57 58 59 60 pickup head signal pre- processing input 2 1 41 42 43 44 19 20 21 22 23 24 25 26 27 28 29 30 31 32 63 64 17 18 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 fm am mhz khz alarm1 sleep snooze rdm rpt prog pm alarm2 a b c d e f g 1 23 4 colon dot play
SC9638EP package outline qfp-64-14x14-0.8 unit: mm handling mos devices: electrostatic charges can exist in many things. all of our mos devices are inte rnally protected against electrostatic discharge but they can be damage d if the following precautions are not taken: ? persons at a work bench should be earthed via a wrist strap. ? equipment cases should be earthed. ? ? all tools used during assembly, including sol dering tools and solder baths, must be earthed. ? mos devices should be packed for dispatch in antistatic/conductive containers. note: silan reserves the right to make changes without notice in this specification for the improvement of the design and perfo rmance. silan will supply the best possible product for customers. hangzhou silan microelectronics co.,ltd rev:1.0 2008.03.24 http: www.silan.com.cn page 13 of 13

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