Preliminary M61540FP 6ch Electronic Volume with 5 Input Selector REJ03F0117-0100Z Rev.1.0 May.31.2004 Description M61540FP is an audio signal processor for home audio. This IC contains 6 channel electronic volume, gain control, input selector and 2 band tone control. Features • Electric Volume • • • • 6 channel independent Electronic Volume with High Voltage Transistor. (0 to –99dB/1dBstep, –∞dB) 6 channel independent Gain Control (0, 6, 12, 18dB) L/R channel 5 Input Selector 6 channel Input Bass: –14 to + 14dB(2dB step), Treble: –14 to + 14dB(2dB step) Can use 2 Input for REC Output Built-in ADC out Gain Control Input Selector Multi Channel Input Tone Control • REC Output • ADC Out Recommended Operating Condition Supply Voltage Range AVCC = 7.0V(typ), AVEE = –7.0V(typ), DVDD = 3.0 to 5.5V System Block Diagram Multi Rin REC OUT (4) (5) Multi Lin Lch Tone RchTone CLOCK DATA MCU I/F I nput sel ector 1 Lch 2 3 Tone Volume Volume 1 Rch 2 3 I nput sel ector Input ATT Multi Out L Cin for ADC Multi SWin Input ATT Out R Multi for SLin ADC Multi Bass& Treble Gain Control Bass& Treble Gain Control Volume Gain Control Volume Gain Control Volume Gain Control SRin GND (4) (5) REC OUT Rev.1.0, May.31.2004, page 1 of 16 VOL GND Rout Gain Control Volume DGND Lout DVDD AVEE AVCC Cout SWout SLout SRout M61540FP Preliminary BA SR1 BA SR2 L OUT ROUT DGND CL OCK DA TA DV DD COUT SWOUT Block Diagram and Pin Configuration 20 19 18 17 16 15 14 13 12 11 MCU I/F Gain Control Gain Control DVDD 10 SLOUT BASL2 21 -+ + - 9 SROUT BASL1 22 Gain Control Bass /Tre TRER 23 Bass /Tre Gain Control Gain Control 8 AGND -+ TREL 24 Gain Control -+ -+ -+ 7 SRIN 25K 25K 25K 25K Cch Vol SWch Vol SLch Vol SRch Vol 50K Rch Vol AGND 25 6 SLIN 50K Lch Vol INR1 26 INL1 27 INR2 28 INL2 29 Logic 5 SWIN 50K 4 CIN 50K Input ATT + - 50K + - 50K 3 RIN 50K 2 LIN Input ATT + - + - 50K INR3 30 1 AGND 50K 37 38 39 40 A DCL 50K A DCR 50K AVCC A V CC 50K 50K AVEE A V EE 50K A GND 33 34 35 36 I NL 4 (RECL 1) I NR4 (RECR1) I NL 5 (RECL 2) I NR5 (RECR2) 32 I NL 3 Rch 31 (Top View) Rev.1.0, May.31.2004, page 2 of 16 Lch M61540FP Preliminary Pin Description Pin No. Name 1, 8, 25, 32 AGND Analog Ground 2 3 LIN RIN Input pin of L channel (Multi) Input pin of R channel (Multi) 4 5 CIN SWIN Input pin of C channel (Multi) Input pin of SW channel (Multi) 6 7 SLIN SRIN Input pin of SL channel (Multi) Input pin of SR channel (Multi) 9 10 SROUT SLOUT Output pin of SR channel Output pin of SL channel 11 12 SWOUT COUT Output pin of SW channel Output pin of C channel 13 14 DVDD DATA Power supply to internal logic circuit Input pin of control data 15 16 CLOCK DGND Input pin of control clock Ground of internal logic circuit 17 18 ROUT LOUT Output pin of R channel Output pin of L channel 19, 20 21, 22 BASR1, BASR2 BASL1, BASL2 Frequency characteristic setting pin of R channel tone control (BASS) Frequency characteristic setting pin of L channel tone control (BASS) 23 24 TRER TREL Frequency characteristic setting pin of R channel tone control (Treble) Frequency characteristic setting pin of L channel tone control (Treble) 26, 28, 30 27, 29, 31 INR1, 2, 3 INL1, 2, 3 Input pin of R channel (Input Selector) Input pin of L channel (Input Selector) 33, 35 34, 36 INL4, 5/ RECL1, 2 INR4, 5/ RECR1, 2 Input pin of L channel (Input Selector) can use REC output pin Input pin of R channel (Input Selector) can use REC output pin 37 38 AVEE AVCC Negative power supply to internal analog circuit Positive power supply to internal analog circuit 39, 40 ADCR, ADCL Output pin for ADC Rev.1.0, May.31.2004, page 3 of 16 Function M61540FP Preliminary Absolute Maximum Ratings Parameter Symbol Ratings Unit Condition Power Supply Supply Voltage 16 V AVCC-AVEE Power dissipation Pd 6 1.46 W DVDD-DGND Ta≤25°C Thermal derating Operating temperature K Topr 85.3 –20 to +75 mW/°C °C Storage temperature Tstg –40 to +125 °C Ta>25°C Note: AVEE≤DGND<DVDD≤AVCC THERMAL DERATINGS (MAXIMUM RATING) POWER DI SSI PA TI ON pd (W) 2.0 1.46W 1.5 1.0 0.88 0.5 0 0 25 50 75 100 125 150 AMBIENT TEMPERATURE Ta ( °C ) Recommended Operating Conditions (Ta=25°C, unless otherwise noted.) Parameter Symbol Min Typ Max Unit Analog Supply Voltage (Positive) AVCC 4.5 7.0 7.5 V Analog Supply Voltage (Negative) AVEE −7.5 −7.0 −4.5 V Digital Supply Voltage Logic “H” level Input Voltage DVDD VIH 3.0 DVDD×0.7 3.3 5.5 DVDD V V DGND reference Logic “L” level Input Voltage VIL DGND DVDD×0.2 V DGND reference Note: AVEE≤DGND<DVDD≤AVCC Rev.1.0, May.31.2004, page 4 of 16 Condition M61540FP Preliminary Relationship Between Data and Clock Make "H" at the timing which DATA of D0-D23 make latch. Data signal is read at the rising edge of CLOCK. DATA D0 D2 D1 D21 D3 D23 D22 CLOCK When DATA is "H", latch signal is created at the falling edge of CLOCK. Clock and Data Timings (D0 to D23) LATCH t cr DATA 75% 25% tSLD tSLD tHLD tSHD tHHD tHLD tSC 75% 50% 25% CLOCK tf tr tWHC tWLC Timing Definition of Digital Block Limits Parameter Symbol Min Typ Max CLOCK cycle time tcr 8 CLOCK pulse width ("H" level) CLOCK pulse width ("L" level) tWHC tWLC 3.2 3.2 Rising time of clock and data Falling time of clock and data tr tf 0.8 0.8 DATA setup time (Rising time of clock) DATA setup time (Falling time of clock) tSHD tSLD 1.6 1.6 DATA hold time ("H" level) DATA hold time ("L" level) tHHD tHLD 1.6 1.6 CLOCK setup time tSC 1.6 Rev.1.0, May.31.2004, page 5 of 16 Unit µs M61540FP Preliminary Power on Reset This IC built-in the power on reset function. The voltage of DVDD (13 pin) -DGND (16 pin) less than 2.6V, the serial DATA can not accept. DVDD(3pin) - DGND(6pin) (V) 2.6V (S) Reset time After reset is canceled, the serial DATA can accept. Release of reset. Note: AVEE≤DGND<DVDD≤AVCC Data Control Specification Initialize all data of the 4 formats when Digital Power supply (DVDD) turns on. Prohibit using except specified Data code as follows. Slot1 D0a D1a D2a (1) Input Selector D3a D4a D5a (2) REC Output D6a (3) ADC Input ATT D7a D8a (4) L/R Vol Input D9a D10a D11a D12a D13a D14a D15a D16a D17a D18a D19a D20a D21a D22 (5) Bass/ Tone control Bypass (6) Treble 0 0 0 0 0 0 0 D23 0 Slot2 D0b D1b D2b D3b D4b D5b D6b D7b D8b D9b D10b D11b D12b D13b D14b D15b D16b D17b D18b D19b D20b D21b D22 D23 (7) Lch Gain Control (7) Rch Gain Control (8) Lch Volume (8) Rch Volume 0 0 0 0 0 1 Slot3 D0c D1c D2c (7) Cch Gain Control D3c D4c D5c D6c D7c (8) Cch Volume D8c D9c D10c D11c D12c D13c D14c D15c D16c D17c D18c D19c D20c D21c D22 (7) SWch Gain Control (8) SWch Volume 0 0 0 0 1 D23 0 Slot4 D0d D1d D2d D3d D4d D5d D6d D7d D8d D9d D10d D11d D12d D13d D14d D15d D16d D17d D18d D19d D20d D21d D22 D23 (7) SLch Gain Control Note: (8) SLch Volume (7) SRch Gain Control No guarantee except for these codes. Rev.1.0, May.31.2004, page 6 of 16 (8) SRch Volume 0 0 0 0 1 1 M61540FP Preliminary Setting Code It’s initial setting when power is turned on. (1) Input Selector Setting D0a D1a D2a ALL OFF IN1 0 0 0 1 0 0 IN2 IN3 1 1 0 1 0 0 IN4* IN5* 0 0 0 1 1 1 Note: *No guarantee except for these codes. (2) REC Output REC Output REC1 REC2 Setting D3a D4a OFF ON 0 1*1 0 1*2 *1: When IN4 selected, REC1 can not use. IN4 REC1 D0a D1a D2a D3a ON 1 OFF 0 0 1 *2: When IN5 selected, REC2 can not use. IN5 REC2 D0a D1a D2a D4a ON 1 OFF 0 1 (3) ADC Input ATT ATT Setting D5a D6a 0dB –6dB 0 0 0 1 –12dB –18dB 1 1 0 1 (4) L/R Volume Input Setting D7a Selector In Multi In 0 1 Rev.1.0, May.31.2004, page 7 of 16 1 M61540FP Preliminary It’s initial setting when power is turned on. (6) Treble (5) Bass/Bypass ATT Setting D8a D9a D10a D11a +14dB +12dB 1 1 1 1 1 1 1 0 +10dB +8dB 1 1 1 1 0 0 +6dB +4dB 1 1 0 0 +2dB 0dB 1 1 −2dB −4dB D12a D13a D14a D15a +14dB +12dB 1 1 1 1 1 1 1 0 1 0 +10dB +8dB 1 1 1 1 0 0 1 0 1 1 1 0 +6dB +4dB 1 1 0 0 1 1 1 0 0 0 0 0 1 0 +2dB 1 0 0 1 0dB 1/0 0 0 0 0 0 0 0 0 1 1 0 −2dB 0 0 0 1 −6dB −8dB 0 0 0 1 1 0 1 0 −4dB −6dB 0 0 0 0 1 1 0 1 −10dB −12dB 0 0 1 1 0 1 1 0 −8dB −10dB 0 0 1 1 0 0 0 1 −14dB 0 1 1 1 −12dB −14dB 0 0 1 1 1 1 0 1 Bypass*3 0 0 0 0 *3: Tone control is bypass. (7) Gain Control Lch Rch D0b D9b D1b D10b Cch SWch D0c D9c D1c D10c SLch SRch D0d D9d D1d D10d 0dB 6dB 0 0 0 1 12dB 18dB 1 1 0 1 ATT Setting Rev.1.0, May.31.2004, page 8 of 16 ATT Setting M61540FP Preliminary (8) 6ch Volume It’s initial setting when power is turned on. ATT Lch Rch D2b D11b D3b D12b D4b D13b D5b D14b D6b D15b D7b D16b D8b D17b Cch SWch D2c D11c D3c D12c D4c D13c D5c D14c D6c D15c D7c D16c D8c D17c SLch SRch D2d D11d D3d D12d D4d D13d D5d D14d D6d D15d D7d D16d D8d D17d 0dB 0 0 0 0 0 0 0 –1dB –2dB 0 0 0 0 0 0 0 0 0 0 0 1 1 0 –3dB –4dB 0 0 0 0 0 0 0 0 0 1 1 0 1 0 –5dB –6dB 0 0 0 0 0 0 0 0 1 1 0 1 1 0 –7dB –8dB 0 0 0 0 0 0 0 1 1 0 1 0 1 0 –9dB –10dB 0 0 0 0 0 0 1 1 0 0 0 1 1 0 –11dB –12dB 0 0 0 0 0 0 1 1 0 1 1 0 1 0 –13dB –14dB 0 0 0 0 0 0 1 1 1 1 0 1 1 0 –15dB –16dB 0 0 0 0 0 1 1 0 1 0 1 0 1 0 –17dB –18dB 0 0 0 0 1 1 0 0 0 0 0 1 1 0 –19dB –20dB 0 0 0 0 1 1 0 0 0 1 1 0 1 0 –21dB –22dB 0 0 0 0 1 1 0 0 1 1 0 1 1 0 –23dB –24dB 0 0 0 0 1 1 0 1 1 0 1 0 1 0 –25dB –26dB 0 0 0 0 1 1 1 1 0 0 0 1 1 0 –27dB –28dB 0 0 0 0 1 1 1 1 0 1 1 0 1 0 –29dB –30dB 0 0 0 0 1 1 1 1 1 1 0 1 1 0 –31dB –32dB 0 0 0 1 1 0 1 0 1 0 1 0 1 0 –33dB –34dB 0 0 1 1 0 0 0 0 0 0 0 1 1 0 –35dB –36dB 0 0 1 1 0 0 0 0 0 1 1 0 1 0 –37dB –38dB 0 0 1 1 0 0 0 0 1 1 0 1 1 0 –39dB –40dB 0 0 1 1 0 0 0 1 1 0 1 0 1 0 Rev.1.0, May.31.2004, page 9 of 16 M61540FP Preliminary Lch Rch D2b D11b D3b D12b D4b D13b D5b D14b D6b D15b D7b D16b D8b D17b Cch SWch D2c D11c D3c D12c D4c D13c D5c D14c D6c D15c D7c D16c D8c D17c SLch SRch D2d D11d D3d D12d D4d D13d D5d D14d D6d D15d D7d D16d D8d D17d –41dB –42dB 0 0 1 1 0 0 1 1 0 0 0 1 1 0 –43dB –44dB 0 0 1 1 0 0 1 1 0 1 1 0 1 0 –45dB –46dB 0 0 1 1 0 0 1 1 1 1 0 1 1 0 –47dB –48dB 0 0 1 1 0 1 1 0 1 0 1 0 1 0 –49dB –50dB 0 0 1 1 1 1 0 0 0 0 0 1 1 0 –51dB –52dB 0 0 1 1 1 1 0 0 0 1 1 0 1 0 –53dB –54dB 0 0 1 1 1 1 0 0 1 1 0 1 1 0 –55dB –56dB 0 0 1 1 1 1 0 1 1 0 1 0 1 0 –57dB –58dB 0 0 1 1 1 1 1 1 0 0 0 1 1 0 –59dB –60dB 0 0 1 1 1 1 1 1 0 1 1 0 1 0 –61dB –62dB 0 0 1 1 1 1 1 1 1 1 0 1 1 0 –63dB –64dB 0 1 1 0 1 0 1 0 1 0 1 0 1 0 –65dB –66dB 1 1 0 0 0 0 0 0 0 0 0 1 1 0 –67dB –68dB 1 1 0 0 0 0 0 0 0 1 1 0 1 0 –69dB –70dB 1 1 0 0 0 0 0 0 1 1 0 1 1 0 –71dB –72dB 1 1 0 0 0 0 0 1 1 0 1 0 1 0 –73dB –74dB 1 1 0 0 0 0 1 1 0 0 0 1 1 0 –75dB –76dB 1 1 0 0 0 0 1 1 0 1 1 0 1 0 –77dB –78dB 1 1 0 0 0 0 1 1 1 1 0 1 1 0 –79dB –80dB 1 1 0 0 0 1 1 0 1 0 1 0 1 0 –81dB –82dB 1 1 0 0 1 1 0 0 0 0 0 1 1 0 –83dB –84dB 1 1 0 0 1 1 0 0 0 1 1 0 1 0 ATT Rev.1.0, May.31.2004, page 10 of 16 M61540FP Preliminary Lch Rch D2b D11b D3b D12b D4b D13b D5b D14b D6b D15b D7b D16b D8b D17b Cch SWch D2c D11c D3c D12c D4c D13c D5c D14c D6c D15c D7c D16c D8c D17c SLch SRch D2d D11d D3d D12d D4d D13d D5d D14d D6d D15d D7d D16d D8d D17d –85dB –86dB 1 1 0 0 1 1 0 0 1 1 0 1 1 0 –87dB –88dB 1 1 0 0 1 1 0 1 1 0 1 0 1 0 –89dB –90dB 1 1 0 0 1 1 1 1 0 0 0 1 1 0 –91dB –92dB 1 1 0 0 1 1 1 1 0 1 1 0 1 0 –93dB –94dB 1 1 0 0 1 1 1 1 1 1 0 1 1 0 –95dB –96dB 1 1 0 1 1 0 1 0 1 0 1 0 1 0 –97dB –98dB 1 1 1 1 0 0 0 0 0 0 0 1 1 0 –99dB –∞dB 1 1 1 1 0 1/0 0 1/0 0 1 1 1/0 1 1/0 ATT Note: No guarantee except for these codes. Electrical Characteristics Unless otherwise noted, Ta = 25°C, AVCC = 7V, AVEE = –7V, DVDD = 5V, f = 1kHz, Volume = 0dB, Input Selector = IN1, Gain Control = 0dB, ADC Input ATT = 0dB, Tone = Bypass (1) Power supply characteristics Limits Parameter Symbol Min Typ Max Unit Test condition Analog positive power circuit current AIcc 32 42 mA With AVCC = 7V and AVEE = –7V 38pin current, when no signal is provided Analog negative power circuit current AIee –42 –32 mA With AVCC = 7V and AVEE = –7V 37pin current, when no signal is provided Digital power circuit current DIdd 2 3 mA With DVDD = 3.3V, 13pin current, when no signal is provided Rev.1.0, May.31.2004, page 11 of 16 M61540FP Preliminary (2) Input/Output characteristics (OVER ALL) Limits Parameter Symbol Min Typ Max Unit Input resistance Maximum output voltage Rin VOM 17 3.8 25 4.4 33 — Ω 2 to 7, 26, 27 pin Vrms 2 to 7pin input, 9 to 12,17,18pin output, THD = 1%, RL = 10kΩ, Output Gain Control = +6dB Pass gain Gv –2.0 0 2.0 dB Total harmonic distortion THD1 — 0.002 0.008 % THD2 0.01 0.1 Balance of CBAL mutual channels –0.5 0 0.5 dB Output noise voltage 1 5 3 15 µVrms JIS-A, Rg = 0Ω, 17,18pin output, Vono2 1.5 7.2 Vono3 SS1 Selector separation Channel separation Vono1 Test condition 2 to 7,26,27 pin input, 9 to 12,17,18pin output, Vi = 0.3Vrms, FLAT 2 to 7pin input, 9 to12, 17,18 pin output, BW: 400Hz to 30kHz, f = 1kHz, Vo = 0.3Vrms, RL=10kΩ 2 to 7pin input, 9 to 12, 17,18pin output, BW: 400Hz to 30kHz, f = 1kHz, Vo = 2Vrms, RL = 10kΩ 26,27pin input, 17,18pin output, Vi = 0.3Vrms Volume = –∞dB setting Output Gain Control = 0dB Output Gain Control = +12dB 4.5 22 JIS-A, Rg = 0Ω, 17,18pin output, Volume = 0dB setting Output Gain Control = 0dB Output Gain Control = +12dB 1 5 3 15 JIS-A, Rg = 0Ω, 9 to 12pin output, Output Gain Control = 0dB Volume = 0dB setting Output Gain Control = +12dB — –90 –70 SS2 — –90 –70 < Multi Input Selector > Vo = 1Vrms, Rg = 0Ω, RL = 10kΩ, JIS-A CS — –90 –70 Vo = 1Vrms, Rg = 0Ω, RL = 10kΩ, JIS-A < Input Selector> Vo = 1Vrms, Rg = 0Ω, RL = 10kΩ, JIS-A dB (3) 6 channel Volume characteristics Limits Parameter Symbol Min Typ Maximum attenuation ATTmax — –100 –95 Volume gain gang error of mutual channels Dvol –0.5 0 Max Unit Test condition dB Vi = 2Vrms, JIS-A, VOL = –∞dB +0.5 dB Volume = 0dB (4) Tone control characteristics Unless otherwise noted, Tone ON/OFF = ON Limits Parameter Symbol Min Typ Max Unit Test condition Tone control voltage gain (Boost/Bass) Tone control voltage gain (Cut/Bass) G (BASS) B +12 +14 +16 dB G (BASS) C –16 –14 –12 dB f = 100Hz Bass +14dB setting f = 100Hz Bass –14dB setting Tone control voltage gain (Boost/Treble) Tone control voltage gain (Cut/Treble) G (TRE) B +12 +14 +16 dB G (TRE) C –16 –14 –12 dB Balance of mutual channels BALT –2 0 +2 dB Rev.1.0, May.31.2004, page 12 of 16 f = 10kHz Treble +14dB setting f = 10kHz Treble –10dB setting Bass setting +14, –14dB Treble setting +14, –14dB M61540FP Preliminary Tone Control (1) Bass < Boost > + IN R3 OUT + R2 1 f0 = C1 0.047µ 2 π R1(R2+R3)C1C2 (Hz) (R2+R3)R1C1C2 C2 0.15µ Q= R1 4.7K R1(C1+C2)+R3C1 Gv = 20 log R1(C1+C2)+(R2+R3)C1 R1(C1+C2)+R3C1 < Cut > + IN + R2 f0 = 1 2 π R1(R2+R3)C1C2 C2 0.15 µ (Hz) R1(C1+C2)+R3C1 Gv = 20 log R1(C1+C2)+R3C1 R1(C1+C2)+(R2+R3)C1 Rev.1.0, May.31.2004, page 13 of 16 C1 0.047µ R1 4.7K (R2+R3)R1C1C2 Q= R3 (dB) OUT (dB) M61540FP Preliminary (2) Treble < Boost > - + IN OUT + R5 Gv =20 log R4 RC (R4+R5)2+ RC2 2 (dB) 2 R4 +RC 0.022µ <Cut > + IN 2 R5 - + OUT Gv =20 log 0.022 µ Tone gain Gv (dB) Curve of characteristics Frequency f(Hz) Rev.1.0, May.31.2004, page 14 of 16 2 (R4+R5) + RC R4 RC 2 R4 +RC (dB) 2 M61540FP Preliminary Application Example L R 4.7µ 4.7µ DVDD 5V C SW 4.7K 0.047µ 0.15µ 4.7µ MCU 4.7µ 100µ 0.1 µ 20 19 18 17 0.15µ 15 14 MCU I/F Gain Control Gain Control 0.047µ 4.7K 16 13 12 11 DVDD 21 22 Gain Control Bass /Tre 24 Bass /Tre Gain Control Gain Control Gain Control -+ -+ -+ 7 25K 25K 25K 25K Cch Vol SWch Vol SLch Vol SRch Vol 50K Rch Vol 25 6 50K Lch Vol 2.2 µ Logic 5 50K 2.2 µ 27 4 50K 2.2 µ INR2 28 Input ATT + - 50K + - 2.2µ INL2 29 50K Input ATT + - + - 50K 50K 3 2 2.2 µ INR3 SR 8 -+ 0.022 µ INL1 4.7µ 9 23 26 SL -+ +- 0.022µ INR1 4.7 µ 10 1 30 50K 50K 50K 50K 50K 50K AVEE AVCC 37 38 Rch Rev.1.0, May.31.2004, page 15 of 16 35 2.2 µ 2.2µ 36 39 Lch 40 2.2 µ 100µ 0.1µ100 µ 0.1µ I NR5 (RECR2) 2.2µ 34 I NL 5 (RECL 2) I NL 3 2.2µ 33 I NR4 (RECR1) 32 I NL 4 (RECL 1) 31 AVEE AVCC 7V -7V ADC 2.2µ SRIN 2.2µ 2.2 µ 2.2µ 2.2µ 2.2 µ SLIN SWIN CIN RIN LIN M61540FP Preliminary Package Dimensions As of January, 2003 20 40 11 0.13 0.575 0.10 *Dimension including the plating thickness Base material dimension Rev.1.0, May.31.2004, page 16 of 16 M *0.17 ± 0.05 0.15 ± 0.04 10 1.40 1.70 Max 1 *0.25 ± 0.05 0.22 ± 0.04 0.09 0.13+– 0.05 9.0 ± 0.2 31 0.65 Unit: mm 9.0 ± 0.2 7.0 30 21 1.0 0.575 0° – 8° 0.50 ± 0.10 Package Code JEDEC JEITA Mass(reference value) FP-40B — Conforms 0.2 g Sales Strategic Planning Div. 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