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SC9638EP
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
QFP-64-14 x 14-0.8
ORDERING INFORMATION
Device SC9638EP Package QFP-64-14X14-0.8
APPLICATIONS
* Desktop CD audio
BLOCK DIAGRAM
ADIN0 ADIN2 SLED RAD FOC COM0 COM3 SEG0 SEG9 CROUT CRIN A
F
FILTER
VREF
FILCTL
VOR
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SC9638EP
ABSOLUTE MAXIMUM RATINGS (Tamb=25C)
Characteristics Supply Voltage Input Voltage On Pins Operating Temperature Symbol VDD VIN Topr Ratings -0.5 ~ +5.5 -0.5 ~VDD + 0.5 -20 ~ +75 Unit V V C
ELECTRICAL CHARACTERISTICS (VDD=4.5~5.5V; VSS=0V; Tamb=-10~+50C)
Characteristics Supply Voltage Supply Current RFIN Input Signal Reference Voltage Common Mode DC Input Current Of Central Diode B Input Current Of Central Diode A Input Current Of Central Diode C Input Current Of Central Diode D Input Current Of Satellite Diode F Input Current Of Satellite Diode E Low-level Output Current at PA Port High-level Output Current at PA Port Low-level Output Current at PB Port High-level Output Current at PB Port LDON Low-level Output Current Load Resistance Full-Scale DA Output Voltage RAD Output Current FOC Output Current SLED Current MOTO Output Current Low Level Output Voltage High Level Output Voltage Moto Low Level Output Voltage Moto High Level Output Voltage Symbol VDD IDD VRFIN VIr Vcom IDB IDA IDC IDD IRF IRE IIL(A) IOH(A) IIL(B) IOH(B) ILDON RL VFS IRAD IFOC ISLED IMOTO VOLDRIVE1 VOHDRIVE1 VOLmoto VOHmoto Left channel is the same as the right. Left channel is the same as the right. High level is the same as the low level. High level is the same as the low level. High level is the same as the low level. High level is the same as the low level. RAD, FOC, SELD RAD, FOC, SELD 5V(CD is working) Condition Min. 4.5 0 0 0 0 0 0 0 5 0.9 0 0 0 0 0 VDD-0.4 0 VDD-1 Typ. 5.0 50 1 0.5VDD 2.5 10 10 10 10 1.1 1 1 1 5 Max. 5.5 9 9 9 9 4.5 4.5 2 1.2 10 0.4 VDD 1.0 VDD V A A A A A A mA mA mA mA mA K V mA mA mA mA V V V V Unit V mA V
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SC9638EP
(Continued)
Characteristics RAD, FOC, SLED, MOTO Output 3State Leakage Current DAC Total Harmonic Distortion Plus Noise
Symbol IZODRIVE (THD+N)/S
Condition RAD, FOC, SELD, MOTO
Min. -10 60
Typ. 0 65 8.4672
Max. +10 70 0.001 2
Unit A dB dB dB dB dB dB dB dB dB MHz
0 to 19 KHz 19 to 20 KHz 24KHz DA Filter Attenuation Filter_DA 25 to 35 KHz 35 to 64 KHz 64 to 68 KHz 68KHz 69~88KHz OSC Frequency Fsystem
1 25 40 50 31 35 40
PIN CONFIGURATIONS
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SC9638EP
PIN DESCRIPTION
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 Symbol PA.2/ADIN2 PA.1/ADIN1 PA.0/ADIN0 PB.0/INT0 PB.1/INT1 PB.2/BUZZ PB.4 PB.5 PB.6 PB.7 MVSS AMIN FMIN MVDD MRST MTEST MXI MXO COM0 COM1 COM2 COM3 SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 VPP VDD0 VSS0 VREF VOR FILTCR I/O I/O I/O I/O I/O I/O O O O O O ------I O --------------------Description I/O port is duplex as input channel 2 of ADC. I/O port is duplex as input channel 1 of ADC. I/O port is duplex as input channel 0 of ADC. I/O port is duplex as external interrupt input INT0. I/O port is duplex as external interrupt input INT1. BUZZ state detecting and buzz signal output Common I/O port Common I/O port Common I/O port Common I/O port Analog Ground for Frequency counting of radio receiver. AM local oscillator signal input FM local oscillator signal input MCU Power Supply MCU Reset MCU Test pin which is connected to the ground. The crystal oscillator (75KHz) input pin. The crystal oscillator (75KHz) output pin. LCD COM0 Port LCD COM1 Port LCD COM2 Port LCD COM3 Port LCD SEG0 Port LCD SEG1 Port LCD SEG2 Port LCD SEG3 Port LCD SEG4 Port LCD SEG5 Port LCD SEG6 Port LCD SEG7 Port LCD SEG8 Port LCD SEG9 Port OTP Power Supply +5V DAC Power Supply DAC GND Internal reference voltage whose typical value is 0.5VDD DAC right channel output DAC right channel filter capacitor.
(To be continued)
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SC9638EP
(Continued)
Pin No. 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
Symbol FILTCL VOL RAD FOC SLED MOTO VDD GND V2/SLED_SW LDON VSSA1 VDDA1 B A C D F E VCOM ISLICE HFIN HFREF VSSA2 VDDA2 CRIN CROUT
I/O ------------------------I O
Description DAC left channel filter capacitor. DAC left channel filter capacitor. Tracking drive output Focus drive output Sled drive output Spindle drive output Servo Supply Voltage Servo Ground Sled motor position monitor signal input Laser control signal output with built-in pull up resistor Analog Ground of Servo Module ADC. Analog Supply Voltage of Servo Module ADC. Central diode current signal input B Central diode current signal input A Central diode current signal input C Central diode current signal input D Satellite diode current signal input F Satellite diode current signal input E DC Voltage Input Data Slice feed-back current output EFM signal input Reference signal Servo module HF and the analog ground of PLL Servo module HF and the analog source supply of PLL 8.4672MHz crystal oscillator input 8.4672MHz crystal oscillator output
FUNCTION DESCRIPTION
1. LCD illustration The circuit adopts LCD of 4x16, 5V, 1/4duty, and 1/3bias, and the panel is as follows:
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SC9638EP
Corresponding truth table: COM0(PIN1) SEG0(5) SEG1(6) SEG2(7) SEG3(8) SEG4(9) SEG5(10) SEG6(11) SEG7(12) SEG8(13) SEG9(14) 2. Jumpers Function description: Flag 24/12CLK 0 1 24-hour time system 12-hour time system Function description Select 12-hour time system or 24-hour time system. 24/12CLK Function 1A PM 2A :(two points) 3A PLAY 4A RDM ALARM1 SLEEP COM1(PIN2) 1F 1B 2F 2B 3F 3B 4F 4B ALARM2 SNOOZE COM2(PIN3) 1E 1G 2E 2G 3E 3G 4E 4G AM/KHZ RPT COM3(PIN4) 1D 1C 2D 2C 3D 3C 4D 4C FM/MHZ/DOT PROG
Note: Connect to the pull up resistor when the flag is 1. 3. Keyboard Keyboard Arrangement:
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SC9638EP
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/RADIOFM, 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 press this key, and display the CD track; When CD plays, it will pause if press 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 the 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 than 1s, skip to the head of the current track. Long press more than 1 second: fast backward Fast backward till release this key, if come to the first one, then play normally. 5 RDM Switch to random play state. When this 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 enter the program play state, and the "PROG" lights; Press STOP to clear the program tracks, and then exit the program state; When CD is in play state, enter the RPT function; When switch to single track or replay the whole disk, press RPT to replay the current track, and "RPT" flashes; then press RPT again to replay the whole disk, and "RPT" lights.
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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
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SC9638EP
5)
When there is error in CD play
PLAY ALARM1 ALARM2 SLEEP SNOOZE RDM RPT PM FM AM MHz KHz
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 operation 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
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SC9638EP
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 press, 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 second, 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/ALARM2 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; while 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 the BUZZ sound. At this time switch the 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 indicator 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 switch 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.
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SC9638EP
8. POWER OFF mode Display the clock in power off mode.
PLAY ALARM1 ALARM2 SLEEP SNOOZE RDM RPT PROG PM FM AM MHz KHz
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.
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SC9638EP
TYPICAL APPLICATION CIRCUIT
PLAY
ALARM1 A
ALARM2
SLEEP
SNOOZE
RDM
RPT
PROG
PM
F G
B
FM AM
MHz E
D 1 2 COLON 3 DOT 4
C KHz
1
2
3
4
5
6
7
8
9
10
11
12
13
14
19 COM0 63 CRIN
20 COM1
21 COM2
22 COM3
23 SEG0
24 SEG1
25 SEG2
26 SEG3
27 SEG4
28 SEG5
29 SEG6
30 SEG7
31 SEG8
32 SEG9 B 51 A 52 C 53
64 CROUT 17 MXI 18 MXO 7 8 9 AMP_MUTE/PB.4 POWER/PB.5 PA.2/ADIN2 PA.1/ADIN1 9258_MUTE/PB.6 MOTO SLED
D 54
SC9638EP
F 55 E 56 VCOM 57 ISLICE 58 HFIN 59 HFREF 60
Pickup head signal preprocessing Input
10 DIMMER/PB.7 FOC 42 RAD 41
43
44
VCC 33K 33K
1
2
Motor driver output 3.9K 5.6K
POWER
3.9K 5.6K 8.2K 12K 22K 47K 150K
PLAY/ PAUSE STOP UP/FF DOWN/ REW PROG/ RPT RAND TIMER
8.2K DISPLAY 12K 22K 47K 150K
CLOCK ALARM1 ALARM2 SLEEP SNOOZE
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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 internally protected against electrostatic discharge but they can be damaged 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 soldering 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 performance. Silan will supply the best possible product for customers.
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