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TDA7419
3 BAND CAR AUDIO PROCESSOR
1

FEATURES
4 STEREO INPUTS SOFT STEP VOLUME BASS, MIDDLE, TREBLE AND LOUDNESS DIRECT MUTE AND SOFTMUTE FOUR INDEPENDENT SPEAKER OUTPUTS SUB WOOFER OUTPUT SOFT STEP SPEAKER/SUBWOOFER CONTROL 7 BANDS SPECTRUM ANALYZER DIGITAL CONTROL: - I2C-BUS INTERFACE
Figure 1. Package
SO-28
Table 1. Order Codes
Part Number TDA7419 TDA7419TR Package SO-28 SO-28 in Tape & Reel

2
DESCRIPTION
The TDA7419 is a high performance signal processor specifically designed for car radio applications. The device includes a high performance audioproFigure 2. Block Diagram
SAOUT SACLK MUTE
cessor with fully integrated audio filters. The digital control allows programming in a wide range of filter characteristics. By the use of BICMOS-process and linear signal processing low distortion and low noise are obtained.
ACOUTL/ AC2OUTL
ACOUTR/ AC2OUTR
ACINL/ FILOL
ACINR/ FILOR
Spectrum Analyzer
DIFFL DIFFG DIFFR SE1L
INPUT Softstep MonoFader
InGain AutoZero
Loudness
SoftMute
Softstep Volume
HPF
Treble
Middle
Bass
Mix
OUTLF
Softstep MonoFader
HPF
Mix
OUTRF
SE1R SE2L SE2R
MULTIPLEXER Softstep MonoFader
OUTLR
Softstep MonoFader
OUTRR OUTSW/ OUTLR2 MIX/ OUTSW/ OUTRR2
Subwoofer LPF
Softstep MonoFader
Softstep MonoFader
SUPPLY
DIGITAL CONTROL
I2C BUS
VDD GND CREF
VREFOUTF
SCL
SDA
AC2INL/ SE3L
AC2INR/ SE3R
March 2005
Rev. 2 1/30
TDA7419
Table 2. Supply
Symbol Vs Is SVRR Parameter Supply Voltage Supply Current Ripple Rejection @ 1KHz Vs = 8.5V Audioprocessor(all Filters flat) Test Condition Min. 7.5 30 60 Typ. 8.5 35 Max. 10.5 40 Unit V mA dB
Table 3. Thermal Data
Symbol Parameter Value 85 Unit C/W
RTh j-pins Thermal Resistance Junction-pins max
Table 4. Absolute Maximum Ratings
Symbol Vs Tamb Tstg Operating Supply Voltage Operating Temperature Range Storage Temperature Range Parameter Value 10.5 -40 to 85 -55 to +150 Unit V C C
ESD All pins are protected against ESD according to the MIL883 standard. Figure 3. Pin connection (Top view)
ACOUTR/AC2OUTR ACINR/FILOR ACINL/FILOL ACOUTL/AC2OUTL SE3L/ACINL SE3R/ACINR SE2L SE2R SE1L SE1R DIFFL DIFFG DIFFR CREF
1 2 3 4 5 6 7 8 9 10 11 12 13 14
D04AU1569
28 27 26 25 24 23 22 21 20 19 18 17 16 15
MIX/OUTSW/OUTRR2 VREF SAOUT SAIN VDD SDA SCL MUTE OUTLF OUTLR OUTRR OUTRF OUTSW/OUTLR2 GND
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Table 5. Pin Description
Pin N# 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 Pin Name ACOUTR / AC2OUTR ACINR / FILOR ACINL / FILOL ACOUTL / AC2OUTL SE3L / ACINL SE3R / ACINR SE2L SE2R SE1L SE1R DIFFL DIFFG DIFFR CREF GND OUTSW / OUTLR2 OUTRF OUTRR OUTLR OUTLF MUTE SCL SDA VDD SAIN SAOUT VREF Function AC coupling right output / DSO filter AC2OUT right channel AC coupling right input / DSO filter FILO right channel AC coupling left input / DSO filter FILO left channel AC coupling left output / DSO filter AC2OUT left channel Single-ended input 3 left channel / AC coupling left input Single-ended input 3 right channel / AC coupling right input Single-ended input 2 left channel Single-ended input 2 right channel Single-ended input 1 left channel Single-ended input 1 Right channel Pseudo differential stereo input left Pseudo differential stereo input common Pseudo differential stereo input right Reference capacitor Ground Subwoofer output / Front right output Rear right output Rear left output Front left output External mute pin I2C bus clock I2C bus data Supply Spectrum analyzer clock input Spectrum analyzer output Vref output 2nd rear left output I/O O I/O I/O O I I I I I I I I I O S O O O O O I I I/O S I O O I/O
MIX / OUTSW / OUTRR2 Mix input / Additional subwoofer output / 2nd rear right output
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3
Audio Processor Features:
QD / SE: quasi-differential stereo inputs, with selectable single-ended mode SE1: stereo single-ended input SE2: stereo single-ended input SE3 / AC2IN: stereo single-ended input / DSO filter input In-Gain 0 to 15dB, 1dB steps internal offset-cancellation (AutoZero) separate second source-selector mixable to front speaker-outputs 2nd order frequency response programmable center frequency (400Hz/800Hz/2400Hz) 15dB with 1dB steps selectable low & high frequency boost selectable flat-mode (constant attenuation) +15dB to -79dB with 1dB step resolution soft-step control with programmable blend times 2nd order frequency response center frequency programmable in 4 steps (60Hz/80Hz/100Hz/200Hz) Q programmable 1.0/1.25/1.5/2.0 DC gain programmable -15 to 15dB range with 1dB resolution 2nd order frequency response center frequency programmable in 4 steps (500Hz/1KHz/1.5KHz/2.5KHz) Q programmable 0.5/0.75/1.0/1.25 DC gain programmable -15 to 15dB range with 1dB resolution 2nd order frequency response center frequency programmable in 4 steps (10KHz/12.5KHz/15KHz/17.5KHz) -15 to 15dB range with 1dB resolution seven bandpass filters 2nd order frequency response programmable Q factor for different visual appearance analog output controlled by external serial clock 4 independent soft step speaker controls, +15dB to -79dB with 1dB steps Independent programmable mix input with 50% mixing ratio for front speakers direct mute 2nd order low pass filter with programmable cut off frequency single-ended mono output independent soft step level control, +15dB to -79dB with 1dB steps direct mute digitally controlled SoftMute with 3 programmable mute-times(0.48ms/0.96ms/ 123ms) gain effect, or high pass effect with fixed external components
Input Multiplexer
Mixing stage Loudness
Volume Bass
Middle
Treble
Spectrum analyzer
Speaker
Subwoofer
Mute Functions
Effect
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4
ELECTRICAL CHARACTERISTICS
Table 6. Electrical Characteristcs VS = 8.5V; Tamb = 25C; RL= 10k ; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol SUPPLY Vs IS Rin VCL SIN GIN MIN GIN MAX GSTEP VDC Voffset Rin CMRR eNo MLEVEL GMAX AMAX ASTEP AMAX ASTEP fPeak Supply Voltage Supply Current Input Resistance Clipping level Input Separation Min. Input Gain Max. Input Gain Step Resolution DC Steps Remaining offset with AutoZero Input Resistance Common Mode Rejection Ratio Differential VCM =1 VRMS@ 1kHz VCM =1 VRMS@ 10kHz Output Noise @ Speaker Outputs 20Hz-20kHz,flat;all stages 0dB Mixing Ratio Max Gain Max Attenuation Step Resolution Max Attenuation Step Resolution Peak Frequency Main / Mix Source 13 -83 0.5 -17 0.5 MIXING CONTROL -6/-6 15 -79 1 -15 1 400 800 2400 17 -75 1.5 -13 1.5 440 880 2600 dB dB dB dB dB dB Hz Hz Hz 70 46 46 Adjacent Gain Steps GMIN to GMAX DIFFERENTIAL STEREO INPUTS 100 70 60 12 130 K dB dB V All single ended inputs All Input QD input 8 27 70 1.8 1.7 80 -1 13 0.5 -5 -20 8.5 37 100 2 2 100 0 15 1 1 4 0.5 1 17 1.5 5 20 10 47 130 V mA k VRMS VRMS dB dB dB dB mV mV mV Parameter Test Condition Min. Typ. Max. Unit
INPUT SELECTOR
LOUDNESS CONTROL
fP1 fP2 fP3
360 720 2200
VOLUME CONTROL GMAX AMAX ASTEP EA ET VDC Max Gain Max Attenuation Step Resolution Attenuation Set Error Tracking Error DC Steps Adjacent Attenuation Steps From 0dB to GMIN -3 -5 0.1 0.5 G = -20 to +20dB G = -79 to -20dB 13 -83 0.5 -0.75 -4 15 -79 1 0 0 17 -75 1.5 +0.75 3 2 3 5 dB dB dB dB dB dB mV mV
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Table 6. Electrical Characteristcs (continued) VS = 8.5V; Tamb = 25C; RL= 10k ; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol SOFT MUTE AMUTE TD Mute Attenuation Delay Time T1 T2 T3 VTH Low VTH High RPU VPU Fc Low Threshold for SM Pin High Threshold for SM Pin Internal pull-up resistor Internal pull-up Voltage Center Frequency fC1 fC2 fC3 fC4 QBASS Quality Factor Q1 Q2 Q3 Q4 CRANGE ASTEP DCGAIN Control Range Step Resolution Bass-DC-Gain DC = off DC = on (shelving filter, use for cut only) MIDDLE CONTROL CRANGE ASTEP fc Control Range Step Resolution Center Frequency fC1 fC2 fC3 fC4 QBASS Quality Factor Q1 Q2 Q3 Q4 TREBLE CONTROL CRANGE ASTEP fc Clipping Level Step Resolution Center Frequency fC1 fC2 fC3 fC4 14 0.5 8 10 12 14 15 1 10 12.5 15 17.5 16 1.5 12 15 18 21 dB dB kHz kHz kHz kHz 14 0.5 400 0.8 1.2 2 0.45 0.65 0.9 1.1 15 1 500 1 1.5 2.5 0.5 0.75 1 1.25 16 1.5 600 1.2 1.8 3 0.55 0.85 1.1 1.4 dB dB Hz kHz kHz kHz 54 72 90 180 0.9 1.1 1.3 1.8 14 0.5 -1 2.5 32 45 3.3 60 80 100 200 1 1.25 1.5 2 15 1 0 -4.4 66 88 110 220 1.1 1.4 1.7 2.2 16 1.5 +1 dB dB dB dB 58 70 80 100 0.48 0.96 123 1 2 170 1 dB ms ms ms V V Parameter Test Condition Min. Typ. Max. Unit
k
V Hz Hz Hz Hz
BASS CONTROL
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Table 6. Electrical Characteristcs (continued) VS = 8.5V; Tamb = 25C; RL= 10k ; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol GMAX AMAX ASTEP AMUTE EE VDC VCL ROUT RL CL VDC GMAX AMAX ASTEP AMUTE EE VDC fLP Max Gain Max Attenuation Step Resolution Mute Attenuation Attenuation Set Error DC Steps Clipping level Output impedance Output Load Resistance Output Load Capacitor DC Voltage Level Max Gain Max Attenuation Step Resolution Mute Attenuation Attenuation Set Error DC Steps Lowpass Corner Frequency Adjacent Attenuation Steps fLP1 fLP2 fLP3 HPF EFFECT GMAX GMIN ASTEP VSAOut fC1 fC2 fC3 fC4 fC5 fC6 fC7 Q fSAClk tSadel Max Gain Min Gain Step Resolution Output Voltage Range Center Frequency Band 1 Center Frequency Band 2 Center Frequency Band 3 Center Frequency Band 4 Center Frequency Band 5 Center Frequency Band 6 Center Frequency Band 7 Quality Factor Clock Frequency Analog Output Delay Time Q1 Q2 21 3 1.5 0 5.5 141 356 0.9 2.26 5.70 14.4 1.62 3.15 3 2 62 157 392 1 2.51 6.34 16 1.8 3.5 22 4 2 23 5 2.5 3.3 69 173 436 1.1 2.76 6.98 17.6 1.98 3.85 100 kHz s dB dB dB V Hz Hz Hz kHz kHz kHz kHz -5 72 108 144 1 80 120 160 3.8 14 -83 0.5 80 4.0 15 -79 1 90 2 5 88 132 176 2 10 4.2 16 -75 1.5 Adjacent Attenuation Steps d = 0.3% -5 1.8 0.1 2 30 100 Parameter Test Condition Min. 14 -83 0.5 80 Typ. 15 -79 1 90 2 5 Max. 16 -75 1.5 Unit dB dB dB dB dB mV VRMS k nF V dB dB dB dB dB mV Hz Hz Hz SPEAKER ATTENUATORS
AUDIO OUTPUTS
SUBWOOFER ATTENUATOR
SUBWOOFER LOWPASS
SPECTRUM ANALYZER CONTROL
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Table 6. Electrical Characteristcs (continued) VS = 8.5V; Tamb = 25C; RL= 10k ; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol trepeat tintres eNO Parameter Spectrum Analyzer Repeat Time Internal Reset Time Output Noise BW=20Hz to 20 kHz all gain = 0dB BW=20Hz to 20 kHz Output muted S/N D SC Signal to Noise Ratio Distortion Channel Separation left/right all gain = 0dB flat; Vo =2VRMS VIN = 1VRMS; all stages 0dB 80 Test Condition Min. 50 4.5 12 6 100 0.01 90 0.1 20 15 Typ. Max. Unit ms ms V V dB % dB
GENERAL
5
DESCRIPTION OF THE AUDIOPROCESSOR
5.1 Input stages In the basic configuration, one stereo quasi-differential and three (two in case of DSO applications) single ended stereo inputs are available. 5.1.1 Quasi-differential stereo Input (QD) The QD input is implemented as a buffered quasi-differential stereo stage with 100k input-impedance at each input. The attenuation is fixed to -3dB in order to adapt the incoming signal level. 5.1.2 Single-ended stereo input (SE1, SE2, SE3/AC2IN) The input-impedance at each input is 100k and the attenuation is fixed to -3dB for incoming signals. The input for SE3 is also configurable as part of the interface for external filters in DSO applications (AC2IN) Figure 4. Input Stage
QD_L QD_G QD_R
QD
QD
Main Source In Gain
SE4
SE1_L SE1_R
SE1
SE1
SE2_L SE2_R
SE2
SE2
AC2IN_L/SE3L AC2IN_R/SE3R
SE3
SE3
Second Source Output Stage
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5.2 AutoZero The AutoZero allows a reduction of the number of pins as well as external components by canceling any offset generated by or before the In-Gain-stage (Please notice that externally generated offsets, e.g. generated through the leakage current of the coupling capacitors, are not canceled). The auto-zeroing is started every time the input source is changed and needs max. 0.3ms for the alignment. To avoid audible clicks the Audio processor is muted before the loudness stage during this time. The AutoZero feature is only present in the main signal-path. 5.2.1 AutoZero-Remain In some cases, for example if the P is executing a refresh cycle of the IIC-Bus-programming, it is not useful to start a new AutoZero-action because no new source is selected and an undesired mute would appear at the outputs. For such applications, it can be switched in the AutoZero-Remain-Mode (Bit 6 of the subaddress-byte). If this bit is set to high, the AutoZero will not be invoked and the old adjustment-value remains. 5.3 Loudness There are four parameters programmable in the loudness stage: 5.3.1 Attenuation Figure 5 shows the attenuation as a function of frequency at fP = 400Hz Figure 5. Loudness Attenuation @ fP = 400Hz.
5
0
-5
-10
-15
-20 10 100 1K 10K
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5.3.2 Peakr Frequency Figure 6 shows the three possible peak-frequencies 400Hz , 800Hz and 2.4kHz. Figure 6. Loudness Center frequencies @ Attn. = 15dB
5
0
-5
-10
-15
-20 10 100 1K 10K
5.3.3 Low & High Frequency Boost Figure 7 shows the different Loudness-shapes in low & high frequency boost. Figure 7. Loudness Attenuation , fC = 2.4KHz
5
0
-5
-10
-15
-20 10 100 1K 10K
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5.3.4 Flat Mode In flat mode the loudness stage works as a 0dB to -15dB attenuator. 5.4 SoftMute The digitally controlled SoftMute stage allows muting/demuting the signal with a I2C-bus programmable slope. The mute process can either be activated by the SoftMute pin or by the I2C-bus. This slope is realized in a special S-shaped curve to mute slow in the critical regions (see Figure 8). For timing purposes the Bit0 of the I2C-bus output register is set to 1 from the start of muting until the end of demuting. Figure 8. Sofmute Timing
EXT. MUTE
1
+SIGNAL
REF
-SIGNAL
1 I2C BUS OUT
D97AU634
Time
Note: Please notice that a started Mute-action is always terminated and could not be interrupted by a change of the mute -signal
5.5 SoftStep-Volume When the volume-level is changed audible clicks could appear at the output. The root cause of those clicks could either be a DC-Offset before the volume-stage or the sudden change of the envelope of the audiosignal. With the SoftStep feature both kinds of clicks could be reduced to a minimum and are no more audible. The blend-time from one step to the next is programmable in four steps. Figure 9. SoftStep Timing
VOUT 1dB
0.5dB
SS Time -0.5dB
Time
-1dB
D00AU1170
Note: For steps more than 0.5dB the SoftStep mode should be deactivated because it could generate a hard 1dB step during the blend-time.
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5.6 Bass There are four parameters programmable in the bass stage: 5.6.1 Attenuation Figure 9 shows the attenuation as a function of frequency at a center frequency of 80Hz. Figure 10. Bass Control @ fC = 80Hz, Q = 1
15.0
10.0
5.0
dB
0.0
-5.0
-10.0
-15.0 10.0 100.0
Hz
1.0K
10.0K
5.6.2 Center Frequency Figure 11 shows the four possible center frequencies 60, 80, 100 and 200Hz. Figure 11. Bass center Frequencies @ Gain = 15dB, Q = 1
16
12
8
4
0
-4 10 100 1K 10K
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5.6.3 Quality Factors Figure 12 shows the four possible quality factors 1, 1.25, 1.5 and 2. Figure 12. Bass Quality factors @ Gain = 14dB, fC = 80Hz
15.0
12.5
10.0
7.5
5.0
2.5
0.0
10.0
100.0
1.0K
10.0K
5.6.4 DC Mode It is used for cut only for shelving filter. In this mode the DC-gain is increased by 4.4dB. Inaddition the programmed center frequency and quality factor is decreased by 25% which can be used to reach alternative center frequencies or quality factors. Figure 13. Bass normal and DC Mode @ Gain = 14dB, fC = 80Hz
15.0
12.5
10.0
7.5
5.0
2.5
0.0 10.0 100.0 1.0K 10.0K
Note: The center frequency, Q and DC-mode can be set fully independently.
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5.7 Middle There are three parameters programmable in the middle stage: 5.7.1 Attenuation Figure 14 shows the attenuation as a function of frequency at a center frequency of 1kHz. Figure 14. Middle Control @ fC = 1 kHz, Q = 1
5.7.2 Center Frequency Figure 14 shows the four possible center frequencies 500Hz, 1kHz, 1.5kHz and 2.5kHz. Figure 15. Middle center Frequencies @ Gain = 14dB, Q = 1
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5.7.3 Quality Factors Figure 16 shows the four possible quality factors 0.5, 0.75, 1 and 1.25. Figure 16. Middle Quality factors @ Gain = 14dB, fc = 1kHz
5.8 Treble There are two parameters programmable in the treble stage: 5.8.1 Attenuation Figure 16 shows the attenuation as a function of frequency at a center frequency of 17.5kHz. Figure 17. Treble Control @ fC = 17.5kHz
20 15 10 5 0 -5 -10 -15 -20 10 100 1K 10K
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5.8.2 Center Frequency Figure 18 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz. Figure 18. Treble Center Frequencies @ Gain = 15dB
20
15
10
5
0
-5 10 100 1K 10K
5.9 Subwoofer Filter The subwoofer lowpass filter has butterworth characteristics with programmable cut-off frequency (80/ 120/160Hz) Figure 19. Subwoofer Control
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5.10 Spectrum Analyzer A fully integrated seven-band spectrum analyzer with programmable quality factor is present. The spectrum analyzer consists of seven band pass filters with rectifier and sample capacitor that stores the maximum peak signal level since the last read cycle. This peak signal level can be read by a microprocessor at the SAout-pin. To allow easy interfacing to an analog port of the microprocessor, the output voltage at this pin is referred to device ground. The microprocessor starts a read cycle with the negative going clock edge at the SAclk input. On the following positive clock edges, the peak signal level for the band pass filters is subsequently switched to SAout. Each analog output data is valid after the time tSadel. A reset of the sample capacitors is induced whenever SAclk remains high for the time tintres. Note that a proper reset requires the clock signal SAclk to be held at high potential. Figure 20 shows the block diagram and figure 21 illustrates the read cycle timing of the spectrum analyzer. Figure 20. Spectrum analyzer block diagram
Figure 21. Timing of the spectrum analyzer
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5.11 AC-Coupling In some applications additional signal manipulations are desired, such as additional band equalizations. For this purpose, an AC-Coupling can be placed before the loudness attenuator or speaker-attenuators, which can be activated or internally shorted by I2C-Bus. In short condition, the input-signal of the speakerattenuator is available at the AC-Outputs. The input-impedance of this AC-Inputs is 50k. Figure 22. Diagram of AC coupling
ACOUTL
ACOUTR
ACINL
ACINR
From Input MUX
InGain
Filters
Speakers
To Output
5.12 DSO Applications For DSO applications, DSO filter is available for additional processing after the speaker control. It is a 2nd order Butterworth highpass filter with selectable flat mode. Figure 23 shows the diagram of the DSO that includes an external RC network. Figure 23. DSO diagram
External RC network
ACOUT /AC2OUT
SE3IN /AC2IN
ACIN /FILO Gain Control
From speaker
To output
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5.13 Output Selector and Mixing The output-selector allows the front and rear speakers to connect to different sources. The setup of the output selector is shown in Figure 24. A Mixing-stage is placed after the front speaker-attenuator and can be set to mixing-mode. Having a full volume-attenuator for the mix-signal, the stage offers a wide flexibility to adapt the mixing levels. Figure 24. Output Selector
Mix_in Attenuator
Front Main Second Attenuator BassL+BassR Subwoofer output Attenuator Rear
Subwoofer filter
Attenuator
5.14 Audioprocessor Testing In the test mode, which can be activated by setting bit D7 of the IIC subaddress byte and bit D0 of the testing audioprocessor byte, several internal signals are available at the SE1R pin. In this mode, the input resistance of 100kOhm is disconnected from the pin. Internal signals available for testing are listed in the data-byte specification. 5.15 Test Circuit Figure 25. Test Circuit
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6
I2C BUS SPECIFICATION
6.1 Interface Protocol The interface protocol comprises: - a start condition (S) - a chip address byte (the LSB determines read/write transmission) - a subaddress byte - a sequence of data (N-bytes + acknowledge) - a stop condition (P) - the max. clock speed is 500kbits/s - 3.3V logic compatible 6.1.1 Receive Mode
S 1 0 00 1 0 0 R/W ACK TS AZ AI A4 A3 A2 A1 A0 ACK DATA ACK P
S = Start R/W = "0" -> Receive Mode (Chip can be programmed by P) "1" -> Transmission Mode (Data could be received by P) ACK = Acknowledge P = Stop TS = Testing mode AZ = Auto zero remain AI = Auto increment 6.1.2 Transmission Mode
S 1 0 0 0 1 0 0 R/W ACK X X X X X X X SM ACK P
SM = Soft mute activated for main channel X = Not Used The transmitted data is automatic updated after each ACK. Transmission can be repeated without new chip address. 6.1.3 Reset Condition A Power-On-Reset is invoked if the Supply-Voltage is below than 3.5V. After that the following data is written automatically into the registers of all subaddresses:
MSB 1 1 1 1 1 1 1
LSB 0
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6.2 Subaddress (receive mode)
Table 7. Subaddress (receive mode)
MSB I2 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 I1 I0 A4 A3 A2 A1 LSB A0 Testing Mode Off On Auto Zero Remain Off On Auto Increment Mode Off On Main Source Selector Main Loudness Soft Mute / Clock Generator Volume Treble Middle Bass Second Source Selector Subwoofer / Middle / Bass Mixing / Gain Effect Speaker Attenuator Left Front Speaker Attenuator Right Front Speaker Attenuator Left Rear Speaker Attenuator Right Rear Mixing Level Control Subwoofer Attenuator Spectrum Analyzer / Clock Source / AC Mode Testing Audio Processor FUNCTION
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6.3 Data Byte Specification
Table 8. Main Selector (0)
MSB D7 D6 D5 D4 D3 D2 0 0 0 0 1 1 1 0 0 : 1 1 0 1 0 0 : 1 1 0 0 : 1 1 0 1 : 0 1 D1 0 0 1 1 0 0 1 LSB D0 0 1 0 1 0 1 x Source Selector QD/SE: QD SE1 SE2 SE3 QD/SE: SE mute mute Input Gain 0dB 1dB : 14dB 15dB Auto Zero on off FUNCTION
Table 9. Main Loudness (1)
MSB D7 D6 D5 D4 D3 0 0 : 1 1 0 0 1 1 0 1 0 1 0 1 0 1 D2 0 0 : 1 1 D1 0 0 : 1 1 LSB D0 0 1 : 0 1 Attenuation 0dB -1dB : -14dB -15dB Center Frequency Flat 400Hz 800Hz 2400Hz High Boost on off Loudness Soft Step on off FUNCTION
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Table 10. Soft Mute / Clock Generator (2)
MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 0 1 0 1 0 0 1 0 0 0 0 1 1 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 x Soft Mute on off Pin Influence for Mute Pin and IIC IIC Soft Mute Time 0.48ms 0.96ms 123ms Soft Step Time 0.160ms 0.321ms 0. 642ms 1.28ms 2.56ms 5.12ms 10.24ms 20.48ms Clock Fast Mode on off FUNCTION
Table 11. Volume / Speaker / Mixing / Subwoofer Attenuation (3, 10-15)
MSB D7 D6 0 0 : 0 0 0 : 1 1 1 0 1 D5 0 0 : 0 0 0 : 0 0 1 D4 0 0 : 0 1 1 : 1 1 x D3 0 0 : 1 0 0 : 1 1 x D2 0 0 : 1 0 0 : 1 1 x D1 0 0 : 1 0 0 : 1 1 x LSB D0 0 1 : 1 0 1 : 0 1 x Gain/Attenuation +0dB +1dB : +15dB -0dB -1dB : -78dB -79dB mute Soft Step on off FUNCTION
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Table 12. Treble Filter (4)
MSB D7 D6 D5 D4 0 0 : 0 0 1 1 : 1 1 0 0 1 1 0 1 0 1 0 1 D3 1 1 : 0 0 0 0 : 1 1 D2 1 1 : 0 0 0 0 : 1 1 D1 1 1 : 0 0 0 0 : 1 1 LSB D0 1 0 : 1 0 0 1 : 0 1 Gain/Attenuation -15dB -14dB : -1dB 0dB 0dB +1dB : +14dB +15dB Treble Center Frequency 10.0kHz 12.5kHz 15.0kHz 17.5kHz Reference Output Select External Vref (4V) Internal Vref (3.3V) FUNCTION
Table 13. Middle Filter (5)
MSB D7 D6 D5 D4 0 0 : 0 0 1 1 : 1 1 0 0 1 1 0 1 0 1 0 1 D3 1 1 : 0 0 0 0 : 1 1 D2 1 1 : 0 0 0 0 : 1 1 D1 1 1 : 0 0 0 0 : 1 1 LSB D0 1 0 : 1 0 0 1 : 0 1 Gain/Attenuation -15dB -14dB : -1dB 0dB 0dB +1dB : +14dB +15dB Middle Q Factor 0.5 0.75 1 1.25 Middle Soft Step on off FUNCTION
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Table 14. Bass Filter (6)
MSB D7 D6 D5 D4 0 0 : 0 0 1 1 : 1 1 0 0 1 1 0 1 0 1 0 1 D3 1 1 : 0 0 0 0 : 1 1 D2 1 1 : 0 0 0 0 : 1 1 D1 1 1 : 0 0 0 0 : 1 1 LSB D0 1 0 : 1 0 0 1 : 0 1 Gain/Attenuation -15dB -14dB : -1dB 0dB 0dB +1dB : +14dB +15dB Bass Q Factor 1.0 1.25 1.5 2.0 Bass Soft Step on off FUNCTION
Table 15. Second Source Selector (7)
MSB D7 D6 D5 D4 D3 D2 0 0 0 0 1 1 1 0 0 : 1 1 0 1 0 0 : 1 1 0 0 : 1 1 0 1 : 0 1 D1 0 0 1 1 0 0 1 LSB D0 0 1 0 1 0 1 x Source Selector QD/SE: QD SE1 SE2 SE3 QD/SE: SE mute mute Input Gain 0dB 1dB : 14dB 15dB Rear Speaker Source main source second source FUNCTION
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Table 16. Subwoofer /Middle / Bass (8)
MSB D7 D6 D5 D4 D3 D2 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 LSB D0 0 1 0 1 Subwoofer Cut-off Frequency flat 80Hz 120Hz 160Hz Middle Center Frequency 500Hz 1000Hz 1500Hz 2500Hz Bass Center Frequency 60Hz 80Hz 100Hz 200Hz Bass DC Mode on off Smoothing Filter on off (bypass) FUNCTION
Table 17. Mixing / Gain Effect (9)
MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 0 1 0 1 0 1 0 1 0 0 : 1 1 1 1 0 0 : 0 0 0 1 0 0 : 0 0 1 x 0 1 : 0 1 x x Mixing to Left Front Speaker on off Mixing to Right Front Speaker on off Mixing Enable on off Subwoofer Enable (OUTLR2 & OUTRR2) on off Gain Effect for DSO Filter 4dB 6dB : 20dB 22dB 0dB 0dB FUNCTION
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Table 18. Spectrum Analyzer / Clock Source / AC Mode (16)
MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 1 FUNCTION Spectrum Analyzer Filter Q Factor 3.5 1.75 Reset Mode IIC Auto Spectrum Analyzer Source Bass InGain Spectrum Analyzer Run on off Reset on off Clock Source internal external Coupling Mode DC Coupling (without DSO) AC coupling after InGain DC Coupling (with DSO) AC coupling after Bass
Table 19. Testing Audio Processor (17)
MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 x x 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 x x x x x x x x FUNCTION Audio Processor Testing Mode off on Test Multiplexer Left InGain Left InGain Left Loudness Left Loudness Left Volume Left Volume Left Treble Left Treble Left Middle SMCLK Left Bass VrefSCR VGB1.26 SSCLK Clock200 Mon Ref5V5 BPout<1> BPout<2> BPout<3> BPout<4> BPout<5> BPout<6> BPout<7> Not used
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Figure 26. SO-28 Mechanical Data & Package Dimensions
DIM. MIN. A a1 b b1 C c1 D E e e3 F L S 7.4 0.4 17.7 10 0.1 0.35 0.23
mm TYP. MAX. 2.65 0.3 0.49 0.32 0.5 45 (typ.) 18.1 10.65 1.27 16.51 7.6 1.27 0.291 0.016 0.697 0.394 0.004 0.014 0.009 MIN.
inch TYP. MAX. 0.104 0.012 0.019 0.013 0.020
OUTLINE AND MECHANICAL DATA
0.713 0.419 0.050 0.65 0.299 0.050
SO-28
8 (max.)
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Table 20. Revision History
Date November 2004 March 2005 Revision 1 2 First Issue Inserted new values in Electrical Characteristics Description of Changes
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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. Specifications 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. All other names are the property of their respective owners (c) 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com
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