MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor 4 Stereo Inputs and 2 Channels Output Volume, Tone, Balance, Loudness and Selectable Input Gain FEATURES APPLICATIONS ‧Operation range : 2.7V~5V ‧4 stereo inputs with selectable input gain ‧2 independent speaker controls for balance ‧Tone controls (treble and bass) ‧Loudness and independent mute function ‧Volume control in 1.25 dB/step ‧I2C interface ‧Components less and good PSRR ‧Housed in SOP28, SSOP28 package ‧Portable audio device ‧Car stereo audio ‧Hi-Fi audio system ‧Cross-reference: PT2314 DESCRIPTION The MS6714 is a 4 stereo inputs/2-channel outputs digital control audio processor for the low voltage operation. Volume, tone (bass and treble), and balance (left/right) processor are incorporated into a single chip. The MS6714 also has the loudness function and selectable input gain. These functions can be built a Hi-Fi audio system easily. All functions are programmable via the serial I2C bus. The default states of the chip as the power is on are: the volume is -78.75dB, the stereo 4 is selected, all the speakers are mute and the gains of the input stage, the bass and the treble are 0dB. BLOCK DIAGRAM LOUT 18 LIN LOUD_L BOUT_L BIN_L 17 12 20 19 TREB_L 3 RB LIN1 LIN2 LIN3 LIN4 RIN4 RIN3 RIN2 RIN1 16 15 14 13 Volume & Londness Input Selector & Gain Control 8 9 10 11 Mute 24 OUT_L Bass Treble Speaker ATT 27 SCL 26 SDA 25 DGND Serial Bus Decoder and Latches Volume & Londness Bass Treble Speaker ATT 23 OUT_R Mute RB Supply 1 2 28 6 AVDD AGND REF ROUT REV1.0 5 7 22 21 RIN LOUD_R BOUT_R BIN_R 1 4 TREB_R www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor PIN CONFIGURATION Symbol VDD AGND TREB_L TREB_R RIN ROUT LOUD_R RIN4 RIN3 RIN2 RIN1 LOUD_L LIN4 LIN3 LIN2 LIN1 LIN LOUT BIN_L BOUT_L BIN_R BOUT_R OUT_R OUT_L DGND SDA Pin 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 Description Supply Input Voltage Analog Ground Left Channel Input for Treble Controller Right Channel Input for Treble Controller Audio Processor Right Channel Input Gain Output and Input Selector for Right Channel Right Channel Loudness Input Right Channel Input 4 Right Channel Input 3 Right Channel Input 2 Right Channel Input 1 Left Channel Loudness Input Left Channel Input 4 Left Channel Input 3 Left Channel Input 2 Left Channel Input 1 Audio Processor Left Channel Input Gain Output and Input Selector for Left Channel Left Bass Controller Input Channel Left Bass Controller Output Channel Right Bass Controller Input Channel Right Bass Controller Output Channel Right Speaker Output Left Speaker Output Digital Ground I2C Data Input SCL REF 27 28 I2C Clock Input Analog Reference Voltage（1/2VDD） REV1.0 2 VDD 1 28 REF AGND 2 27 SCL TREB_L 3 26 SDA TREB_R 4 25 DGND RIN 5 24 OUT_L ROUT 6 23 OUT_R LOUD_R 7 MS6714 22 BOUT_R RIN4 8 21 BIN_R RIN3 9 20 BOUT_L RIN2 10 19 BIN_L RIN1 11 18 LOUT LOUD_L 12 17 LIN LIN4 13 16 LIN1 LIN3 14 15 LIN2 SOP28 / SSOP28 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor ORDERING INFORMATION Package Part number Packaging Marking Transport Media 28-Pin SOP (lead free) MS6714GTR MS6714G 1k Units Tape and Reel 28-Pin SOP (lead free) MS6714GU MS6714G 25 Units Tube 28-Pin SSOP (lead free) MS6714SSGTR MS6714G 2.5k Units Tape and Reel 28-Pin SSOP (lead free) MS6714SSGU MS6714G 50 Units Tube ABSOLUTE MAXIMUM RATINGS Symbol Parameter VDD Supply Voltage VESD Electrostatic Handling TSTG Storage Temperature Range TA Operating Ambient Temperature Range TJ Rating Unit 6 V -3000 to 3000 -65 to 150 V ℃ -40 to 85 ℃ Maximum Junction Temperature 150 ℃ TS Soldering Temperature, 10 seconds 260 ℃ RTHJA Thermal Resistance from Junction to Ambient in Free Air SOP28 SSOP28 210 210 ℃/W OPERATING RATINGS Symbol VDD REV1.0 Parameter Supply Voltage 3 Min Typ Max Unit 2.7 - 5.5 V www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor 5V ELECTRICAL CHARACTERISTICS (Ta=25℃, All stages 0dB, f=1kHz, CREF =22uF, refer to the application circuit; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit Supply IQ Quiescent Current VIN=0V - 12.2 12.5 mA PSRR Power Supply Rejection Ratio CREF = 22uF, f = 100Hz 55 60 - dB Input Selectors RIN Input Resistance Input 1,2,3,4 35 50 70 kΩ GIN Input Gain Range Gain 0 - 11.25 dB GSTEP Step Resolution - 3.75 - dB ERRG Gain Setting error -0.2 0 0.2 dB LOUD Loudness 19 20 - dB -78.75 - 0 dB - 1.25 - dB Av = 0 to -40dB -1 0 0.5 dB Av = -40 to -60dB -5 0 1 dB -37.5 - 0 dB CLoud=100nF, f =20Hz Volume=-40dB Volume control CRVOL Volume Control Range RESVOL Volume Step Resolution ERRVOL Volume Setting Error Attenuation Speaker Attenuators CRSPK Speaker Control Range RESSPK Speaker Step Resolution ERRSPK Speaker Setting Error MUTE Output Mute Attenuation Attenuation - 1.25 - dB -0.2 0 0.1 dB - -65 -60 dB Boost/Cut -14 - 14 dB - 2 - dB f =100Hz -0.3 0 0.1 34 44 58 dB kΩ Boost/Cut -14 - 14 dB - 2 - dB -0.3 0 0.1 dB - 4.5 -75 0.0177 97 - Vpp dB % dB 93 97 - dB Bass Control CRBAS Bass Control Range RESBAS Bass Step Resolution ERRBAS Speaker Setting Error RB Internal Feedback Resistance B Treble Control CRBAS Treble Control Range RESBAS Treble Step Resolution ERRBAS Treble Setting Error f =20kHz VOMAX Maximum Output Voltage Swing (THD+N)/S <0.3% THD+N Total Harmonic Distortion Plus Noise VOUT=2Vpp S/N Signal-to-Noise Ratio VOUT=4Vpp CS Channel Separation Left/Right General Bus Input VIH Bus High Input Level 2 - - V VIL Bus Low Input Level - - 0.8 V Notes: Bass and Treble response see to curve. The center frequency and quality of the response behavior can be chosen by the external. REV1.0 4 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor 2.7V ELECTRICAL CHARACTERISTICS (Ta=25℃, All stages 0dB, f=1kHz, CREF =22uF, refer to the application circuit; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit Supply IQ Quiescent Current VIN=0V PSRR Power Supply Rejection Ratio CREF = 22uF, f = 100Hz VOMAX Maximum Output Voltage Swing (THD+N)/S <0.3% THD+N Total Harmonic Distortion Plus Noise VOUT=2Vpp S/N Signal-to-Noise Ratio VOUT=2.5Vpp CS Channel Separation Left/Right - 8.7 9 mA 53 58 - dB - 2.5 -50 - Vpp dB General - 0.3 - % 90 94 - dB 90 94 - dB TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25℃, All stages 0dB, f=1kHz, CREF =22uF, refer to the application circuit; unless otherwise specified) VDD=5V Volume=-40dB VDD=5V Loud (dB) Loud (dB) Loud (dB) 100nF OPEN 33nF 10nF 220nF Loudness OFF 56nF VDD=5V CLOUD = 100nF Loudness vs. Volume Loudness vs. Frequency vs. Volume Loudness vs. External Capacitors VDD=5V Treble=Bass= -14~14dB REV1.0 VDD=2.7V VIN=-3dBV VDD=5V VIN=0dBV QUIESCENT CURRENT (mA) FREQUENCY (Hz) CHANNEL SEPARATION (dB) FREQUENCY (Hz) Tone (dB) FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) SUPPLY VOLTAGE (V) Typical Tone Response Channel Separation vs. Frequency Quiescent Current vs. Supply Voltage 5 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor VDD=2.7V VO=2Vpp THD+N (%) THD+N (%) THD+N (%) f=1kHz f=20kHz f=20Hz f=20kHz f=1kHz VDD=5V VO=2Vpp VDD=5V VDD=2.7V FREQUENCY (Hz) OUTPUT VOLTAGE (dBV) OUTPUT VOLTAGE (dBV) THD+N vs. Frequency THD+N vs. Output Voltage THD+N vs. Output Voltage CAP=22uF CAP=10uF VDD=5V VRR=-20dBV PSRR (dB) PSRR (dB) CAP=22uF REV1.0 f=20Hz CAP=10uF VDD=2.7V VRR=-20dBV FREQUENCY (Hz) FREQUENCY (Hz) PSRR vs. Frequency PSRR vs. Frequency 6 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor I2C BUS DESCRIPTION Start and Stop Conditions A start condition is activated when the SCL is set to HIGH and SDA shifts from HIGH to LOW state. The stop condition is activated when SCL is set to HIGH and SDA shifts from LOW to HIGH state. Please refer to the timing diagram below. SCL SDA Stop Start SCL : Serial Clock Line, SDA : Serial Data Line Data Validity A data on the SDA line is considered valid and stable only when the SCL signal is in HIGH state. The HIGH and LOW states of the SDA line can only change when the SCL signal is LOW. Please refer to the figure below. SDA SCL Data line stable, Data valid Data change allowed Byte Format Every byte transmitted to the SDA line consists of 8 bits. Each byte must be followed by an acknowledge bit. The MSB is transmitted first. Acknowledge During the Acknowledge clock pulse, the master (up) put a resistive HIGH level on the SDA line. The peripheral (audio processor) that acknowledges has to pull-down (LOW) the SDA line during the Acknowledge clock pulse so that the SDA line is in a stable LOW state during this clock pulse. Please refer to the diagram below. SCL 1 2 3 7 8 9 SDA MSB Acknowledge Start The audio processor that has been addressed has to generate an Acknowledge after receiving each byte, otherwise, the SDA line will remain at the HIGH level during the ninth (9th) clock pulse. In this case, the master transmitter can generate the STOP information in order to abort the transfer. REV1.0 7 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor Timing of SDA and SCL Bus Lines SDA tf tLOW SCL S tHD;STA tSU;DAT tr tHD;DAT Standard Mode Symbol fSCL tHD;STA tf tHIGH tSU;STA tSP tSU;STO Sr Parameter tBUF tr P S Min Max Unit 0 100 kHz 4.0 - us tLOW SCL clock frequency Hold time (repeated) START condition. After this period, the first clock pulse is generated LOW period of the SCL clock 4.7 - us tHIGH HIGH period of the SCL clock 4.0 - us tSU:STA 4.7 - us 0 3.45 us tSU:DAT Set-up time for a repeated START condition Data hold time: For I2C-bus devices Data-set-up time 250 - ns tr Rise time of both SDA and SCL signals - 1000 ns tf Fall time of both SDA and SCL signals - 300 ns tSU:STO Set-up time for STOP condition 4.0 - us tBUF Bus free time between a STOP and START condition 4.7 - us Cb Capacitive load for each bus line - 400 pF VnL Noise margin at the LOW level for each connected device (including 0.1VDD hysteresis) - V VnH Noise margin at the HIGH level for each connected device (including 0.2VDD hysteresis) - V tHD:STA tHD:DAT BUS INTERFACE Data are transmitted to and from the MCU to the MS6714 via the SDA and SCL. The SDA and SCL make up the BUS interface. It should be noted that pull-up resistors must be connected to the positive supply voltage. VDD Rp Rp Pull up resistors SDA (Serial Data Line) SCL (Serial Clock Line) MCU REV1.0 MS6714 8 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor Interface Protocol The format consists of the following ‧A START condition ‧A chip address byte including the MS6714 address. (7bits) ‧The 8th bit of the byte must be “0”.(write=0, read=1) ‧MS6714 must always acknowledge the end of each transmitted byte. ‧A data sequence (N-bytes + Acknowledge) ‧A STOP condition SDA SCL 1-7 8 ADDRESS W R / -- 9 1-7 8 9 1-7 8 9 S P START CONDITION ACK DATA ACK DATA ACK STOP CONDITION Address Code The chip address of the MS6714 is 88H. 1 0 0 0 1 0 0 0 7 bits address W MS6714 address Data Bytes Description The default states of the chip as the power is on are: the volume is -78.75dB, the stereo 4 is selected, all the speakers are mute and the gains of the input stage, the bass and the treble are 0dB. MSB LSB Function Volume Control 0 0 B2 B1 B0 A2 A1 A0 1 1 0 B1 B0 A2 A1 A0 Speaker ATT L 1 1 1 B1 B0 A2 A1 A0 Speaker ATT R 0 1 0 G1 G0 S2 S1 S0 Audio Switch 0 1 1 0 C3 C2 C1 C0 Bass Control 0 1 1 1 C3 C2 C1 C0 Treble Control Where Ax = 1.25dB steps; Bx = 10dB steps; Cx = 2dB steps; Gx = 3.75dB steps REV1.0 9 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor Volume MSB 0 0 0 0 B2 B1 B0 LSB Function A2 A1 A0 Volume 1.25 dB steps 0 0 0 0 0 0 1 -1.25 0 1 0 -2.5 0 1 1 -3.75 1 0 0 -5 1 0 1 -6.25 1 1 0 -7.5 1 1 1 -8.75 A2 A1 A0 Volume 10dB steps B2 B1 B0 0 0 0 0 0 0 1 -10 0 1 0 -20 0 1 1 -30 1 0 0 -40 1 0 1 -50 1 1 0 -60 1 1 1 -70 The default volume is –78.75dB. Speaker Attenuator MSB LSB Function（dB） 1 1 0 B1 B0 A2 A1 A0 Speaker ATT L 1 1 1 B1 B0 A2 A1 A0 Speaker ATT R 0 0 0 0 0 0 1 -1.25 0 1 0 -2.5 0 1 1 -3.75 1 0 0 -5 1 0 1 -6.25 1 1 0 -7.5 1 1 1 -8.75 0 0 0 0 1 -10 1 0 -20 1 1 -30 1 1 1 1 1 Mute LF: Left Front, RF: Right Front, LR: Left Rear, RR: Right Rear The default state is mute. REV1.0 10 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor Audio Switch MSB 0 1 0 G1 0 G0 S2 LSB Function S1 S0 Audio Switch 0 0 Stereo 1 0 1 Stereo 2 1 0 Stereo 3 1 1 Stereo 4 0 Loudness ON 1 Loudness OFF 0 +11.25dB 0 1 +7.5dB 1 0 +3.75dB 1 1 0dB The default state is stereo 4, loudness off and gain 0dB. Bass and Treble MSB LSB Function（dB） 0 1 1 0 C3 C2 C1 C0 Bass 0 1 1 1 C3 C2 C1 C0 Treble 0 0 0 0 -14 0 0 0 1 -12 0 0 1 0 -10 0 0 1 1 -8 0 1 0 0 -6 0 1 0 1 -4 0 1 1 0 -2 0 1 1 1 0 1 0 0 0 0 1 0 0 1 2 1 0 1 0 4 1 0 1 1 6 1 1 0 0 8 1 1 0 1 10 1 1 1 0 12 1 1 1 1 14 The default state is bass 0dB and treble 0dB. REV1.0 11 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor Examples Set Volume at –37.5dB. MSB Start Data byte LSB MS6714 Address ACK 0 0 0 1 1 1 -30dB 1 0 ACK Stop 0 ACK Stop 1 1 ACK Stop 0 1 ACK Stop ACK Stop -7.5dB Set Speaker Right at –30dB. MSB Start Data byte LSB MS6714 Address ACK 1 1 1 1 Speaker R 1 0 -30dB 0 0dB Set Speaker Left in mute-on. MSB Start Data byte LSB MS6714 Address ACK 1 1 0 1 1 Speaker L 1 Mute Set Stereo 2 Input with gain of +7.5 dB and Loudness on. MSB Start Data byte LSB MS6714 Address ACK 0 1 0 0 1 0 +7.5dB Stereo 2 Loudness ON Set treble at -10dB. MSB Start MS6714 Address Data byte LSB ACK 0 1 1 1 0 1 0 -10dB Treble REV1.0 0 12 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor APPLICATION INFORMATION Basic Application Example 5.6K 2.2u MCU 100n 100n 25 13 8 TREB_L 9 2.7n 3 BIN_L 14 100n 19 BOUT_L INPUT 20 LOUD_L 10 12 LIN 15 17 LOUT 11 18 27 SCL 16 SDA DGND 2.2u 26 LIN1 RIN1 LIN2 RIN2 10u OUT_L MS6714 LIN3 RIN3 24 10u OUT_R OUTPUT 23 LIN4 RIN4 7 AVDD 22 100n TREB_R 5 22u BIN_R 6 BOUT_R 28 RIN ROUT 2 REF AGND AVDD 1 LOUD_R 2.2u 21 100n 100n 4 2.7n 2.2u 5.6K REV1.0 13 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor EXTERNAL DIMENSIONS SOP28 (300mil) D Detail A F H h x45 C A e B A1 0.25mm θ Detail A Dimension in mm L Dimension in inch Symbol Min Max Min Max A 2.35 2.65 0.0926 0.1043 A1 0.10 0.30 0.0040 0.0118 B 0.33 0.51 0.013 0.020 C 0.23 0.32 0.0091 0.0125 e REV1.0 1.27 BASIC 0.050 BASIC E 7.40 7.60 0.2914 H 10.00 10.65 0.394 0.419 L 0.40 1.27 0.016 0.050 D 17.70 18.10 0.6969 0.7125 h θ 0.25 0.75 0.010 0.029 o 0 o 8 14 o 0 0.2992 o 8 www.mosanalog.com MOSA MS6714 4 Stereo Inputs / 2 Channels Output Audio Processor SSOP28 D Detail A E1 E H x45 c ZD θ2 θ1 A2 A R1 e L1 b R A1 θ L Detail A Dimension in mm Dimension in inch Symbol Min Max Min NOM Max A 1.35 1.63 1.75 0.053 0.064 0.069 A1 0.10 0.15 0.25 0.004 0.006 0.010 A2 - - 1.50 - - 0.059 b 0.20 - 0.30 0.008 - 0.012 c 0.18 - 0.25 0.007 - 0.010 e 0.635 BASIC 0.025 BASIC D 8.56 9.91 8.74 0.337 0.390 E 5.79 5.99 6.20 0.228 0.236 0.244 E1 3.81 3.91 3.99 0.150 0.154 0.157 L 0.41 0.635 1.27 0.016 0.025 0.050 h 0.25 - 0.50 0.010 - 0.020 ZD 0.838REF 0.344 0.033REF R1 0.20 - 0.33 0.008 - R θ 0.20 - - 0.008 - - - 8 o - 8 o - θ1 θ2 REV1.0 NOM o 0 o 0 o 5 o 10 0 -0 o 15 15 o o 5 10 0.013 o o 15 o www.mosanalog.com