TC9146AP

TC9146AP TOSHIBA | Alldatasheet

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[2 TOSHIBA, ELECTRONIC O2 vey 409724? OO17999 4 | ees A LO BB bya few Foe dln T-77- 05-07 ) . ) Unit_in mm | j DIS-8 oo . ro 2 | | LSI FOR STATIC FM/MM/LW 3 BANDS g | DIGITAL TUNING SYSTEM : 3 - The TC9146AP/TC9147BP is the system LSI with | 3| | = PLL and control circuits integrated in single ~| 3 SSeMAX Slaszszazs chip that has been developed for application po a to PLL synthesizer type digital tuning system. eS {—} VV¥¥ | } The reciving frequency bands in the European | Af | | | oak region are 3 bands of FM/MW/LW. 2] _[los+ois 254t025 toy { 1) Thexois lhes*ads i The static type input/output unit has been employed to improve performance and simplify | rosa pitch ta 204 and tolerance 10 +025 design. ageinst theoretical center of each lead that 16 obtained on the basis of Nov and This LSI is available in the following two Mo. 48 leads. types according to difference in the frequency display system : | + 169146AP : Analog display in 16 dots. . i + 1C9147BP : Digital display by a 7-segment display with TD6301AP added. : + PLL and control circuits have been integrated in single chip. + To accommodate use in Japan, U.S.A, and European regions, the version for European region is in 3 bands structure of FM/MW/LW, and the version for domestic use in . Japan is in 2 bands structure of FM/AM (MW). + The operating keys, frequency displays and various operating displays are all of static type. + With preset memories for 16 channels built in, various applications are possible. In addition, the last frequency memory and last channel memory are provides for each frequency band. On TC9146AP, the preset memories for 6 channels are provided for FM/AM (MW+LW) . . + The auto stop circuit has been further completed with due consideration for. stop during the auto search operation. + The display LED drivers have been built in and almost no external part is required. + The swallow counter is formed in combination with prescaler TD6104P at FM to provide reference frequency 25kHz for improving the performance. == TOSHIBA === . . —212— fi

3 TOSHIBA ELECTRONIC O2 DE—} 109724? OO1a000 5 > i . 1 TC9147BP poo. T= 77-05-07 j MAXIMUM RATINGS (Ta=25°C) CHARACTERISTIC : Output Voltage ~0.3 vVppH0.3 * [Hover btvipation [2p [ao] (Note) Bipolar transistor output current. t ; ; PIN CONNECTION 4m «TERMINAL IS CoMMON TO . TOS146AP, TO9147BP ! . qnp Ma 42 Ml Vpp . : xr Ml aba EL TERMINALS (DENOTES i ys 40 fe inn TERMINAL NAME OF t rue SO Ary T0091 46aP MW ils . 38 Ml Pso LW ily ov fe PMzy MANUAL Bl So Mi rest AUTO My 30 IM Do-2 : UP Mo 34 WW pone ‘ . 2 DOWN M10 33 BD stopa(stor) ~

2 STO Mai 82 D stopa(1Fy)

M1 fie 31 1 STOPS( Pee) - M2 Mas so Pm MS Mig 29 Ee M4 Bis 28 MUTE MS Hie a7 0 DATA(HL) Se . M6 May 26 Dok2 (Hz) (11) wy Dig 25 Boxe (us) . (12) MB ig 24D o/s (Ha) (18)Me1 Goo 23 Ww oscr . 7 . (La )Moz Ger 22 Moscz SSS a AU DIGITAL ICs —213— . . 4 _

TOSHIBA, ELECTRONIC O2 DEM 909724? 0018001 ? ay | TC9146AP, ), T11-0807 | BLOCK DIAGRAM : (stop) (Fin) (Poe) : AMyy PEC FMyy TEST © DO-2 Do-z STOP] STOP2 ATOPS rity Tr tts PROGRAMMABLE PHASE AUTO STOP couNTER COMPA counTaR RATOR oO m Lt Ld i i | md. [erm ewer Eb re hd en TA Tt I Lg (a2) mt © “ MT CONSTANT ROM PATA “n PROCRHSSING CIRCUIT — auntreuexer | [%;"7 KH oKz (uS) | pisPLay oe (Ha) pEooDEA v= yo E ret sn osc 3 GENERATING jee [Pe : orRourr [i oso 2 p me ll Sea i 02 ; i 1 > wel (13) E| | rrsoer mon = 18g 4 we a) | ga 1g6 PRESET MEMORY ur (nL) H i ; (Ram ) ibs Knee wn Bs i . 1 C) us : 5 gq wenn en Le Me & LAST FREQUENCY MEMORY [> ‘ai me us . ‘o801— BAND SELECTING SCAN CONTROL ‘LATER CONTROL () sto O-O: wae wae! . Xq Xp mo OW “MANUAL AUTO UP DOWN @ ( » cf @ denotes termine) name of Too146AP . [e) denotes terminal common to TO9146AP/TC9147BP =" O SHI BA 2ssseissees scien 4 mo . —214— : j

1 TOSHIBA. ELECTRONIC O2 DEM 9097247 o01a002 9 i DL. . TC9146AP, if TC9147BP TT 1-05- 07 ELECTRICAL CHATACTERISTICS (Unless otherwise specified, Ta=25°C, Vpp=5.0V) a = mena we | weal few ahead Psa [a] Vpp=5.0V, INH=0V . Inhibit Supply Current ppt [Yop _— [-[-[ ss | WA Fe oatini wy fon [af al = ee FMIN = Pr | v | fan | Eater fos] =| = | AMIN 5 ple Vin= = ‘IF: [= ‘FM: [as Riggvensn NY [oe [eter vensti [| 00 [as | l psc i i Input 1/0 Input |"H" Level] Viv2 |_| a5| v| wo | UP, DOWN, TEST Input Pull-Down 15 30 ka Resistance FMIN, INS OP3 Feedbacl 400 800 kQ Resistance FI, 2, STOPI, NA INT Input EE FM, MW, LW, MANUAL, AUTO, STO, (TC9146AP : M1 M6, TC9147BP :M1 M8) ure . OSC, MUTE, (TC9146AP : Pee, TC9147BP: DATA, CKl, 2, 0/5) : | Fae er a RCE ALDIO DIGITAL ICs:= —215— .

f TOSHIBAs ELECTRONIC O2 DEM 409724? 0014003 O my TERE CHARACTERISTIC SymBoL |CIR-| TEST CONDITION TYP. unt] DO-1, DO-2 [ar tevet [or | [orto oe [co] | "MeL, MC2 ('TC9147BP only) .. . , [we reve [ton | [Vornov Jone [uo] = [ma] HLvH4 (1C9146AP only) : fowtrut current | "Wiavel | Tor [[Yoret.ov pas wep = [mi] LL ~L4 (TC9146AP only) fowtrut Gurrene [TIF Level [Yop [ [Yortv ‘sp uep - [w=] fieak current ot OFF | | Yirs.ov «= P= PO va] Note : Parameters with * mark aré guaranteed at all conditions of Vpp=4.5%5.5V Ta=-30V 75°C. ; | FUNCTIONAL EXPLANATION OF TERMINALS | 2 [| ceystat Osetttator | Connect a 7.2 Miz crystal for referencel With a built] terminal frequency. in feedback . 4 FM band designating = . input

5 MW band designating| Mutual reset type for selecting FM/MW/

4 ° A input LW bands . : . tw | UH band designating input ~ | oT tan Manual tuning mode

7 MANTAR designating input Mutual reset type for selecting manual

and auto search operating modes at time| Auto search tuning A mode designating» | Of UP/DOWN tuning input . . Up operating key oy . i . input For UP/DOWN tuning with the push key DOWN operating key | Connected : . 10 ° . . input - | oy as Pere 00S) 002): ee ee oe cod : ~216— .

q TOSHIBA, ELECTRONIC D2 DEM} 9097247 0018004 2 i" . [ T77-05-07 PIN NO] SYMBOL | TERMINAL NAME FUNCTION Memory store com The preset memory is set to write A mand input state by this input 12 | i | Preset memory chan- | .Controls write/read of preset memory cfs nel designating of 6 channels of FM/AM (MW+LW) A] & 17 | M6 input $ LL With a matrix formed with H1VH4, used a s rad display for analog display of receiving 3 : 14 P frequency in 16 dots.

12 ML Preset memory chan-— In combination with MCl and MC2 inputs,

5 s nel designating controls write/read of the internal A By io | ms | input 16 channel preset memory. § | 20 | Used for setting the 16 channel preset Fs NGL memory either to FM/AM (MWHLW) 8 chan- & | a | omen | Mery contro! {nPUE] nel Fixed system or FUHMHLN 3 bands | 16 channel random system ! 22 |osc2 | aM oscillator ter- | C.R terminal for oscillator that de~ : H minal . cides SCAN speed at time of AM search. | 23 |osc1 | FM oscillator ter- | C.R terminal for oscillator that de- | minal cides SCAN speed at time of FM search. ‘ 24 | He ‘With a matrix formed with L1vL4, used : 5 fi 16 dots display for analog display of receiving Fs i 27) mL Pt frequency in 16 dots. 5 a | 24 | 0/5 | FM SOkHz output for | 50kHz step output in FM band in Europe European region. Become "H" level at 50 kHz. & | 25 | ox | Transmits serial data and timing clock = Receiving frequency | to be sent to Receiving Frequency 8 | 26 | cx | data serial outputs | Digital Display Driver TD6301AP. Oy DATA ° CK1 output also serves for pee sound This terminal is placed at "i" level | ze | wore | Muting signal output! 3+ time of muting qutput [29 | 22 [Region Designating | For designating Japan, U.S.A and

31 Pee sound signal Outputs pee sound signal for confirm

Output . ing operation at time of key operatior etc. . [ Counts IF 450 kHz signal at time of AM| @ 32 |. Try | AIF signal input | Tene te tacchs | | $

33 Auto search stop Stops auto search by inputting signal 8

signal at "H" level. : [tice AUDIO DIGITAL IC=a: | : ~ =a7- - .

to TOSHIBA, ELECTRONIC O2 DE—} 9097247 OoO1eoos 4 np - ~ T09146AP EtTOS OF | TC9 | roe] sino arma mee [ror ae 31 | STOP3 | AM-IF signal input | Stops auto search by counting IF 450 | KHz signal at time of AM. i When a "H" level signal is input under &

32 Auto search stop the ‘state where a "H" level signal is 5

signal input being given to STOP1 Input, stops Auto = = - search. g . 33 | svop1 | SCAN speed slow When a "H" level signal is input, input reduce auto search scan speed to 1/2. | 34 |do-2 | Phase Comparator 2 try state buffers are transmitted ¢ | [735 [po] output parallelly from one phase comparator. | When a "H" level signal is input, this | 36 [rest | Test Terminal terminal is placed at test mode. ! 37 | FMqy | FM Programmable Output from prescaler TD6104P is F i i counter input connected. i : 38 Prescaler control | Controls selection of 1/30 and 1/32 output division of prescaler TD6104P eee aaa AM local oscillation signal is applied | | if > Normal operation at "H" level and | 40 | INT | Inhibit input inhibit status at "L" leve. ! __- Normal operation at "H” level, and

1 INT Initialize input internal state is initialized at

: "L" level. pastor siete | ia —FE || . INPUT/OUTPUT EQUIVALENT CIRCUIT Ps A. Bipolar Transistor LED Driver Built-in 1/0. B. C-MOS Input with Pull-Down : ‘yp Resistor Le = fe C. C-MOS 1/0 - D. C-MOS Output == TO S HIB A scesessecieeenrecncreemmnceanee cere neccacemesmanmerr ne cdomernar reser - —218— . f

BT IETF TE ETE TT TE I RT SCO. ORR Pi i TOSHIBAs ELECTRONIC Oe DE 404724? 0018004 & i | }/, —7C€9147BP So , = T-77-0S-07 E. C-MOS Input (without Pull-up. Pull-Down F. With Built-in Input Amplifier Resistor) o—_Do— wi G. Try-state Output H, Noh MOS LED Driver Output Yop . _ | ed i I. Bipolar Transistor LED Driver Output i . | OUTLINE OF FUNCTIONS i 1, RECEIVING BANDS | 1) FM/MW/LW bands can be received in European region and FM/AM bands in Japan and U.S.A. 2) AM band for U.S.A is able to receive up to 1710 kHz, and 9 kHz separation , is also available. Note: * mark AM 522~1629kHz at TC9147BP, 522~1611kHz at TC9146AP. Desti- | Band | Range of Receiving Frequency] Reference nation | Name | Frequency TF | stop Frequency] - Remarks FH Europe S0kiz 87.50 108.00 wiz | +10.7mHz | 50 kHz | 25 kHz | separation . 5 Mi U.S.A 10 kia U.S.A. | AML} 5201710 kHz | 4450 kHz | 10 kHz | 10 kHz | separation Mi U.S.A 9 kHz Japan [Ec AUDIO DIGITAL ICs . —219— . 4 A

Eo - TOSHIBA, ELECTRONIC O2 DE— 9097247 gouaoo? 4 i ~ TC09146AP PTS 07 2, TUNING FUNCTION - 1) Manual tuning with UP/DOWN Key 1 step/push step tuning Fast forward tuning with UP/DOWN key pushed continuously 2) Auto search tuning by 1 push of UP/DOWN key ARI or stereo channel only can be searched .(TC9147P only) | AM auto stop circuit can be simplified through IF count system. | . SCAN speed can be set independently for FM/AM. 3) Preset tuning by memory read. 3. PRESET MEMORY AND LAST FREQUENCY MEMORY | 1) Preset memories for 16 channels have been built in (TC9147BP) Either the FM/AM (MW#LW) 8 channels allocation system and the 16 channels random selection system regardless of band are available. Further, on TC9146AP the preset memory is of 6 channels fixed type for FM/AM (MW+LW). | 2) Last Frequency Memory has been provided for each band of FM/MW/LW { The last frequency memory is capable of storing frequency data and preset memory channel Number at that time (Last channel memory function) | 3) All memories are consisting of static C-MOS RAM for realizing low voltage | and low power consumption, 4, DISPLAY FUNCTION : ; 1) All displays are of static type. . 2) LED Drivers have been built in for band, MANUAL/AUTO and memory channel display. ~ Fas 3) The receiving frequency display has the following two kinds. + TC9146AP : Method of linear display by doting of LED lamp. r + T09147P : Method of digital display by connecting TC6301AP. . —220- i

\\ : TOSHIBA, ELECTRONIC O2 DE 9097247 go1ecods o | : =—17-0607 ——— 5, INHIBIT FUNCTION The inhibit function inhibits all input/output and completely stops LSI i operation including oscillation of OSC. This function makes it possible to | back up the receiving state including memory contents for a long hour by a | capacitor or battery when the power supply of the set is OFF. j . EXPLANATION OF OPERATION | PLL UNIT , H 1, REFERENCE FREQUENCY AND CRYSTAL OSCILLATOR . | Oscillation frequency from the crystal oscillator is divided to generate i reference frequency of 25kHz at time of FM, 9 or 10kHz at MW and kHz at LW. i + Crystal oscillation frequency is 7.2 Miz + The crystal oscillator has a built-in self-bias amplifier and can be composed easily only by connecting a crystal and a capacitor as shown in the following diagram. Further, oscillation is stopped under the inhibit state. | (ay ou i o x tar x’ tal=72 Mie on Ce 0 =10~s0pP : a 0g=10~50 pF . . * A crystal that has a low CI value and excellent starting [rer [wean mc ee I sestnesesmgpanemecseetnatnestomesresemmercecema seer AIO DIGITAL Cx: . —221- . It

ih TOSHIBA, ELECTRONIC O2@ DEM 9097247 0018004 mm i - : _ : -o1 TC9146AP, / 4-17 08 a 2, PROGRAMMABLE COUNTER . The programmable counters for FM and AM (MW/LW) are in different circuit configuration. i 1) FM Programmable Counter The FM Programmable counter is of swallow count type in combination with TD6104P, As a result, reference frequency 25 kHz is obtained and performance is improved. . The following diagram shows the connection with prescaler TD6104P. . In this case, the transmission ms104P delay time of PSC output for controlling TD6104P is limited. Cases eal Therefore, wiring for this PSC Voo Ly gs 4 5 6 output should be as short as bk Fu 080 possible. PSC transmission ad con 1 250 ns. ous 7 ! delay time td<250 ns ps0 G8) [2 ta @) i ool aP i Fuyy @?} : 2) AM Programmable Counter The AM (MW/LW) programmable counter 1s of direct division type. ' The signal transmitted from AM channel can be directly input to AMIN terminal, | AM(MW/LW)OSC 001uF AMyy Input Amplitude Vyy(AM)=05Vp—p + As both FMIN and AMIN have a built-in input amplifier, a signal shall be applied with a capaciter connected. : + Under the inhibit state and at AM (MW/LW), PSC output is fixed at "L" level.’ ee . + IF offset has been provided in advance for frequency division by the . programmable counter. . : ee | * + —222— . | I

7 a... MOSHIBAy ELECTRONIC Oe DEG 1097247 ooO1L8o10 4 poe | /, TC9146AP, TT 0S 01 3, PHASE COMPARATOR . . : The phase comparator is a unit that compares phases of reference frequency and programmable counter output and controls Vco through the low pass filter so that thus two signal frequencies and phases agree each other. + Two tri-state buffers DO-1 and DO-2 are transmitted parallely from one : phase comparator. Becuase of this, two sets of low-pass filter can be used without necessity for switching them. | + Under the inhibit state, both DO-1 and DO-2 outputs are kept at "L" level. ; Reference _R _f LSD LIL 1 : Frequoncy Phave | po-a Programmable _8 |Comparato ° i count output | | Mig tl | BO-L Bm PORT ----Jb--- | Do-2 High Impedance stato ! DO Output timing chart i | | H ! . . | ‘An example of the low-pass filter to be connected to DO-1 and DO-2 outputs . is shown below. This is an active low-pass filter through the Darlington connection of FET and transistor. ‘ . Yoo ° oe Rg RL to Vggvaractor diode . - Ry po-i or Do-2 - Low-pass filter constant (standard value) c = 0,33 uF - RL = 10 ke : Ry = 8.2 ka Ry = 10 k@ : _SUScGE T AUDIO DIGITAL ICx= . —223— : ne _ i A

ir TOSHIBA. ELECTRONIC O2 DEG do972e4? oO1a011 0 TC9146AP, TC91 47BP T-T11-0S 01 9097247 TOSHIBA. ELECTRONIC _. O2E 18011 Db CONTROL UNIT 1, DETERMINATION OF OSC1 AND OSC2 OSCILLATION FREQUENCY . OSC1 and OSC2 are C and R connecting terminals of a single terminal type oscillator. Scan speed at time of manual fast forward and auto search is decided by this frequency. OSCl is for FM and OSC2 is for AM and oscillation frequency can be set independently. Further, OSCl oscillation frequency also seves for deciding manual fast forward pushing time, muting signal transmission time and store state automatic releasing time. . Both OSC1 and 0SC2 stop oscillation unless it is required. . 1 Oscillation Frequency foso 9-7 aga (H2) (Note 2) - osor sca 7: OxSRe — ROxS Ry i roe] . ! (Note 1) Ry=10k © 100k2 i (Note 2) Refer to Graph (1) shown later. . | | I | = 0 Scan Speed (Fast At FM f£(FM)=5 foscl (step/sec) 10(step/sec) | . FWD. Auto Search) : At AMGm/iM)| £4 (AM)=} £osc2 (step/sec) ay [ oCoter/see) . Manual Fast FWD Push Time Tgcan=14/foscl (sec) ic ra 0.7 (sec) Store State Auto Release Time Tero =224/£pgcy (sec) f3 11 (sec) a Moting Sigeal Tyre S)*7/foser (see) | g § 10.35 (see) Output Time A - (Note) fogcl ! OSCl Oscillation Frequency, fosc2 : OSC2 Oscillation Frequency === TOS HIB A s228exsssccsseccmcr ance . : —224—

TOSHIBA, ELECTRONIC O2 DEff 109724? OO18Ole 1 p> : /,. *031 46AP, a EEE TEI OS 07 _ 2, DESIGNATION CF DESTINATION BY JAPAN, U.S.A AND EUROPE . Regional designation by Japan, U.S.A and Europe is made by El and E2 terminals. a ee ee | ee ee ee . a U.S.A. + For U.S.A region designation, AM(MW) band 9 kHz/10 kHz separation can be selected. . t | + When the INT terminal is placed at "L" level, El and E2 Inputs inhibit i read operation and keep the previous state. 3, SELECTION OF RECEIVING BAND a The receiving bands are selected by the FM, MW and LW terminal inputs. | 3 bands of FM/MW/LW are selected for European region designation and 2 bands H of FM/AM (MW) for Japan and U.S.A designation. , + FM, MW and LW inputs are of mutual reset type and are "H" level active. i ! + I/O type with a built-in bipolar transistor driver, and the band display by. LED is possible. . + Has the internal latch circuit and able to correspond to either the push key or lock switch. The key connection is shown in the following diagram. . However, when the lock switch is used, different band memory channels under the random memory system cannot be read. + Input by multiple pushing the key is not accepted and muting output becomes "H" level. : + No LW input 4s accepted in Japan and U.S.A designation. ™ Dil LW ru MW LW j ana | | I t | Yop : ° 3° . : 4 Da] _SInSoumNnactceer eRe AUDIO DIGITAL IC: —225— : q a

| TOSHIBA, ELECTRONIC O2 DE— 9097247 0018013 3 | ca . Ue aitie cs ec ee nd TC91 46AP, // T0807) 4. UP/DOWN TUNING METHOD ' This type of tuning is made by 4 input terminals : MANUAL, AUTO, UP and DOWN. : @) Connetion of [wanuaL], [AUTO], [UP] ana keys | The MANUAL and AUTO Inputs are in the same circuit configuration as the | above-mentioned band selecting terminal. ; | . + Display LED can be connected | . * Either the push key and lock switch can be used. The push key should be connected to the Up and Down keys. Further, these 4 inputs terminals are all "H" level active. | MANUAL AUTO UP DOWN MANUAL AUTO: | Yop vm ® © | 2000, When MANUAL/AUTO Lock key is : ; used. os | (2) Manual 1 step/1 push tuning . (a) Push key for the manual tuning mode. (b) When [UP] or is pushed for a short period, receiving frequency , is up or down at the above frequency step. 4 + If the band edge is reached when the or input is con- tinuously applied, key input is no more accepted and the tuning is stopped. . + The UP or DOWN input has been set at fast acceptance timing and a short on time rotary switch can be used. * Trin . ~ Min pulse width of UP/DOWN input . 18me min accepted Trin & 2.5 ms (input during this period is not accepted.) == O'S HI BA 22sec ieee nese semen apes : ~226— I | -

TOSHIBA. ELECTRONIC O2 DEM} 9097247 0018014 S ne i ( C9146AP, i . (3) Manual Fast Forward Tuning T-171-0S-0T (a) Set at Manual Tuning Mode as in (2). (b) When the [UP] or key is pushed continuosly for a fixed time (Tscan), receiving frequency is fast forwarded and scan is mode, and the key is released, Scan is stopped. . + When the band edge is reached, Scan is stopped. * Key push time (TgcaN) and Scan speed fs(FM) at FM are decided by OSC] oscillation frequency (fos). Further, Scan speed fg (AM) at AM (MW/LW) is decided by OSC2 oscillation (fosc2). 14 foscl Ty = z—— (sec), f,(FM)=—>~ (step/sec), | SCAN" foscL s( 2 (step/sec) | f ! ; £4 (aM) = 2892 (step/sec) H s 2 P i (£ogc1"20Hz, Tgcay=0.7 sec) | on onr | Key input —_J L j Fast Forward | Tgcan_| Scan operation : t 1 Step up stop t a . + As long as the and [AUTO] keys are pushed simultaneously, . the manual mode is kept. . + Simultaneous inputs of the [UP] and keys are not accepted. (4) Auto Serch Tuning : The auto search tuning is the function that automatically searches and receives broadcasting frequency. ‘ (4-1) Auto Search Tuning Method . (a) Push the key to set at the auto search tuning mode. (b) When the key is pushed by one push, Scan is started in the up direction, When the key is pushed, Scan is started in the down direction. In this case, Scan is not stopped even when the : - key 4s released. Looe SA Rs AUDIO DIGITAL ICs: : . . —227—

4 TOSHIBA, ELECTRONIC G2 DEg 9097247 aoLagis 7 -

wt a BPEL Trae oe . TC9146AP, (7 777-0607 | (c) When Auto Stops Signal is received (when there is a broadcasting station), Scan is stopped. * The auto search tuning scan system is in triangular waveform shape. i + When the key is pushed during the scanning in the up direction, | the scanning is changed in the down direction. Similarly, when the | [UP] key is pushed during the scanning in the down direction, the | scanning is reversed in the up direction. * UPPER SIDE : ‘BAND EDGE . START . ° START TOP STOP ‘OP STOP . BROADCASTING

7 START

‘BAND EDGE | | * The auto search scan speed is same as the fast forward scan speed __ i i fs(FM) at FM, fs(AM) at AM (MW/LW). | { The auto search tuning is released when the following operation is . mode : When the operating mode is changed to the manual scan mode. | When a receiving band is changed. | . When the preset memory is read. — . . When the status is changed to the inhibit state. . + When the [UP] or key 1s kept pushed during the auto search tuning, no auto stop signal is accepted. In addition, the band edge . is reached, the auto search tuning is stopped. _ (4-2) Method of use of Auto stop terminals (STOP1, STOP2, STOP3) (TC9147BP) * When a "H" level signal is applied to STOP1 input, auto search scan speed is reduced to 1/2.(Slow mode). : * When a "H" level signal is applied to STOP2 terminal under the slow mode (STOPl=at "H" level), the auto search tuning is stopped. . Through the above operations, it i8 possible to stop the auto search after searching ARI or Stereo station only.

7 OS HIB A 2s esr sccm ant accimecaenmrieeecge

oT : —228— . q

7 TOSHIBA, ELECTRONIC O2 DeEgpiod7e4? OOLaOL 4 . - ae VN" TC9146AP, T-7121-0O6-OT po —_ —— | (a) Method of auto stop signal input during normal auto search, : Input the auto stop signal to both STOP1 and STOP2 terminal, or with STOP2 terminal fixed at "H" level, apply the auto stop signal to STOP1 terminal. stop1 @) avo stor sravaz STOP. 1 @) AUTO STOP SIGNAL |_| (STOP AT'H'LEVEL) Yop (STOP AT'H'LEVEL) “stor2 62) : STOP 2 Ge) ‘TO9147BP ‘TO09147BP . (b) When ARI or Stereo Station only is searched Apply the normal auto stop signal to STOP1 terminal. Apply ARI or Stereo Station indentification signal to STOP2 terminal ("H" level shows ARI of . i Stereo Station). | — | AUTO STOP SIGNAL | sror1 G3) (STP At"H'LEVEL) | I ARI OR STEREO STATION | stor 2 a) IDENTIFICATION SIGNAL : | C'R'LEVEL SHOWS ART OR { STEREO STATION) STOP1 and STOP2 input timing chart is shown below: _*,As shown in the chart, STOP1 and STOP2 input detection is made at the last . . scan time. ‘This provides a margin to stop signal time constant. ‘ FREQUENCY 7 woreared OOO nt SCAN CLOCK INTERNAL STOP. SIGNAL DETECTING PULSE’ 1 ' ' DETECTING PULSE’ 1 1 i nl wer SS ‘ - 3#00'NT CARE . - ROMMATS STOP - NORMAL SCAN MODE SIOW MODE MODE TO914BP AUTO SEARCH TUNING L_ AAAI AMA AUDIO DIGITAL IC== | —229— : ee 7 I

f TOSHIBA, ELECTRONIC O2 DEQ) 4097247 oo18o012 oO | . TC91 46AP, ( T11-OS-07 . IFrn (TC9146AP)/STOP3 (TC9147BP) terminal . This terminal is the input of IF signal (=450 kHz) at time of AM (MW/LN).. When this input frequency enters the specified range against 450 kiz, . auto search tuning stops. + As the input amplifier has been built in, apply IF signal with the capacitor connected. : .+ IFqy» STOP3 input is not accepted at time of FM. : + Range of Auto Tuning stopping. ~ 450 kHz + about 3 kHz 450 kHz + about 600 He + Since IF signal has been amplitude modulated, it is adequate to apply it to IFjN, ST0P3 terminal through the limitter amplifier. ‘TO9146AP ~ TRyy(82PIN) = toe . _4+_< }=— AM(MW/LH)IF SIGNAL 001, . Tool47P ae LIMITTER AMPLIFIER STOP S(S1PIN) | . IPyys STOPS INPUT AMPLITUDE Vzy(17)2?5Vp-p (Cautions) + At AM, the auto stop is actuated to either STOP1 and 2 input and STOP3 : input. For the reason of this, STOP1 and 2 inputs shall be fixed at A "L" level when STOP3 terminal is used. (TC9147BP) For TC9146AP, if . IFqy is used, STOP input is fixed to "L" level. : 7 : + When IFzy, STOP3 terminal is not used, in order to prevent malfunctions ~\\ due to noise, etc., this terminal should be directly cornected to Vpp . terminal. - woe (1) Preset Memory -__ ow . . This is the function for tuning a desired channel by one-touch by constantly storing optional frequency data. The preset memory of : . TC9147BP is explained in the following. The preset memory of TC914GAP : will be separately explained. . | . - @ —230— ;

| TOSHIBA, ELECTRONIC G2 DE—} 9097247 DoLleo1a 2 ae . ) _ C91 46AP, PSE ER OEE OD _Q-1), Connection -of keys concerning memory (‘TC9147BP) : The terminals concerned with the memory are STO, MI~M8, MCL, and MC2, : ‘a table of 11 terminals. Inputs are all "H" level active. + STO and M1“M8 terminal are of 1/0 type with a built-in bipolar _ transistor status display driver. . + MC1 and MC2 terminals control the built-in 16 channel preset memories as shown in the following table. : Allocation of 16 channel preset memories Ty Memory addresses for 18 channels are assigned by Ml VM8 terminals : Memory addresses for 916 channels are 16 channel bo | 2 | assigned by Ml M8 terminals random menory 1 | No input is accepted. Memory allocation system holds the previous status. Automatically allocated to 8 FM channels 8 FM/AM channel and 8 AM channels, Further, at time of fixed memory AM, MW and LW band random system. system * MC1 and MC2 Inputs are of mutual resetting I/O type with an internal latch circuit. 7 (ote) MCl and MG2 terminals are of C-MOS I/O type and has no built-in driver. (a) Random memory system (109147 BP) . This is the method to use 16 channel memories at random independently : of frequency bands. * In this random memory system, frequency bands are automatically changed - according to memory read. Therefore, a push type key is used for the band selecting switch, - : (Note) When band input is placed in the locked status (a state where the key in kept pushed or in case of a lock switch), no memory, for . different band can be read. = aioe aR AUDIO DIGITAL ICs I —231— . . 4 ‘

I TOSHIBA. ELECTRONIC 2 DE FOIre4? GOLD 4 | ne TC9146AP, — : 17-05-01 ' 709147BP + when 8 memory keys are used. : . o9147BP : ero Ml M2 MS MOMS Meo MB on Moa . Ypp SXXREEEKG; : 3 - i [ero] faa] [ez] [os] [ee] Lies] [ue] [oer] [ne] | In this case, it is necessary to select memories for either channel 18 or channel 9°16 by MC1/NC2 switch prior to read/write. | + When 16 memory keys are used. , a i . . T091478P i Ml M2 “S M4 MB M6 uy us MCl «MOZ | Gotta Gaeta : DD era) (era) fees) [era] [ea Ea) ca fe F RAK IEACICICIC ICI sou, oh, 200626%2 tt : Coe) |e | OD | | ee [| se) | De] | MEMORY KEY _ reg . es L-F-4 ° EXAMPLE OF EXAMPLE OF . SaTERUINAL DIODE USED ' KEY USED - ~ ss TO SHB Assesses encase tnt . eo: —232- . j

ie TOSHIBA: ELECTRONIC O2 DEQ 909724? 0018020 Oo D - . TCS146AP, | : 1 i . a = | (b) FM/AM 8 channel fixed memory system (TC9147BP) i j ° ML M2 MS OMé MS M6 My Me =MOl «=MOZ i O©-~O-Q-O-~O-Q-@-9-O-O oF | of | of | of | o g : For European region, the memory system at AM becomes the MW and LW ' band 8 channel random system. ; (1-2) Memory Write Method | | (a) Push key. The STO display lamp illuminater and it becomes the | memory writable state. (Store state) : (b) Then, push a desired memory key. The STO lamp is turned OFF and the i assigned memory channel lamp illuminates. Now, receiving frequency ! data at the time is stored in the memory. + Unless the memory key is pushed after pushing the key, the store state is automatically released after a certain time. Store state automatic release time Typg=z““ (sec) - , foscl (If fosc1 = 20Hz, Tsro¥11sec) Further, the store state is also released when a band is changed, UP/DOWN key is pushed and the system is placed in the inhibit state. : (1-3) Memory Read Method ©. ~ - . : When a desired memory key is only pushed, that memory charmel can be read. + If a memory storing data outside the band edge is read out, that data is corrected by force to the lower band edge (when power is newly turned on). | Sac AUDIO DIGITAL ICs —233— J 4 : _ ,

TOSHIBA, ELECTRONIC O2 DEQ} 909724? 0018021 2 ) i" [ TC9146AP, OR a-06- 01 I | (2) Last Frequency Memory ' This is the Sub-Memory used at time of band changing for storing | data before the band change. At time of the band changing, write/ read is automatically executed. * The last frequency memory is capable of storing channel number of the preset memory at that time. | * When a band is changed by the preset memory read in the random memory system, the preset memory data has priority. Example of last Frequency memory operation Ts a © © © QO | ' 6. RECEIVING FREQUENCY DISPLAY (TC9147BP) - | ; . The frequency display of TC9147BP is explained here. The linear display of TC9146AP will be separately explained. Receiving frequency is | displayed using the external static display driver TC6301AP. Receiving frequency data in serially transfered to TD6301AP through DATA, i CK1 and CK2 terminals. i . + The Output timings of DATA, CK1 and CK2 terminal are shown in the following 7 diagram. . or YUU KIKX2KSXaX5KEX7 KEKONA AK Nd . | PASS A*P HAH fH 2M _ : FREQUENCY DATA 11 BITS 6 BITS . 1 OYOLE(18ms) =o"T O SHI BA s22s2ccesennnnnneccoineecommmcoinceincnminon cee meee . —234— . q : Ik

Ik. TOSHIBA, ELECTRONIC O2 Deg 404724? OO1adee 4 z

7 TCS146AP,

Ji. ° T1-05-01 | aseae OK START SIgHAL DATA Kit aX _srt 2} r i . | (1) DATA output i Frequency data and band data are serially transmitted in 16 bits. j lll bits are frequency data and 12%16 bits are band data. + Frequency Data . This is a value of receiving frequency minus the lower band edge of that band. This value is transmitted in binary 11 bits. + Band data are as shown in the table. i feel fu [ele] = 4 po [a fo fo To | ee saan sana | . Jo foo [a Joo Jo | re usasgurop bana Jo fo fo [a To | me 9 ite separation Lo fie fo fo Ta | ini to tate sepatation (2) CK1, CK2 Output . These outputs 4re timing clocks for reading DATA output by TD63014P, DATA, CK1 and CK2 outputs are transmitted by are cycle only in the following cases : + When the inhibit state is released. . . . + When a band is changed. . + When the preset memory is read. + At time of UP/DOWN tuning, - oe Sc AUDIO DIGITAL ICs: —235— q a

1 TOSHIBA, ELECTRONIC O2 DEM 909724? 0018023 & I a ] TC9146AP, © TITOSOT | Le | . (3) 50 kHz Frequency Display in FM Band for Europe The 50 kHz display in FM Band for Europe is made at 0/5 output. + At time of 50 kHz, output will become "H" level. When other areas are assigned or at time of MW and LW bands, output is fixed at "L" level. Example of Display by 7-Segment LED. - Yoo . : Poqrtscr cr _ ; efeacpda te b ud 3 LA qos1a7BP zn, emonxy “a

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7, MUTING OUTPUT . ° In order to prevent generation of abnormal sound at time of key operation, muting signal is transmitted from the MUTE terminal at the timings shown | in the following diagrams. . ! * Muting output time at time of restoration from the inhibit state or band | i switching is extended to about 2 times of that in normal cases. | i (This 1s also true when a band is changed according to the memory read { in the random memory system. ) t + When the multiple band input keys are pushed or during the fast forward- : ing or auto search tuning, muting output is kept at "H" level. . + The receiving channel (division of the programmable counter) changes 12 mS later after muting signal is transmitted. This will provide a : margin to muting application time. me (1) Manual UP/DOWN, Memory Read (2) Restoration from Inhibit status, Band Switching UEADOWN . ae ; MEUORY [ = . vu, aH, Tyore(s) tw, INH Tyrone . MUTE ns] l o 12m8 - MUTE J RECHVING : . . OHANNEL: x : i == TOS HIB A sores estes cece remanence scarcer | | ; : —236— A

te TOSHIBA, ELECTRONIC Q2 DEg#9097247 OO1ade4 4 ee 7 TC91 4GAP, ; ™9-06-09 : (3) Manual Fast Forward . : | UP, DOWN = l tT, : Oo [ wns | a es | (4) Auto Search Tuning “wr, Dom mM sm “He H MUTE . TyurE(s), AUTO BTOP SIGNAL i stop : Ture) 7 72® ~ ! : re Teer (200) (m750m8) i i Tyyrn(e) 7 = F—— (wee) (~s80m8) i 080 2 (at fogo1-20H) 8. INHIBIT FUNCTION This is the function to back up memory contents and receiving state when the power supply of a set is OFF. When the INH terminal is set at "L" level a set is placed in the inhibit state. : (1) Operation under inhibit state + Crystal oscillation is stopped and all operations will reset. . . ° * All input keys is not accept. All transistor for the drivers are turned OFF and all other outputs . are held at "L" level. . As the result of above operations, current consumption at the inhibit state is reduced extremely. Therefore, the back up by means of battery or capacitor will become possible. {iunssyomiuiastumanimwrncumcucemicommerememnrrmenomeanmnncrimn coe AUDIO DIGITAL ICs: | . —237— |

1 ; TOSHIBA, ELECTRONIC O2 a | 909724? 0018025 a TC9146AP Tost J . (Cautions) . + When the INH terminal is placed at "L" level, the programmable counter until is shifted to the inhibit state after fixing PSC output at "L" level and setting the counter internal state. At this operation is executed by using a programmable counter input signal, AMyy or FMIN input signal should be kept applied for more than 3m$ after the INH . terminal has been set at "I" level. MORE THAN Smo . FMyy OR AMyy b L__.. seocnassusue comween Somrox" ¢r473 . + When the INH terminal is set at "L" level, a series of operations is executed in the inside of LSI for shifting to the inhibit state. It is necessary to apply normal voltage (4.5%5.5V) to Vpp terminal | during this series of operations. Thereafter, Vpp can be reduced to | backup voltage (2V). | 45~55V ‘ | 40~55V | MORE THAN 10me + As mentioned above, El and E2 terminals inhibit read when the INH terminal is at "L" level, However, data read is immediately started when the INH terminal is placed at "H" level. Therefore, rise of INH input should be : delayed more than Vpp. - y, . (za, 2"Pupury | = - Yop @ Yop , | ™ im @)—+4¢ : . THE 0) IK, (B1,B2 DATA SET-UP TIME) so TOS HIB A cess seice ences mnoinmnoaneieiem icin —238— i - : : _ I

— i TOSHIBA, ELECTRONIC O2 DE) 9097247 oo1aoeb 1 : ae TC9146AP, ~ T77-08-07 ; (2) Examples of Back up Circuit . Yop" BACK UP DY panruRY ‘pp BACK UP BY CAPACITOR Vpn 6 | He Yoo @) g b | ts Ce mT @) x a @ i [| § - BH G5) +8 TH | 4 gg ts Se bey . ; d . a Shag -~ BR Tg 4B shall be connected to a fast fall power supply when the power switch of a set is turned OFF. - : : 9. PEE SOUND OUTPUT At time of key operation or during scanning, the pee sound signal for confirming the operation is output from CKl terminal. (TC9147BP) This signal is output after the timing clock signal has been output to "TD6301AP. : : . . TO947BP - ° , "tsekus(2ekHs at uwo) gz . I : “|| Prszo-enz0ra 10 Teas (H80me at fogqy~20HE) . I BUZZER . For TC9146AP, the pee sound signal is output to the pee output terminal. . vy . _ 7 TOOLAGAP 2, wen J . - 10kn . -+- Peo > . = . ymeve-sisosnio Buzzer [SSS too AUDIO DIGITAL ICs 7 . —239— ° .