意法半导体汽车音响系统设计参考规格书

Automotive SegmentCAR RADIO REFERENCE PLATFORM(CAP5)PRELIMINARY SPECIFICATIONVersion 1.0Author: CRM Application Team June, 2008 ------------------------------------------------------------------------------------------------------------------ This is preliminary data from STMicroelectronics. Details are subject to change without notice.TABLE OF CONTENT1. INTRODUCTION (3)2. MAIN FEATURES (4)3. SYSTEM OVERVIEW (5)3.1T OP V IEW (5)3.2B LOCK D IAGRAM (6)4. MCU PIN CONFIGURATION AND DESCRIPTION (7)4.1STM8 PIN OUT (7)4.2P IN D ESCRIPTION (9)5. KEY TABLE AND DESCRIPTION (11)5.1K EY T ABLE (11)5.2K EY D ESCRIPTION (12)6. MODE DESCRIPTION (16)6.1P OWER M ODE D ESCRIPTION (16)6.2W ORK M ODE D ESCRIPTION (17)6.2.1 Radio Mode (17)6.2.2 RDS Mode (19)6.2.3 Audio Mode (21)6.2.4 CD/MP3 Mode (24)7. APPENDIX (26)7.1S CHEMATIC (26)7.2PCB L AYOUT (26)7.3BOM L IST (26)7.4P LATFORM S YSTEM S OFTWARE (26)1. INTRODUCTIONThis document is meant to show the preliminary specification of the latest car radio platform (CAP5) which is provided by STMicroelectronics for a low cost and high performance total solution of car radio system (Tuner+ RDS + CD/MP3 + CSP + Power Amplifier).It is for demonstration of ST car radio key devices as well as reference design for customization based on these devices.2. MAIN FEATURES•RDS Function•High-end radio function with tuner(FE+STD), audio processor and power amplifier (TDA7705 or TDA7541/TDA7540 + TDA7419 + TDA7564 )•CD/MP3 player (DISC+USB+SD)•AUX input2.1 RDS Function•AF, switch to the optimal frequency for current station•PS, Display Program Service name•TP, TA, Traffic Program / Traffic Announcement (traffic news detection and auto switch) •PTY, Program Type display and search•EON, Enhanced Other Networks info, for update AF list and TP/TA(Eon traffic news detection and auto switch)•REG, Regional mode selection•CT(Time display if available)2.2 Tuner Section•FM1,FM2,FM3, AM1, AM2 Bands•Auto memory store / Preset scan•Manual Up/Down•Seek Up/Down2.3 CD/MP3 Player•CD/MP3 WMA player,•Support USB and SD card•CD-R, CD-RW playback•Directory Scan, Repeat, Shuffle•Next/Previous, FF/FB function2.4 Audio Section•Electronic /Rotary Encoder Volume Control•Bass, Treble, Middle, Balance, Fader Control•EQ Function: Control the preset equalizer(Classic/Rock /POP)•Loudness•Software/Hardware Mute•4X7W or 4X25W output•Telephone detection3. SYSTEM OVERVIEW3.1 Top ViewMCU (STM8)HIT (TDA7705) Tuner solutionFST/FST08 (TDA7540/7541) Tuner solutionPower Amplifier (TDA7386)RDS Decoder (TDA7478) Removed with HIT tuner solutionCSP (TDA7419)Power Management (L5957)CDMP3 Module Connector Connected toAccordo+ Module (STA1052)USB and SD Connector* Select one of the alternative tuner solutions3.2 Block DiagramNote: This reference platform is compatible to two Tuner Solutions. Customer can select one of the alternative solutions for customization design.4. MCU PIN CONFIGURATION AND DESCRIPTION 4.1 STM8 pin out(STM8 QFP 80-pin)(STM8 QFP 64pin)4.2 Pin DescriptionSTM8 80-pin Pin No. STM8 64-pin Pin No. Description1 1 RESET2 2 Oscillator Input Pin3 3 Oscillator Output Pin4 4 GND5 5 GND6 6 VCAP7 7 VDD8 8 VDD9 12 Remote input10 11 EVA input(rotator decoder)11 10 EVB input(rotator decoder)12 9 Power –SW input13 22 LCD DB7 output(LCD)14 44 LCD DB6 output(LCD)15 43 LCD DB5 output(LCD)16 17 LCD DB4 output(LCD)17 16 LCD DB3 output(LCD)18 15 LCD DB2 output(LCD)19 14 LCD DB1 output(LCD)20 13 LCD DB0 output(LCD)21 64 E output(LCD)22 18 VDD23 19 VDD24 20 GND25 21 GND26 63 RW(LCD)27 62 RS(LCD)28 23 Key AD input 029 24 Key AD input 130 25 Key AD input 231 34 I2C SCL132 26 NC33 27 NC34 28 RDS clock input(TDA7478/7479)35 35 I2C SDA136 29 RDS data input(TDA7478/7479)37 30 RDS quality input(TDA7478/7479)38 33 AFS output(FST/FST08)39 31 CLK_IN(HIT)40 32 FSU input (FST/FST08)ST79 Pin Number ST72521 Pin Number Description41 62 SSTOP input (FST/FST08)42 NC43 NC44 NC45 36 RDSInt input(HIT)46 37 RSTN input(HIT)47 SPI_CS input(HIT)48 39 GND49 40 VDD50 41 SDA_MOSI_IN(HIT)51 42 SPI_MISO_IN(HIT)52 CAN TX53 CAN RX54 45 NC55 NC56 60 CD ON output57 61 CD RQ output58 58 CD Emergency Eject output59 53 CD RST output60 57 CD INSERT input61 46 Audio MUTE output(Mute Amplifier)62 48 Hold(Amplifier)63 49 Power ON output64 50 EN_REG14 output(to L5957)65 51 EN_REG3 output(to L5957)66 52 CD_8V output67 NC68 55 I2C SDA69 56 I2C SCL70 NC71 NC72 ICC clock73 47 ACC ON input74 ICP DATA75 ICP CLOCK76 VPP77 NC78 NC79 NC80 NC5. KEY TABLE AND DESCRIPTION5.1 Key TablePOWERLOAD/ EJECTT_UPM1/Pause M2/INT M3/REP BANDM4/SHUFF M5/DIR- M6/DIR+ MODET_DNAF/REGTA PTY DISPLAY AS/PSLOCALDSPMUTERotator Encoder5.2 Key DescriptionAS/PS Press this key to activate Preset scan function (radio tunes to each of the 6 preset memory frequencies of the current band in turn and stays there for 5 seconds) inradio mode.Keep this button pressed for at least 1 sec to activate Auto Store (AS) function(radio searches from the current frequency and checks the signal strength level ofevery station in the current band until 1 cycle search is finished; after this, the 6strongest stations are stored to the corresponding preset number). When the ASoperation is finished, the radio executes the preset scan.RADIO mode: TUNEUP, TUNEDNDISC/USB/SD mode: TRACKUP/FF TRACKDN/FB RADIO mode:---Press this key shortly to operate Auto Seek tuning and “SEEK” isdisplayed in LCD.--- Keep this key pressed for at least 1 sec to enter Manual tuning mode, and if these two keys (TUNEUP/DN) are not pressed again for 5 seconds, radio will change form Manual to Auto seek tuning mode.System mute starts before PLL changes the tuning frequency and stops at the end of seek function.DISC/USB/SD mode:--- Press these keys shortly to next/previous playable item on theDISC/USB/SD. If the current track is the last one on source media, pressing next will enter PAUSE mode.If the current track is the first one on source media, pressing previous will enter PAUSE mode.--- Keep this key pressed for at least 1 sec to fast forward/fast backward.FF/FB can start from any position. This search modes is available for(CD/MP3), if unknown file types are encountered, the files are skipped.PTY Press this key shortly to toggle the PTY selection mode ON/OFF. When PTY is activated, PTY program type (default NEWS) is displayed and the “PTY”indicator is on.When PTY is on, rotate VOLUP/VOLDN to select program type. 31 optionsfeature (SPORT, INFO, CULTURE, ROCK, POP…) are available.When PTY is on, press TUNEUP/TUNEDN to PTY search. When PTYSEARCH mode is ON, and the selected type is match with the currentprogrammed type, then PTY selection mode turn off.If no key is pressed for 5 sec, the radio returns to normal mode again.AF Press this key shortly to activate AF ON/OFF. The icon is indicated as follow.Icon Indicator ConditionAF ON AF ON mode, RDS information is receivedAF OFF AF OFF modeAF blinking AF ON mode, RDS information is not received yet.When in AF ON mode, seek and auto save (AS) function search and save onlyRDS program.When AF switching mode is selected, the radio checks the signal strength of theAF all the time. The interval of checking time of each AFs depends on the signalstrength/quality of current station, from a few minutes for a strong station to afew seconds for a weak station.Every time the new AF is stronger than the current station , the radio switchesover to the AF frequency for a very short time, and NEW FREQUENCE isdisplayed for 1~2 second. Because the mute time of AF switching or checkingtime is very short, the interruption is inaudible.TA Press this key shortly to activate TA ON/OFF.When TA is activate d, it will trigger a TA seek request.Icon Indicator ConditionTA ON TA ON modeTA OFF TA OFF modeTA ON, TP ON TA ON mode, Traffic announcement is received.TA ON, TP OFF TA ON mode, Traffic announcement is notreceived yet.When in TA ON mode, seek, auto save (AS) function search or save only thosestations whose traffic program identification code has been received.RADIO mode:M1-M6DISC/USB/SD mode: PLAY/PAUSEINT --Radio modePress these keys shortly to recall a preset memory directly. In case of RDS mode, the strongest AF is selected after AF searching.Keep this key pressed for at least 1 sec to store the current station. When an RDS station is stored, PI, PS, AF list are stored as well.--- DISC/USB/SD mode:Press this key to switch PAUSE/PLAY when in DISC/USB/SD mode.In PAUSE mode, servo will PAUSE and text message is displayed.In Play mode, servo will continue to play and the tack info is displayed.Press this key to toggle the INT mode ON/OFF in DISC/USB/SD mode.When INT is activated, only a part of each track/song is played for a defined time (10 seconds).REP SHUFFLE Press this key to toggle the REPEAT mode ON/OFF in DISC/USB/SD mode. When repeat mode is activated, the current track or current folder is played continuously.Press this key to toggle the SHUFFLE mode ON/OFF in DISC/USB/SD mode. When shuffle mode is activated, tracks/songs are played in random sequence.LOAD/EJECT Press this key shortly to load/Eject the disc to/from loader.LOC/DX Toggles between LOCAL and DX tuner seek sensitivity.The stop station sensitivity in LOCAL mode is 20dBuv higher than in DX mode.6. MODE DESCRIPTION6.1 Power Mode DescriptionThe system has three power stages as below.4Power stage transition diagramBACK-UPPrinciple function: Power saving mode, backing up the user memories in low current consumption which is mainly achieved by setting MCU to low power consumption workingmode.Inputs: If ACC-ON = L is kept for at least 50 millisecond, system will back up current work mode and some information and then go to back-up power mode. Outputs: Output pins are L, I/O pins are input.Display: LCD off.STAND-BYPrinciple function: This is the power off mode with clock still being displayed.Inputs: If ACC-ON = H is kept for at least 200 millisecond and power state is set from on to off (by POWER key), system will go to stand-by power mode. Outputs: POWER port = HDisplay: Clock is displayedPOWER ONPrinciple function: System works in one of the following modes.•Radio mode•Disc mode•USB mode•SD mode•AUX modeInputs: If ACC-ON = H is kept for at least 200 millisecond and one of the followingconditions appears, system will go to power-on mode.(1)Power state is set to ON (by POWER key).(2)Insert DISC or plug in USB or SD device.Outputs: POWER port = H and change to work mode.Display: One of working mode is displayed6.2 Work Mode Description6.2.1 Radio ModeThis reference platform is compatible for FST/FST08 (TDA7540/TDA7541) tuner solution and HIT (TDA7705) tuner solution. Customer can select one of these solutions for their customization design. FST/FST08:FST/FST08 (TDA7540/TDA7541) is a high performance tuner circuit for AM/FM car radio. It contains mixer, IF amplifier, demodulator for AM and FM, stereo decoder, quality detection, ISS filter and PLL synthesizer with IF counter on a single chip.HIT:Highly Integrated Tuner (TDA7705) is a new generation of high performance tuners for car radio applications. It contains mixers and IF amplifiers for AM and FM, fully integrated VCO and PLL synthesizer, IF-processing including adaptive bandwidth control, Stereo decoder and RDS on a single chip. The utilization of digital signal processing results in numerous advantages against current generation analog tuners:– Very low number of external components– Very small space and easy application– Very high selectivity due to digital filters– High flexibility by software control– Automatic alignment.The following is the tuner control main flowchart in radio mode.Tuner Power Off(1)Band Change FunctionUse “BAND” key to change band in radio mode. The bands shown in the table below are implemented on this reference platform. A system soft mute is applied during the band transition period.(2)Preset Load/Save FunctionUse “M1~M6” key to load and save the preset frequency. The initial preset frequencies are also shown in the table below.Initial Preset Frequency (MHz)Band Frequency Band Channel Spacing M1 M2 M3 M4 M5M6FM1 87.5 - 108.0MHz50KHz87.5 90.1 98.1 106.1 108.1 91.2 FM2 87.5 - 108.0MHz50KHz87.8 91.8 93.9 97.1 103 104.3 FM3 87.5 - 108.0MHz50KHz87.5 87.5 87.5 87.5 87.5 87.5 MW 522 - 1620KHz9KHz0.522 0.603 0.999 1.404 1.62 0.522 LW 144 - 290KHz1KHz0.144 0.166 0.218 0.272 0.29 0.144 (3)Seek functionPress “TUNEUP/TUNEDN” key to activate seek function.Seek function include manual seek and auto seek. Auto seek has local and distant auto seek modes. The difference of seek sensitivity is about 20db between local and distant auto search in this platform. If AF is on, this function only searches the RDS stations.(4)PS/AS functionPress “PS/AS” key shortly to activate preset scan function (radio tunes to each of the 6 preset memory frequencies of the current band in turn and stays there for 5 seconds) in radio mode.Keep “PS/AS” button pressed for at least 1 second to activate auto store function to search the six strongest stations and then store them to the corresponding preset number automatically. When AF is on, only RDS stations are put in the memory.(5)Display descriptionBand Info Radio Frequency Preset No. Stereo indicator6.2.2 RDS Mode(1) PTY modeEnter/Exit PTY mode: Press “PTY” key to toggle PTY mode ON and OFF. During PTY mode, “PTY” indicator is on.Select the program type:When PTY is activated, the program types listed below can be selected by rotating the volume encoder.No. Program Type Display1 News "News"2 Affairs "Affairs"3 Information "Info"4 Sport "Sport"5 Education "Educate"6 Drama "Drama"7 Culture "Culture"8 Science "Science"9 Varied "Varied"10 Pop Music "Pop M"11 Rock Music "Rock M"12 Easy Music "Easy M"13 Light Music "Light M"14 Serious Classical "Classics"15 Other Music "Other M"16 Weather "Weather"17 Finance "Finance"18 Children Program "Children"19 Social Affairs "Social"20 Religion "Religion"21 Phone In "Phone In"22 Travel "Travel"23 Leisure "Leisure"24 Jazz Music "Jazz"25 Country Music "Country"26 National Music "Nation M"27 Oldies Music "Oldies"28 Folk Music "Folk M"29 Documentary "Document"30 Test "Test"31 Alarm "Alarm"Search for the selected program type station: During PTY mode, press “T_UP” or “T_DN” keys to search the stations whose program type is consistent with user- selected PTY type. If station’s PTY code in whole band is not matched to user-selected PTY type, the radio will automatically give up this searching operation and display “No Match” and then tune back to the previous station. If radio searches a station whose program type is matched to selected PTY code, then radio will stop at this station and then turn off PTY mode.(2) AF modeEnter/Exit AF mode: Press “AF” key to toggle AF mode ON and OFF. If RDS information is received in AF mode, the “AF” indicator is ON. And if RDS information is not received yet in AF mode, the“AF” indicator is blinking.AF (Alternative Frequency):When poor reception is experienced, the radio system will automatically switch to another frequency broadcasting the same program in the same RDS network with better reception during AF mode. Since the mute time during AF switching and quality checking is very short, the disturbance is inaudible for the listener.(3)TA modeEnter/Exit TA mode:Press “TA” key to toggle TA mode ON and OFF. During TA mode, the “TA” indicator is ON.TA search: When TA is activated, the radio will start a search procedure (TA seek) which stop only at the station transmitting traffic program or the station whose EON station transmitting traffic program. Switching to traffic information station:During the TA mode, the radio system will switch to traffic information automatically when a traffic bulletin starts even when the user is not listening to the radio. It changes back to the previous operation mode (CD/USB/Disc or Aux) after the traffic announcement has finished.(4)REG modeEnter/Exit REG mode: Press “REG” key to toggle REG mode ON and OFF. During REG mode, the “REG” indicator is ON.Restricting RDS region: the user can activate the REG mode to choose whether or not to restrict the AF function of the RDS channel to a specific region. If used without regional restrictions, the radio is set up to search stations with good reception in the same RDS network.(4)Display descriptionAF mode on TA mode on Program service nameREG mode onof RDS station6.2.3 Audio ModeThe main audio function is to control of the audio specification such as volume level, treble, mid and bass boost or cut level, balance and fader shifting, loudness, audio mute, audio input stage switching and voltage gain.(1) Audio item and level adjustmentAdjust audio item: Press the “SEL” key shortly to cyclically select one of the following audio items, -> VOL -> BASS -> MID -> TREB -> BAL -> FADER ->Adjust audio level: Rotate Electric volume control to increase or decrease the audio level.Many choices of audio level can be accommodated selected according to customer’s specifications.Auido Mode Attenuation LevelVOL Mute, -79~+15BASS -15 ~ +15MID -15 ~ +15TREBLE -15 ~ +15BAL Mute, -79~+15FAD Mute, -79~+15The audio levels defined in the reference platform are shown in the following tables.•Volume tableDisplay dB Display dB Display dB Display dB46 -6 34 -18 22 -30 10 -4645 -7 33 -19 21 -31 9 -4844 -8 32 -20 20 -32 8 -5043 -9 31 -21 19 -33 7 -5242 -10 30 -22 18 -34 6 -5441 -11 29 -23 17 -35 5 -5640 -12 28 -24 16 -36 4 -6039 -13 27 -25 15 -37 3 -6438 -14 26 -26 14 -38 2 -6937 -15 25 -27 13 -40 1 -7436 -16 24 -28 12 -42 0 mute35 -17 23 -29 11 -44•Bass/Middle/TrebleDisplay dB Display dB-6 -12 6 12-5 -10 5 10-4 -8 4 8-3 -6 3 6-2 -4 2 4-1 -2 1 20 0•BalanceDisplay dB (attenuate Right speaker) Display dB (attenuate Left speaker)L12 mute R12 muteL11 -28 R11 -28L10 -25 R10 -25L09 -23 R09 -23L08 -20 R08 -20L07 -18 R07 -18L06 -15 R06 -15L05 -13 R05 -13L04 -10 R04 -10L03 -8 R03 -8L02 -5 R02 -5L01 -3 R01 -30 0 0Note: The balance value on the display is the dB attenuation on the opposite channel. For instance, when R02 is displayed, a -5dB attenuation on the L channel is applied , similarly for the fader control.•FaderDisplay dB (attenuate Front speaker) Display dB (attenuate Rear speaker)R12 mute F12 muteR11 -28 F11 -28R10 -25 F10 -25R09 -23 F09 -23R08 -20 F08 -20R07 -18 F07 -18R06 -15 F06 -15R05 -13 F05 -13R04 -10 F04 -10R03 -8 F03 -8R02 -5 F02 -5R01 -3 F01 -30 0 0(2) Loudness FunctionKeep “BAND” key pressed for at least 1 second to turn on/off the loudness function. The loudness function is used to compensate for human bass/treble response loss at low volume.(3) DSP (EQ) FunctionThe main function of DSP is to provide several audio mode equalizers. The user can recall the best sound setting preset for different types of music.Press “DSP” key shortly to switch these equalizers control as following sequence.The DSP/EQ indicated messages are only displayed for 5 seconds if there is no key interruption.The preset data and display characters in DSP mode are show as below.DSP MODE BASS PRESET TREBLE PRESETDISPLAY CLASSIC +8 dB +8 dB CLASSIC POP +8 dB +12 dBPOPROCK +12 dB +12 dBROCK DSP OFFUser previous settingDSP OFF(4) Spectrum analyzer Function (reserved)A fully integrated seven-band spectrum analyzer with programmable quality factor is provided by TDA7419 CSP. 1k spectrum audio is indicated on LCD screen.DSP key pressed6.2.4 CD/MP3 ModeThis reference platform use "AccordoPlus” (STA1052) to achieve CD/MP3 player function. The AccordoPlus is a single chip device that performs all functions related to read back of optical disk: servo control operations, optical disc reading, high frequency signals decoding, EFM decoding, error correction, software decoding of MP3 and WMA encoded audio, sample rate conversion, file system management, of audio/program serial transfer.The CD/MP3 functions are easily implemented through communication interface control bus between the CD/MP3 player (module) and the host unit of the automotive entertainment system.(1)Source SpecificationDevice type: DISC, USB, SDDISC type: CD-DA, mix-compress-disc, mix-data-disc, data-disc.USB type: Meet Full-speed USB2.0 standard.Supported transfers according to Low/Full Speed specificationSupported Mass-storage devices with BOT (Bulk-only transfer) interface class.SCSI sub-class (0x06) protocol is supported (typically used not only by Flash devices). File type: MP3, MP2, WMA, AAC MPG4, Ogg Vorbis(2)Mode Chang/Auto-changePress “MODE” key to select DISC, USB and SD mode. If no media source is available in the corresponding mode, the system will display “NO DISC”, “NO USB” or “NO SD” and then automatically return to the previous work mode.When inserting a CD disc or plugging a USB device or an SD card, the system will automatically change to the mode whose media source has just been detected and then play it. Even when Power is off (ACC has to be on), the system can be woken up and turned to these modes.(3)Function DescriptionPlay and Pause:Press “M1/Pause” key to toggle between pause and play in disc/USB/SD operation mode. When pause mode is activated, the system will temporarily stop and stay at the position where pause started. Audio will be muted in pause mode. When this key is pressed again, the system will continue to play from that position onward and track information will be displayed.Load/Eject: Press “Load/Eject” key to load/Eject disc to/from loaderTrack up/down: Press “T_Up” or “T_Dn” keys to jump to the next or previous track.Fast forward/backward:Keep “T_Up” or “T_Dn” keys pressed for at least 1 second to fast forward/backward at specified speed in DISC, USB and SD working mode.Scan: Press “M2/Int” key to activate the scan mode. When scan mode is activated, only a part of each track/song is played for a defined time (10 seconds).Repeat: Press “M3/Rep” key to activate the repeat mode. The same track is played over and over. Shuffle:Press “M4/Shuffle” key to activate the random mode. When shuffle mode is activated, tracks/songs are played in random sequence.(4)Display Descriptiona) CD displayWhen disc songs are played, the LCD displays information as follows.b) Audio file display modeWhen audio files are played, the LCD displays information as follows.USB or SDTrack No. Time Info Audio file type (MP3, WMA, ACC) Operation modePlay, Pause, Scan, Repeat, Shuffle, FF, REWCD disc Info Track No. Time InfoOperation modePlay, Pause, Scan, Repeat, Shuffle, FF, REWAudio file name7. APPENDIX7.1 Schematic(Refer to file CAP5_Sch.pdf file)7.2 PCB Layout(Refer to CAP5_PCB.pdf file)7.3 BOM List(Refer to fileCAP5_BOM.pdf file)7.4 Platform System Software (Refer to CAP5 source code package)Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.The ST logo is a registered trademark of STMicroelectronics© 2007 STMicroelectronics – Printed in Italy – All Rights ReservedSTMicroelectronics GROUP OF COMPANIESAustralia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco -Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A.。