TDA7406TR

TDA7406 Car radio signal processor Features Audio processor ■ 4 Stereo inputs ■ 4 Mono inputs ■ Volume control ■ 7 Band equalizer filter control ■ High pass filter for subwoofer ■ Programmable multipath detector ■ application ■ Quality detector output ■ Direct mute and soft mute ■ Internal beep generation TQFP44 4 Independent speaker outputs ■ Soft step speaker control ■ Subwoofer output ■ 7 Band spectrum analyzer ■ Full mixing capability ■ Pause detector decoder ■ ) (s t c u od r P e ■ RDS mute ■ No external adjustments ■ AM/FM noiseblanker with several trigger controls t e l o s b O u d o r P e t e l o Digital control ■ Stereo decoder ) s ( ct 2 I C-bus interface s b O Description The TDA7406 includes a high performance audio processor with 7 bands equalizer and spectrum analyzer plus a stereo decoder-noiseblanker. The whole low frequency signal processing necessary for state-of-the-art as well as future car radios is therefore provided. The digital control allows a full programming not only of the audioprocessor and filter characteristics but also in the stereodecoder part especially for the adaptation to different IFdevices. Order codes Part number Package Packing E-TDA7406 TQFP44 Tray September 2006 Rev 1 1/64 www.st.com 1 Contents TDA7406 Contents 1 Block and pin connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 2.1 Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 ESD: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 Features: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2 Audioprocessor electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 11 r P e t e l o Description of the audioprocessor part . . . . . . . . . . . . . . . . . . . . . . . . 16 4.1 4.2 s b O Input stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.1.1 Pseudo-differential stereo Input (PD) . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.1.2 Single-ended stereo Inputs, single-ended mono inputs and FM-MPX input 16 4.1.3 Mixing Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.1.4 Beep Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 ) (s t c u d o r AutoZero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 P e 4.2.1 AutoZero for Stereodecoder-Selection . . . . . . . . . . . . . . . . . . . . . . . . . 17 4.2.2 AutoZero-Remain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.2.3 PAUSE Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 let 4.3 Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.4 Soft Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.5 Volume Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 o s b 4.6 2/64 u d o Audioprocessor part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 O ) s ( ct 4.5.1 Gain/Attenuation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.5.2 Soft Step Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 The Seven Band Equalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.6.1 Equalizer Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.6.2 DC-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.7 Subwoofer Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.8 Spectrum analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 TDA7406 Contents 4.8.1 5 AC-coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.10 Speaker-Attenuator stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.11 Output Mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.12 Audioprocessor Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.1 Features: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.2 Stereodecoder electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.3 Dual MPX Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ) s ( ct u d o Noise blanker part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7 r P e 6.1 Features: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 6.2 Noise blanker electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 31 t e l o Multipath detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 8 s b O 7.1 Features: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 7.2 Multipath detector electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . 34 ) (s t c u Functional Description of Stereodecoder . . . . . . . . . . . . . . . . . . . . . . . 35 8.1 Stereodecoder-Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 8.2 InGain + InFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 d o r P e 8.3 Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 8.4 let De-emphasis and Highcut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 8.5 PLL and Pilot tone-Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 8.6 Fieldstrength Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 8.7 LEVEL-Input and -Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 8.8 Stereoblend Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 8.9 Highcut Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 o s b 9 4.9 Stereodecoder part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 6 O Spectrum Analyzer Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Functional description of the noiseblanker . . . . . . . . . . . . . . . . . . . . . 40 9.1 Trigger Path FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 9.2 Noise Controlled Threshold Adjustment (NCT) . . . . . . . . . . . . . . . . . . . . 40 9.3 Additional Threshold Control Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . 41 9.3.1 Automatic Threshold Control by the Stereoblend voltage . . . . . . . . . . . 41 3/64 Contents TDA7406 9.3.2 Over Deviation Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 9.3.3 Multipath-Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 9.3.4 AM mode of the Noiseblanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 10 Functional description of the multipath-detector . . . . . . . . . . . . . . . . 42 11 Quality detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 12 Testmode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 13 I2C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 13.1 ) s ( ct Interface Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 u d o 13.1.1 Auto increment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 13.1.2 TRANSMITTED DATA (send mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 13.1.3 Reset Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 r P e t e l o 13.2 Subaddress (receive mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 13.3 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 s b O 14 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 15 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 ) (s t c u d o r P e t e l o s b O 4/64 TDA7406 List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Table 28. Table 29. Table 30. Table 31. Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Audioprocessor electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Stereodecoder electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Noise blanker electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Multipath detector electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Subaddress (receive mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Input Selector (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Loudness (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Volume (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Equalizer (3,4,5,6,7,8,9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Mixing Programming (10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 SoftMute (11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Subwoofer Configuration / Spectrum Analyzer / HighPass (12) . . . . . . . . . . . . . . . . . . . . . 50 Configuration Audioprocessor I (13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Configuration Audioprocessor II (14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Speaker and Subwoofer Level Control (15,16,17,18,19) . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Mixer Level Control (20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Testing Audioprocessor (21). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Stereodecoder (22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Noiseblanker I (23) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Noiseblanker II (24) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 AM / FM-Noiseblanker (25). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 High-Cut (26) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Fieldstrength Control (27) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Multipath Detector (28) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Stereodecoder Adjustment (29) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Stereodecoder Configuration (30) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Testing Stereodecoder(31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 5/64 List of figures TDA7406 List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pin connection (Top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Input-stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Loudness Attenuation @ fP = 400Hz.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Loudness Center frequencies @ Attn. = 15dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 1st and 2nd Order Loudness @ Attn. = 15dB, fP=400Hz. . . . . . . . . . . . . . . . . . . . . . . . . . 19 Soft Mute-Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 SoftStep-Timing for Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Equalizer filter control @ fCenter = 1kHz, Q = 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Center frequencies @ Gain = 15dB, Q = 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Quality factors @ boost = 15dB, fCenter = 1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Superposition of all EQ bands @ boost = 15dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 EQ band1, normal- and DC-mode @ boost = 15 dB, fCenter = 62 Hz. . . . . . . . . . . . . . . . 23 Subwoofer Application with Lowpass @ 80/120/160Hz and HighPass @ 90/135/180Hz . 24 Spectrum analyzer block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Timing spectrum analyzer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 AC/DC-coupling and MixIn Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Output Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Block diagram Dual MPX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Trigger Threshold vs. VPEAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Deviation Controlled Trigger Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Fieldstrength Controlled Trigger Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Block diagram of the stereodecoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Signals during stereodecoder's SoftMute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Signal-Control via SoftMute-Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Internal stereoblend characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Relation between internal and external LEVEL-voltages for setup of Stereoblend . . . . . . 38 Highcut characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Block diagram of the noiseblanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Block diagram of the Multipath-Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 TQFP44 Mechanical Data & Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 ) s ( ct u d o r P e t e l o ) (s t c u t e l o P e s b O 6/64 d o r s b O CDL NAVI AM NAVI PLL PILDET LOUDNESS SOFTSTEP VOLUME PILOTCANCELLATION SOFT MUTE R + MPIN MPOUT MULTIPATH DETECTOR DEMODULATOR + STEREO ADJUST + STEREO BLED DIGITAL CONTROL 7 BAND EQUALIZER HIGH PASS SWIN ACINR SOFT STEP FADER SOFT STEP FADER REAR PULSE FORMER S&H SUBWOOFER FILTER D A HIGH CUT ) s ( ct LEVEL R L MONO FADER SOFT STEP FADER SOFT STEP FADER SOFT STEP FADER MIXINLF FRONT MIXINLR OUTPUT SELECTOR u d o ACOUTR AM/FM NOISE BLANKER 25KHz-LP MIXINRR ACIN MIXINRF SUBWOOFEROUT DCIN ACINL r P e AM IF 80KHz-LP BEEP + t c u MPX1 STD INGAIN PAUSE IN-GAIN + AUTO ZERO L SWACOUT s b O CMPX R FM L MIXING SELECTOR R L ACOUTL t e l o AM/MPX2 TIM TIM PHONE CDC INPUT MULTIPLEXER MAIN SOURCE SELECTOR ) (s PHONE PDR+ PD- PDL+ TAPER TAPE MD SPECTRUM ANALYSER SM d o r TAPEL MDR MDL CD s b O t e l o CDR P e SAOUT D01AU1255 SUPPLY QUAL I2C BUS MIXER VS GND CREF QUA SCL SDA OUT SW OUT RR OUT RF OUT RF OUT LF Figure 1. SACLK 1 PAUSE TDA7406 Block and pin connection diagram Block and pin connection diagram Block diagram 7/64 Block and pin connection diagram Figure 2. TDA7406 Pin connection (Top view) ) s ( ct u d o r P e t e l o ) (s t c u d o r P e t e l o s b O 8/64 s b O TDA7406 Electrical specifications 2 Electrical specifications 2.1 Supply Table 1. Supply Symbol Parameter VS Supply Voltage IS Supply Current SVRR Test Conditions VS = 9V Thermal data Table 2. Thermal data 7.5 9 10 V 42 60 78 mA Stereodecoder + Audioprocessor 55 r P e Description t e l o Thermal Resistance Junction-pins max Absolute maximum ratings ) (s Parameter t c u Operating Supply Voltage od Tamb Operating Temperature Range Tstg Storage Temperature Range e ESD: t e ol Pr dB Value Unit 65 °C/W Value Unit 10.5 V -40 to 85 °C -55 to +150 °C s b O Table 3. Symbol dB ) s ( ct u d o Absolute maximum ratings bs Unit 60 2.3 2.4 Max. Audioprocessor (all Filters flat) Symbol VS Typ. Ripple Rejection @ 1kHz 2.2 Rth j-pins Min. All pins are protected against ESD according to the MIL883 standard. O 9/64 Audioprocessor part TDA7406 3 Audioprocessor part 3.1 Features: ● ● Input multiplexer – Pseudo differential CDC stereo input, programmable as single-ended input. – 3 single-ended stereo inputs. – 4single-ended mono inputs. – Input gain adjust 0...15dB in 1dB steps. – Internal offset-cancellation (autozero). ) s ( ct Beep – ● Internal beep generator with 4 different frequencies. ● Mixing stage Beep, Phone- and Navi-Input mixable to all speaker outputs. – TIM or tuner (FM/AM) programmable as fourth mixing source. – Level control range of 95dB (+15...-79db). – Loudness programmable center frequency and filter slope. – 0...19dB attenuation in 1dB steps. – selectable flat-mode (constant attenuation). Volume ● r P e t e l o Loudness ● u d o – ) (s s b O – Gain/Attenuation with 0.5dB step resolution. – soft-step control with programmable blend times. – 110dB range (+32...-79db). – t c u d o r Equalizer Seven bands equalizer with 2nd order frequency response switch-capacitors filters. P e t e l o s b O ● ● ● ● 10/64 – Center frequency programmable for lowest and highest filter. – Programmable quality factor in four steps for each filter. – ±15dB range with 1dB steps. Spectrum analyzer – seven bandpass 2nd order frequency response switch-capacitors filters – Programmable quality factor for different visual appearance – Analog output – Controlled by external serial clock High pass Filter – 2nd order Butterworth high pass with programmable cut-off frequency – Selectable flat-mode Speakers – 4 independent speaker controls with separate mute. – Control range 95dB (+15...-79dB) in 1dB steps with soft step. – 4 independent programmable mix inputs with 50% mixing ratio Subwoofer TDA7406 Audioprocessor part ● – Single-ended monaural output – control range 95dB (+15...-79dB) in 1dB steps with soft step. – separate mute Mute functions – direct mute – digitally controlled Soft mute with 4 programmable mute-time 3.2 Audioprocessor electrical characteristics Table 4. Audioprocessor electrical characteristics (VS=9V; Tamb=25°C; RL=10kΩ; all gains=0dB; f=1kHz; unless otherwise specified) Symbol Parameter Test Condition Min. INPUT SELECTOR Rin Input Resistance VCL Clipping Level SIN Input Separation GIN MIN Min. Input Gain all single ended Inputs u d o DIFFERENTIAL STEREO INPUTS Rin CMRR Input Resistance (see Fig. 1) let o s b eNO r P e Common Mode Rejection Ratio Output-Noise @ SpeakerOutputs 130 kΩ 80 100 dB -1 0 1 dB 13 15 17 dB 0.5 1 1.5 dB Adjacent Gain Steps -5 1 5 mV GMIN to GMAX -10 1 10 mV ) (s s b O ct Remaining offset with Autozero Voffset Unit VRMS e t e ol DC Steps 100 Max. 2.6 Step Resolution VDC u d o Pr 2.2 GIN MAX Max. Input Gain GSTEP 70 ) s ( ct Typ. 0.5 mV Differential 70 100 VCM = 1VRMS @ 1kHz 46 70 dB VCM = 1VRMS @ 10kHz 46 60 dB 11 µV 20Hz - 20kHz, flat; all stages 0dB 130 kΩ BEEP CONTROL O VRMS fBeep Beep Level Beep Frequency Mix-Gain = 6dB 250 350 500 mV fBeep1 475 500 525 Hz fBeep2 740 780 820 Hz fBeep3 1.48 1.56 1.64 kHz fBeep4 2.28 2.4 2.52 kHz 11/64 Audioprocessor part Table 4. TDA7406 Audioprocessor electrical characteristics (continued) (VS=9V; Tamb=25°C; RL=10kΩ; all gains=0dB; f=1kHz; unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit MIXING CONTROL MLEVEL Mixing Ratio Main / Mix-Source -6/-6 dB GMAX Max. Gain 13 15 17 dB AMAX Max. Attenuation -83 -79 -75 dB ASTEP Attenuation Step 0.5 1 1.5 dB 1.5 LOUDNESS CONTROL ASTEP Step Resolution 0.5 1 AMAX Max. Attenuation -21 -19 fP1 180 200 fP2 360 Peak Frequency fPeak Max. Attenuation ASTEP Step Resolution 600 660 Hz 720 800 880 Hz 30 32 34 dB -83 -79 -75 dB 0 0.5 1 dB G = -20 to +20dB -0.75 0 +0.75 dB G = -80 to -20dB -4 0 3 dB 2 dB P e 540 t e l o bs EA Attenuation Set Error ET Tracking Error VDC DC Steps e t e ol s b O 12/64 Pr od O ) t(s uc Hz Hz VOLUME CONTROL AMAX dB 440 fP4 Max. Gain 220 dB 400 fP3 GMAX ct -17 du ro (s) Adjacent Attenuation Steps 0.1 3 mV From 0dB to GMIN 0.5 5 mV TDA7406 Audioprocessor part Table 4. Audioprocessor electrical characteristics (continued) (VS=9V; Tamb=25°C; RL=10kΩ; all gains=0dB; f=1kHz; unless otherwise specified) Symbol Parameter Test Condition Min. Typ. 80 100 Max. Unit SOFT MUTE Mute Attenuation AMUTE T1 0.48 1 ms T2 0.96 2 ms Delay Time TD Low Threshold for SM-Pin VTH low T3 70 123 170 ms T4 200 324 600 ms 1) RPU Internal pull-up resistor VPU Internal pull-up Voltage 32 O fC1 Center Frequency Band 1 fC2 Center Frequency Band 2 fC3 Center Frequency Band 3 fC4 Center Frequency Band 4 fC5 Center Frequency Band 5 fC6 Center Frequency Band 6 fC7 e t e l P e let Center Frequency Band 7 Quality Factor kΩ V +16 dB 0.5 1 1.5 dB 55 62 69 Hz 90 100 110 Hz 141 157 173 Hz 365 396 437 Hz fC4 0.9 1 1.1 kHz fC5 2.25 2.51 2.766 kHz fC6a 3.6 4 4.4 kHz fC6b 5.70 6.34 6.98 kHz fC7a 13.5 15 16.5 kHz fC7b 14.4 16 17.6 kHz Q1 0.9 1 1.1 Q2 1.26 1.4 1.54 Q3 1.62 1.8 1.98 Q4 1.98 2.2 2.44 -1 0 +1 o s b O ) fC1b od V +15 fC1a fC2 t(s uc V +14 fC3 DC = off DCGAIN 58 3.3 Step Resolution o s b du 45 ro CRANGE Control Range Pr ct 2.5 EQUALIZER CONTROL ASTEP (s) 1 VTH high High Threshold for SM - Pin Q dB dB DC-gain, Band 1 DC = on, 15dB boost 4 dB SPECTRUM ANALYZER CONTROL VSAOut Output Voltage Range 0 3.3 V fC1 Center Frequency Band 1 fC1 55 62 69 Hz fC2 Center Frequency Band 2 fC2 141 157 173 Hz 13/64 Audioprocessor part Table 4. TDA7406 Audioprocessor electrical characteristics (continued) (VS=9V; Tamb=25°C; RL=10kΩ; all gains=0dB; f=1kHz; unless otherwise specified) Symbol Parameter Test Condition Typ. Max. Unit fC3 Center Frequency Band 3 fC3 356 396 436 Hz fC4 Center Frequency Band 4 fC4 0.9 1 1.1 kHz fC5 Center Frequency Band 5 fC5 2.26 2.51 2.76 kHz fC6 Center Frequency Band 6 fC6 5.70 6.34 6.98 kHz fC7 Center Frequency Band 7 fC7 14.4 16 17.6 kHz 1.8 1.98 Quality Factor Q1 1.62 Q Q2 3.15 3.5 ) s ( ct fSAClk Clock Frequency 1 tSAdel Analog Output Delay Time 2 trepeat Spectrum Analyzer Repeat Time 50 tintres Internal Reset Time e t e ol PAUSE DETECTOR Window 1 VTH Zero Crossing Threshold IDELAY Pull-Up Current VTHP Pause Threshold O ) s ( t c SPEAKER ATTENUATORS ms 3 ms 40 mV 80 mV 160 mV 25 35 3 µA V kΩ 14.5 15.5 16.5 dB -83.5 -79.5 -75 dB Step Resolution 0.5 1 1.5 dB Output Mute Attenuation 80 90 Pr Max. Attenuation e t e l o s b µs 65 AMAX EE u d o kHz 50 Max. Gain ASTEP 100 Pr 15 3.85 35 GMAX AMUTE u d o Input Impedance Rin bs Window 2 Window 3 O Min. Attenuation Set Error VDC DC Steps Adjacent Attenuation Steps MR Mixing Ratio Signal/MixIn 0.5 dB 3 dB 5 mV 50/50 % 2.6 VRMS AUDIO OUTPUTS VCLIP Clipping Level RL Output Load Resistance CL Output Load Capacitance ROUT Output Impedance VDC DC Voltage Level 14/64 Thd=0.3% 2.2 2 4.3 kΩ 10 nF 30 120 W 4.5 4.7 V TDA7406 Audioprocessor part Table 4. Audioprocessor electrical characteristics (continued) (VS=9V; Tamb=25°C; RL=10kΩ; all gains=0dB; f=1kHz; unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit fHP1 81 90 99 Hz fHP2 122 135 148 Hz fHP3 162 180 198 Hz fHP4 194 215 236 Hz Input Impedance 35 50 65 GMAX Max. Gain 14 15 16 dB AATTN Max. Attenuation -83 -79 -75 dB ASTEP Step Resolution 1.5 dB AMUTE Output Mute Attenuation HIGH PASS fHP Highpass corner frequency SUBWOOFER ATTENUATOR Rin EE e t e l Attenuation Set Error DC Steps VDC o s b fLP1 fLP ) s ( ct Lowpass corner frequency fLP2 -O fLP3 GENERAL eNO Output Noise e t e l O o s b S/N d SC u d o Pr Signal to Noise Ratio distortion Channel Separation left/right c u d o r P 0 1 80 90 kΩ dB 2 dB 1 5 mV 72 80 88 Hz 108 120 132 Hz 144 160 176 Hz 3 15 µV 20 µV µV Adjacent Attenuation Steps SUBWOOFER Lowpass ) s ( t BW = 20Hz - 20kHz output muted BW = 20Hz - 20kHz all gains = 0dB single ended inputs 10 all gains = 0dB flat; VO = 2VRMS 103 dB All EQ-bands at +12dB; Q = 1.0 a-weighted; VO = 2.6VRMS 87 dB VIN = 1VRMS; all stages 0dB 0.01 0.1 % VOUT = 1VRMS; Bass & Treble = 12dB 0.05 0.1 % 80 90 dB 15/64 Description of the audioprocessor part TDA7406 4 Description of the audioprocessor part 4.1 Input stages In the basic configuration there is a source-Selector with 8 inputs: one pseudo-differential (CDC), three single ended stereo (MD, CD, Tape), three single-ended mono (PHONE, NAVI, TIM) plus the “tuner” input. The tuner input takes the signal from either MPX1 or MPX2/AM pins (through the stereodecoder) see Figure 3. 4.1.1 Pseudo-differential stereo Input (PD) The PD input is implemented as a buffered pseudo-differential stereo stage with 100kΩ input-impedance at each input pin. This input is also configurable as single-ended stereo input (CDC, see pin-out). The common input-pin, PD- features a fast charge switch to speed up the charge time of external capacitors. This switch is released the first time the inputselector data-byte (0) is assessed. ) s ( ct u d o r P e 4.1.2 Single-ended stereo Inputs, single-ended mono inputs and FM-MPX input t e l o All single ended inputs have an input impedance of 100kΩ. The AM-pin can be connected to the input of the stereo-decoder in order to use the AM-noiseblanker and AM-High-Cut feature. As input “Tuner” for the input selector either the stereo-decoder output or the AM-pin is selectable. 4.1.3 ) (s Mixing Selector s b O t c u It is possible to enable/disable the mixing feature (ratio 50%) at the outputs stages between whichever input source and one of the following signals: Beep, Phone, Navigator and Tuner/TIM. 4.1.4 d o r Beep Generator t e l o P e There are four possible selectable beeping frequencies: 600Hz, 780Hz, 1.56KHz and 2.4KHz. s b O 16/64 TDA7406 Description of the audioprocessor part Figure 3. Input-stages ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r 4.2 AutoZero P e 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). t e l o s b O 4.2.1 The auto-zeroing is started every time the DATA-BYTE 0 is selected and needs max. 0.3ms for the alignment. To avoid audible clicks the Audioprocessor have to be muted by soft mute or hard mute during this time. AutoZero for Stereodecoder-Selection A special procedure is recommended for selecting the stereodecoder at the input-selector to guarantee an optimum offset-cancellation: (Step 0: SoftMute or Mute the signal-path) Step 1: Temporary deselect the stereodecoder at the input-selector Step 2: Configure the stereodecoder via IIC-Bus Step 3: Wait 1ms Step 4: Select the stereodecoder 17/64 Description of the audioprocessor part TDA7406 The root cause of this procedure is, that after muting the stereodecoder (Step 1), the internal stereodecoder filters have to settle in order to perform a proper offset-cancellation. 4.2.2 AutoZero-Remain In some cases, for example if the µP is executing a refresh cycle of the IIC-Busprogramming, 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 the TDA7406 could be switched in the AutoZero-Remain-Mode (Bit 6 of the subaddress-byte). If this bit is set to high, the DATABYTE 0 could be loaded without invoking the AutoZero and the old adjustment-value remains. 4.2.3 PAUSE Detector ) s ( ct A pause detector stage with programmable threshold (40/80/160mV) is provided (see data Byte 14). u d o The pause detector info is available at the PAUSE pin; a capacitor must be connected between this pin and GND. r P e When the incoming signal is detected to be outside the selected window, the external capacitor is discharged. When the signal is inside the window, the capacitor is integrating up. The pause status can be detected in two ways: t e l o s b O a) reading directly the PAUSE pin level Pause Off = level low (3.0V) b) by reading the I2C transmitted byte, bit P P = 1 pause active P = 0 no pause detected ) (s t c u d o r The external capacitor value fixes the time constant. The pull up current is 25μA typical. 4.3 P e Loudness t e l o There are four parameters programmable in the loudness stage: s b O 18/64 ● Attenuation: 0 to -19dB attenuation in 1dB steps vs. frequency (see the response at fP = 400Hz in Figure 4). ● Peak Frequency: Four programmable peak frequencies: 200,400,600 and 800Hz (see Figure 5). ● Filter Order: First or second order frequency response (see Figure 6). ● Flat mode: Selectable flat-mode. In flat mode the loudness stage works as a 0dB to 19dB attenuator. TDA7406 Description of the audioprocessor part Figure 4. Loudness Attenuation @ fP = 400Hz. 0.0 -5.0 -10.0 dB -15.0 -20.0 -25.0 10.0 Figure 5. 100.0 Hz 1.0K dB ) (s -10.0 d o r t e l o Figure 6. s b O t c u -15.0 P e u d o t e l o -5.0 -20.0 10.0 ) s ( ct r P e Loudness Center frequencies @ Attn. = 15dB 0.0 s b O 10.0K 100.0 1.0K 10.0K Hz 1st and 2nd Order Loudness @ Attn. = 15dB, fP=400Hz 0.0 -5.0 dB -10.0 -15.0 -20.0 10.0 100.0 Hz 1.0K 10.0K 19/64 Description of the audioprocessor part 4.4 TDA7406 Soft Mute The digitally controlled Soft Mute stage allows signal muting/demutingwith a programmable slope. The Mute time is selectable among 4 values: 0.48, 0.96, 123 and 324ms. The mute process can either be activated by the Soft Mute pin or via the I2C-bus. This slope is realized in a special S-shaped curve to mute slow in the critical regions (see Figure 7). For timing purposes the I2C-bus output register (Bit0 = SM read bit) is set to 1 from the start of muting until the end of de-muting. Figure 7. Soft Mute-Timing ) s ( ct u d o r P e t e l o Note: s b O Please notice that a started Mute-action is always terminated and could not be interrupted by a change of the mute -signal. ) (s t c u 4.5 Volume Control 4.5.1 Gain/Attenuation Control d o r P e The volume control can range from a gain of 32dB up to an attenuation of 79dB; however it is not recommended to use a gain higher than 20dB for performance reasons. 4.5.2 s b O t e l o 20/64 Soft Step Volume When the speaker-level is changed, audible clicks could appear at the output. The root cause of those clicks could either be a DC offset before the speaker-stage or the sudden change of the envelope of the audio signal. 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 with four different values: 320μs, 1.28ms, 5.12ms and 20.4ms. TDA7406 Description of the audioprocessor part Figure 8. SoftStep-Timing for Volume 1dB 0.5dB SS Time -0.5dB ) s ( ct -1dB u d o Note: For steps more than 0.5dB (Volume) or 1dB (Speaker) the SoftStep mode should be deactivated because it could generate a hard 1dB step during blending. 4.6 The Seven Band Equalizer 4.6.1 Equalizer Filter r P e t e l o s b O Each filter is realized as a switched capacitor with a 2nd order frequency response. ) (s There are three parameters programmable in the equalizer filter: ● Attenuation: ±15dB in 1db step resolution (Figure 9 shows the boost and cut response as a function of frequency at a center frequency of 1kHz.) ● Center Frequency: This parameter is programmable in the filter stages 1(62/100Hz), 6(4/6.34kHz) and 7(15/16kHz). The others bands are fixed at: 157, 396, 1K and 2.5K Hertz (see Figure 10). ● Quality Factors: The four possible quality factors are 1, 1.4, 1.8 and 2.2 (see Figure 11). t c u d o r P e s b O t e l o The center frequency, Q, DC-mode and boost/cut can be set fully independently for each filter. Figure 12 shows the superposition of all equalizer filter curves for different quality factors. 21/64 Description of the audioprocessor part Figure 9. TDA7406 Equalizer filter control @ fCenter = 1kHz, Q = 1.0 15 dB 10 5 0 -5 ) s ( ct -10 -15 100 20 16 t e l o dB 14 12 10 ) (s 8 6 2 d o r 0 t e l o s b O t c u 4 -2 20k Hz r P e Figure 10. Center frequencies @ Gain = 15dB, Q = 1.0 P e u d o 10k 1k 10 100 Hz 1k 20k Figure 11. Quality factors @ boost = 15dB, fCenter = 1kHz bs O 16 dB 14 12 10 8 6 4 2 0 -2 10 22/64 100 1k Hz 20k TDA7406 Description of the audioprocessor part Figure 12. Superposition of all EQ bands @ boost = 15dB 18 dB 16 14 12 10 8 6 ) s ( ct 4 2 du 0 10 4.6.2 1k 100 DC-Mode e t e ol Hz 20k o r P The filter stage 1 (62/100Hz) has a programmable +4dB DC-gain when the boost is set at +15dB (See Figure 13). s b O Figure 13. EQ band1, normal- and DC-mode @ boost = 15 dB, fCenter = 62 Hz 16 ) (s dB 14 12 t c u 10 d o r 8 P e 6 let o s b O 4 2 0 -1 1 10 100 1K Hz 10K Note: The center frequency, Q, DC-mode and boost/cut can be set fully independently for each filter. 4.7 Subwoofer Application There is one separate subwoofer output. A low-pass filter stage at this output allows the selection of three different frequencies: 80/120/160Hz. A high Pass Filter stage is present in the main path with selectable 90/135/180/215Hz frequencies. Both filters, the low-pass as well as the high-pass filter can be disabled and have butterworth characteristics so that their 23/64 Description of the audioprocessor part TDA7406 cutoff frequencies are not equal but shifted by the factor 1.125 to get a flat frequency response (see Figure 14). Figure 14. Subwoofer Application with Lowpass @ 80/120/160Hz and HighPass @ 90/135/180Hz 0.0 -10.0 -20.0 ) s ( ct dB -30.0 u d o -40.0 -50.0 10.0 4.8 100.0 Spectrum analyzer 1.0K Hz t e l o r P e 10.0K s b O A fully integrated seven band spectrum analyzer with programmable quality factor is present in the IC (Figure 15). ) (s The spectrum analyzer consists of seven band pass filters with a rectifier and sample capacitor which 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 a microprocessor analog port, the output voltage at this pin is referred to device ground. t c u d o r The microprocessor starts a read cycle when there is a clock edge going negative 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. P e t e l o s b O 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 15 shows the block diagram and Figure 16 illustrates the read cycle timing of the spectrum analyzer. The spectrum analyzer minimum repeat time is 50ms. 4.8.1 Spectrum Analyzer Filters Each filter is realized as a switched capacitor with a 2nd order frequency response. The center frequency of the filter stages are: 62,157, 396, 1K, 2.51K, 6.34k and 16kHz. It is possible to choose between two different filter quality factors: 1.8 and 3.5. 24/64 TDA7406 Description of the audioprocessor part Figure 15. Spectrum analyzer block diagram Figure 16. Timing spectrum analyzer ) s ( ct u d o r P e t e l o 4.9 AC-coupling ) (s s b O t c u d o r In some applications additional signal manipulations are desired. For this purpose an ACcoupling is placed before the speaker-attenuators, which can be activated or internally shorted by I²C-Bus. In short condition the input-signal of the speaker-attenuator is available at the AC-outputs. The input-impedance of this AC-inputs is 50kΩ. In addition there are MixIn inputs available. With this inputs it is possible to mix an external signal to every speaker with a mixing ratio of 50% (see Figure 17). P e s b O t e l o The source of front and rear speaker can be set independently. As source is possible to choose: – internal dc coupling (not recommended) – external ac coupling using ACIn pins – external ac coupling using MixIn pins – mixing of ACIn and MixIn pins (mixing ratio: 50%) If the MixIn pins of the rear speaker are not used this inputs can be used as mixing inputs for the internal subwoofer filter. 25/64 Description of the audioprocessor part TDA7406 Figure 17. AC/DC-coupling and MixIn Inputs ) s ( ct 4.10 u d o r P e Speaker-Attenuator stage t e l o Each of the four speakers and the subwoofer output has a separate volume control in the range: +15... -79dB plus mute with a typical value of -90dB. 4.11 Output Mixer ) (s s b O A Mixing-stage is placed after each speaker gain/attenuator stage and can be set independently to mixing-mode. t c u Having a full volume control for the Mix-signal in the range:+15... -79dB plus mute with a typical value of -90dB, the stage offers a wide flexibility to adapt the mixing levels. d o r Figure 18. Output Selector P e t e l o s b O 4.12 Audioprocessor Testing During the Test Mode, which can be activated by setting bit I2 of the subaddress byte and D0 of the audioprocessor testing byte, several internal signals are available at the Navi pin. During this mode the input resistance of 100kΩ is disconnected from the pin. The internal signals available are shown in the Data-byte specification. 26/64 TDA7406 Stereodecoder part 5 Stereodecoder part 5.1 Features: ● No external components necessary ● PLL with adjustment free, fully integrated VCO ● Automatic pilot dependent MONO/STEREO switching ● Very high suppression of intermodulation and interference ● Programmable Roll-Off compensation ● Dedicated RDS-Softmute ● Highcut and Stereoblend-characteristics programmable in a wide range ● FM/AM noiseblanker with several threshold controls ● Multipath-detector with programmable internal/external influence ● I2C-bus control of all necessary functions ) s ( ct u d o r P e 5.2 Stereodecoder electrical characteristics Table 5. Stereodecoder electrical characteristics VS = 9V, de-emphasis time constant = 50µs, MPX input voltage VMPX = 500mV (75kHz deviation), modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise specified. t e l o Symbol Parameter Vin MPX Input Level Rin Input Resistance s ( t c u d o Min. Input Gain Gmax Max. Input Gain Gstep Step Resolution SVRR Supply Voltage Ripple Rejection a s b O Test Conditions Min. Typ. Max. Unit 0.5 1.25 Vrms 70 100 130 kΩ 1.5 3.5 4.5 dB 8.5 11 12.5 dB 1.75 2.5 3.25 dB Input Gain = 3.5dB Gmin e t e ol )- s b O Pr Vripple = 100mV, f = 1kHz Max. Channel Separation 30 60 dB 50 dB THD Total Harmonic Distortion fin=1kHz, mono S + N------------N Signal plus Noise to Noise Ratio A-weighted, S = 2Vrms 80 91 0.02 0.3 % dB MONO/STEREO-SWITCH VPTHST1 Pilot Threshold Voltage for Stereo, PTH = 1 10 15 25 mV VPTHST0 Pilot Threshold Voltage for Stereo, PTH = 0 15 25 35 mV VPTHMO1 Pilot Threshold Voltage for Mono, PTH = 1 7 12 17 mV VPTHMO0 Pilot Threshold Voltage for Mono, PTH = 0 10 19 25 mV 27/64 Stereodecoder part Table 5. TDA7406 Stereodecoder electrical characteristics (continued) VS = 9V, de-emphasis time constant = 50µs, MPX input voltage VMPX = 500mV (75kHz deviation), modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise specified. Symbol Parameter Test Conditions Min. Typ. Max. Unit PLL Δf/f Capture Range 0.5 % DEEMPHASIS and HIGHCUT τDeempFM De-emphasis Time constants FM MFM Highcut Time constant Multiplier FM VLEVEL >> VHCH 25 50 75 VLEVEL >> VHCH 44 62.5 80 µs VLEVEL >> VHCH 50 75 100 µs VLEVEL >> VHCH 70 100 130 µs VLEVEL > VHCH MAM REF5V -O High cut Time constant Multiplier VLEVEL > VHCH VLEVEL >> VHCH ) s ( ct 3 VLEVEL >> VHCH τDeempAM De-emphasis Time constants AM µs 37.5 µs 47 µs 56 µs 75 µs 3.7 4.7 5 5.3 V -1 0 +1 dB 5 6 7 dB 0.2 0.4 0.6 dB 17 20 23 %REF5V VSBLmax Max. Voltage for Mono 62 70 78 %REF5V VSBLstep Step Resolution 1.6 3.3 5.0 %REF5V VHCHmin Min. Voltage for NO Highcut bs 77 42 47 %REF5V VHCHmax Max. Voltage for NO Highcut 58 66 74 %REF5V VHCHstep Step Resolution 4.2 8.4 12.6 %REF5V VHCLmin Min. Voltage for FULL High cut 15 17 19 %VHCH VHCLmax Max. Voltage for FULL High cut 29 33 37 %VHCH VHCLstep Step Resolution 2.1 4.2 6.3 %REF5V 40 50 dB ct Lmin min. LEVEL Gain Lmaxs max. LEVEL Gain LGstep LEVEL Gain Step Resolution du ro P e VSBLmin Min. Voltage for Mono t e l o O Carrier and harmonic suppression at the output α19 Pilot Signalf=19kHz α38 Subcarrier f=38kHz 75 dB α57 Subcarrier f=57kHz 62 dB α76 Subcarrier f=76kHz 90 dB 28/64 TDA7406 Table 5. Stereodecoder part Stereodecoder electrical characteristics (continued) VS = 9V, de-emphasis time constant = 50µs, MPX input voltage VMPX = 500mV (75kHz deviation), modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise specified. Symbol Parameter Test Conditions Min. Typ. Max. Unit Intermodulation (Note 1) α2 fmod=10kHz, fspur=1kHz 65 dB α3 fmod=13kHz, fspur=1kHz 75 dB Traffic Radio (Note 2) α57 Signal f=57kHz ) s ( ct 70 dB SCA - Subsidiary Communications Authorization (Note 3) α67 Signal f=67kHz ACI - Adjacent Channel Interference (Note 4) α114 Signal f=114kHz α190 Signal f=190kHz du 75 e t e l o r P dB 95 dB 84 dB o s b Notes to the characteristics: 1. Intermodulation Suppression: O ) V O ( signal ) ( at1kHz ) α2 = --------------------------------------------------- ; f = (2 x 10kHz) - 19kHz V O ( spurious ) ( at1kHz ) s s ( t c u d o V O ( signal ) ( at1kHz ) - ; f = (3 x 13kHz) - 38kHz α3 = --------------------------------------------------V O ( spurious ) ( at1kHz ) s measured with: 91% pilot signal; fm = 10kHz or 13kHz. r P e 2. Traffic Radio (V.F.) Suppression: t e l o V O ( signal ) ( at1kHz ) α57 ( V.W > F. ) = ----------------------------------------------------------------------V O ( spurious ) ( at1kHz ± 23kHz ) measured with: 91% stereo signal; 9% pilot signal; fm= 1 kHz; 5% subcarrier (f = 57kHz, fm = 23Hz AM, m = 60%) s b O 3. SCA (Subsidiary Communications Authorization) V O ( signal ) ( at1kHz ) - ; F =(2 x 38kHz) - 67kHz α67 = --------------------------------------------------V O ( spurious ) ( at9kHz ) s measured with: 81% mono signal; 9% pilot signal; fm = 1kHz; 10%SCA - subcarrier ( fs = 67kHz, unmodulated ). 4. ACI ( Adjacent Channel Interference ): V O ( signal ) ( at1kHz ) α114 = --------------------------------------------------- ; F = 110kHz - (3 x 38kHz) V O ( spurious ) ( at4kHz ) s V O ( signal ) ( at1kHz ) α190 = --------------------------------------------------- ; Fs = 186kHz - (5 x 38kHz) V O ( spurious ) ( at4kHz ) measured with: 90% mono signal; 9% pilot signal; fm =1kHz; 1% spurious signal( fs = 110kHz or 186kHz, unmodulated). 29/64 Stereodecoder part 5.3 TDA7406 Dual MPX Usage 0.0.1 Feature Description The TDA7406 is able to support a twin tuner concept via the Dual-MPX-Mode. The DCVoltage at the CMPX-pin controls whether one or both MPX-signals are used to decode the stereo FM-signal. Therefor two window-comparators with a characteristic as shown in Figure 19 are implemented (Please note that the thresholds have a hysteresis of 500mV). In this mode the stereodecoder high impedance-mute mutes both inputs in parallel. Figure 19. Block diagram Dual MPX ) s ( ct u d o r P e t e l o ) (s t c u d o r P e t e l o s b O 30/64 s b O TDA7406 Noise blanker part 6 Noise blanker part 6.1 Features: ● AM and FM mode ● internal 2nd order 140kHz high-pass filter for MPX path ● internal rectifier and filters for AM-IF path ● programmable trigger thresholds ● trigger threshold dependent on high frequency noise with programmable gain ● additional circuits for deviation- and fieldstrength-dependent trigger adjustment ● 4 selectable pulse suppression times for each mode ● programmable noise rectifier charge/discharge current ) s ( ct u d o 6.2 Noise blanker electrical characteristics Table 6. Noise blanker electrical characteristics All parameters measured in FM mode if not otherwise specified. Symbol t e l o Parameter Test conditions bs ) s ( ct Trigger Threshold(1) VTR u d o so e t e l VTRNOISE b O VRECT -O meas.with VPEAK=0.9V Pr noise controlled Trigger Threshold Rectifier Voltage Deviation dependent VRECTDEV Rectifier Voltage r P e meas.with VPEAK=1.5V Min. Typ. Max. Unit 111 30 mVOP 110 35 mVOP 101 40 mVOP 100 45 mVOP 011 50 mVOP 010 55 mVOP 001 60 mVOP 000 65 mVOP 00 260 mVOP 01 220 mVOP 10 180 mVOP 11 140 mVOP VMPX=0mV 0.5 0.9 1.3 V VMPX=50mV, f=150kHz 1.5 1.7 2.1 V VMPX=200mV, f=150kHz 2 2.5 2.9 V 0.5 0.9 1.7 2.5 0.9 (off) 1.2 2.0 2.8 1.3 1.5 2.3 3.1 VOP VOP VOP VOP meas.with VMPX=500mV (75kHz dev.) 11 10 01 00 31/64 Noise blanker part Table 6. TDA7406 Noise blanker electrical characteristics (continued) All parameters measured in FM mode if not otherwise specified. Symbol Parameter Test conditions Min. Typ. Max. Unit 0.5 0.9 1.7 2.1 0.9 (off) 1.4 1.9 2.4 1.3 1.5 2.3 3.1 V V V V meas.with VMPX=0mV, VLEVEL Receive-Mode (Chip could be programmed by µP) “1” -> Transmission-Mode (Data could be received by µP) ACK = Acknowledge P = Stop MAX CLOCK SPEED 500kbits/s 13.1.1 ) s ( ct DATA 1...DATA n s b O If bit I in the subaddress byte is set to “1”, the auto increment of the subaddress is enabled. 13.1.2 t c u TRANSMITTED DATA (send mode) d o r MSB P e X X LSB X X X P ST SM t e l o s b O 13.1.3 SM = Soft mute activated ST = Stereo P = Pause X = Not Used The transmitted data is automatically updated after each ACK. Transmission can be repeated without new chip address. 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 LSB 1 1 1 1 1 1 0 The programming after POR is marked bold-face / underlined in the programming tables. With this programming all the outputs are muted to VREF (VOUT= VDD/2). 45/64 I2C bus interface 13.2 TDA7406 Subaddress (receive mode) Table 8. Subaddress (receive mode) MSB LSB FUNCTION I2 I1 I0 A4 A3 A2 A1 A0 0 1 0 1 ) s ( ct 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 1 1 1 1 1 1 1 1 d o r t e l o s b O 46/64 0 0 0 0 10 0 0 0 1 1 1 1 1 1 1 1 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 0 0 1 1 1 1 ) (s t c u P e Audioprocessor Testmode off on AutoZero Remain off on Auto-Increment Mode off on Subaddress Source Selector Loudness Volume EQ Filter 1 (62/100Hz) EQ Filter 2 (157Hz) EQ Filter 3 (396Hz) EQ Filter 4 (1kHz) EQ Filter 5 (2.51kHz) EQ Filter 6 (4/6.34kHz) EQ Filter 7 (15/16kHz) Mixing Programming SoftMute Subwoofer / Spectrum analyzer / HighPass Configuration Audioprocessor I Configuration Audioprocessor II Speaker attenuator LF Speaker attenuator RF Speaker attenuator LR Speaker attenuator RR Subwoofer attenuator Mixing Level Control Testing Audioprocessor Stereodecoder Noise-Blanker I Noise-Blanker II AM / AM-Noiseblanker High-Cut Control Fieldstrength & Quality Multipath-Detector Stereodecoder Adjustment Configuration Stereodecoder Testing Sterodecoder 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 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 0 1 0 1 0 1 0 1 s b O t e l o r P e u d o TDA7406 13.3 I2C bus interface Data byte specification The status after Power-On-Reset is marked bold-face / underlined in the programming tables. Table 9. Input Selector (0) MSB LSB FUNCTION D7 D6 D5 0 0 : 1 1 0 0 : 1 1 D4 0 1 0 0 : 1 1 Table 10. D5 t e l o s b O 0 0 1 1 0 1 D1 D0 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 Source Selector CDC/PD CD MD Tape Phone Navi Tuner TIM Input Gain 0dB 1dB : 14dB 15dB Mute off on ) s ( ct u d o r P e t e l o ) (s s b O t c u od r P e D6 D2 0 1 : 0 1 Loudness (1) MSB D7 D3 LSB FUNCTION D4 D3 D2 D1 D0 0 0 : 0 0 : 1 : 0 0 : 1 1 : 0 : 0 0 : 1 1 : 0 : 0 0 : 1 1 : 1 : 0 1 : 0 1 : 1 : Attenuation 0 dB -1 dB : -14 dB -15 dB : -19 dB not allowed Center Frequency 200Hz 400Hz 600Hz 800Hz Loudness Order First Order Second Order 47/64 I2C bus interface TDA7406 Table 11. Volume (2) MSB LSB ATTENUATION Note: D7 D6 D5 D4 D3 D2 D1 D0 0 0 : 0 0 0 : 0 0 0 : 1 1 0 0 : 0 0 0 : 0 1 1 : 1 1 0 0 : 0 0 0 : 1 0 0 : 0 0 0 0 : 1 1 1 : 1 0 0 : 1 1 0 0 : 1 1 1 : 1 0 0 : 1 1 0 0 : 0 0 0 : 1 0 0 : 1 1 0 0 : 0 0 1 : 1 0 0 : 1 1 0 1 : 0 1 0 : 1 0 1 : 0 1 ) s ( ct u d o r P e It is not recommended to use a gain more than 20dB for system performance reason. In general, the max. gain should be limited by software to the maximum value, which is needed for the system. Table 12. Equalizer (3,4,5,6,7,8,9) MSB D7 D6 D5 D4 0 0 : 0 0 1 1 : 1 1 r P e t e l o s b O 0 0 1 1 0 1 0 1 )- t e l o s b O LSB D3 D2 D1 D0 0 0 : 1 1 1 1 : 0 0 0 0 : 1 1 1 1 : 0 0 0 0 : 1 1 1 1 : 0 0 0 1 : 0 1 1 0 : 1 0 s ( t c u d o 48/64 Gain/Attenuation (+32.0dB) (+31.5dB) : +20.0dB +19.5dB +19.0dB : +0.5dB 0.0dB -0.5dB : -79.0dB -79.5dB FUNCTION Equalizer cut/boost level -15dB -14dB : -1dB 0dB 0dB +1dB : +14dB +15dB Equalizer Q-Factor 2.2 1.8 1.4 1.0 0 1 Equalizer Center Frequency (only Subaddresses 3,8,9) 62Hz(addr 3)/4kHz(addr 8)/15kHz(addr 9) 100Hz(addr 3)/6.24kHz(addr 8)/16kHz(addr 9) 0 1 DC mode EQ Band 1 (62/100 Hz, Subaddress. 4!) on off TDA7406 I2C bus interface Table 13. Mixing Programming (10) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 0 1 1 0 1 0 1 0 1 0 1 1 SoftMute (11) )- MSB D6 D5 D4 D3 r P e t e l o s b O 0 0 1 1 0 1 0 1 s b O LSB D1 0 1 0 1 FUNCTION D0 0 1 0 0 1 1 0 1 0 1 D2 s ( t c u d o 0 1 u d o t e l o 0 1 D7 ) s ( ct r P e 0 1 Table 14. Mixing Mute enable Mixing Source Beep Phone Navi Tuner / TIM Mixing Target Speaker LF off Speaker LF on Speaker RF off Speaker RF on Speaker LR off Speaker LR on Speaker RR off Speaker RR on must be “1” SoftMute On (Mute) Off SoftMute Time Mute time = 0.48ms Mute time = 0.96ms Mute time = 123ms Mute time = 324 ms Influence on Stereodecoder Highohmic-Mute on off Influence on Pilot-detector Hold and MP-Hold on off Influence on SoftMute on off Beep Frequencies 600 Hz 780 Hz 1.56 kHz 2.4 kHz 49/64 I2C bus interface TDA7406 Table 15. Subwoofer Configuration / Spectrum Analyzer / HighPass (12) MSB LSB FUNCTION D7 D6 D5 D4 D3 0 0 1 1 D2 D1 D0 0 0 1 1 0 1 0 1 Subwoofer Coupling AC using SWIn pin AC using MixInR pins AC using SWIn pin DC 0 1 0 1 r P e t e l o High Pass Enable Filter off Filter on 0 1 0 1 0 1 Table 16. ) (s P e D7 D6 s b O High Pass Cut-Off-Frequency 90Hz 135Hz 180Hz 215Hz t c u Configuration Audioprocessor I (13) d o r MSB D5 LSB FUNCTION D4 D3 D2 D1 let o s b 0 1 0 1 0 0 1 1 50/64 D0 0 1 O 0 1 0 1 ) s ( ct u d o Spectrum Analyzer Q-Factor 3.5 1.8 0 1 0 0 1 1 Subwoofer Filter off 80Hz 120Hz 160Hz CDC Input Mode single ended pseudo differential CDC Input Gain -6 dB 0 dB SoftStep Volume off on SoftStep Time 320µs 1.28ms 5.12ms 20.4ms TDA7406 I2C bus interface Table 16. Configuration Audioprocessor I (13) (continued) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 Loudness flat filter ON 0 1 Mixing Selector Tuner/TIM Switch TIM Tuner 0 1 Tuner Selection AM Stereodecoder 0 1 Table 17. ) s ( ct u d o Configuration Audioprocessor II (14) MSB r P e LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 ) (s t c u od r P e t e l o bs O 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 t e l o Pause Detector off on s b O 0 1 0 1 Pause ZC Window 160mV 80mV 40mV not allowed Front Speaker Mixing ACIn and MixIn AC coupling (MixIn) AC coupling (ACIn) DC coupling Rear Speaker Mixing ACIn and MixIn AC coupling (MixIn) AC coupling (ACIn) DC coupling must be “1” 51/64 I2C bus interface TDA7406 Table 18. Speaker and Subwoofer Level Control (15,16,17,18,19) MSB LSB ATTENUATION D7 D6 D5 D4 D3 D2 D1 D0 0 : 0 0 0 0 : 0 : 0 : 1 : 1 : 1 1 0 : 0 0 0 0 : 1 : 1 : 0 : 0 : 0 1 0 : 0 0 1 1 : 0 : 1 : 0 : 1 : 1 X 1 : 0 0 0 0 : 0 : 0 : 0 : 0 : 1 X 1 : 0 0 0 0 : 0 : 0 : 0 : 0 : 1 X 1 : 0 0 0 0 : 0 : 0 : 0 : 0 : 1 X 1 : 1 0 0 1 : 0 : 0 : 0 : 0 : 1 X ) (s 0 1 Table 19. od r P e t e l o 1 bs O 52/64 1 1 0 0 : 0 0 : 0 0 X D6 0 : 0 0 0 0 : 0 0 : 1 1 1 r P e t e l o -79dB Mute s b O SoftStep On/Off On Off t c u LSB ATTENUATION D5 D4 D3 D2 D1 D0 0 : 0 0 0 0 : 0 0 : 0 0 1 0 : 0 0 0 0 : 0 1 : 0 0 X 1 : 0 0 0 0 : 1 0 : 1 1 X 1 : 0 0 0 0 : 1 0 : 1 1 X 1 : 0 0 0 0 : 1 0 : 1 1 X 1 : 1 0 0 1 : 1 0 : 0 1 X Gain/Attenuation +15dB : + 1dB 0dB 0dB - 1dB : -15dB -16dB : -78dB -79dB Mute ) s ( ct u d o Mixer Level Control (20) MSB D7 Gain/Attenuation +15dB : + 1dB 0dB 0dB - 1dB : -16dB : -32dB : -48dB : -64dB TDA7406 I2C bus interface Table 20. Testing Audioprocessor (21) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 1 0 1 0 1 X 0 1 X X X 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 1 1 1 0 0 0 1 1 0 1 O bs ) s ( ct u d o r P e t e l o Clock external internal O ) AZ Function off on s ( t c u d o SC-Clock Fast Mode Normal Mode r P e t e l o Note: Test-Multiplexer Spectrum Analyzer Filter 62Hz Spectrum Analyzer Filter 157Hz Spectrum Analyzer Filter 400Hz Spectrum Analyzer Filter 1kHz Spectrum Analyzer Filter 2.51kHz Spectrum Analyzer Filter 6.34kHz Spectrum Analyzer Filter 16kHz Not Allowed not used 200kHz Oscillator NB-Hold internal Reference 0 0 1 1 0 0 1 0 0 1 0 1 bs 0 1 0 1 Audioprocessor Testmode off on This byte is used for testing or evaluation purposes only and must not set to other values than “11111110” in the application! Table 21. Stereodecoder (22) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 0 1 1 0 1 0 1 0 1 STD Unmuted STD Muted IN-Gain 11dB IN-Gain 8.5dB IN-Gain 6dB IN-Gain 3.5dB Stereodecoder Input AM MPX 53/64 I2C bus interface TDA7406 Table 21. Stereodecoder (22) (continued) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 Forced MONO MONO/STEREO switch automatically 0 1 0 0 1 1 Pilot Threshold HIGH Pilot Threshold LOW De-emphasis 50µs (37.5µs(1)) De-emphasis 62.5µs (46.9µs(1)) De-emphasis 75µs (56.3µs(1)) De-emphasis 100µs (75µs(1)) 0 1 0 1 ) s ( ct 1. If De-emphasis-Shift enabled (Subaddr.26/Bit7 = 0) Table 22. u d o Noiseblanker I (23) MSB r P e LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 ) (s t c u d o r P e t e l o bs O 54/64 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 t e l o Noiseblanker off Noiseblanker on s b O 0 1 0 1 0 1 0 1 Low Threshold 65mV Low Threshold 60mV Low Threshold 55mV Low Threshold 50mV Low Threshold 45mV Low Threshold 40mV Low Threshold 35mV Low Threshold 30mV Noise Controlled Threshold 320mV Noise Controlled Threshold 260mV Noise Controlled Threshold 200mV Noise Controlled Threshold 140mV Over deviation Adjust 2.8V Over deviation Adjust 2.0V Over deviation Adjust 1.2V Over deviation Detector OFF TDA7406 I2C bus interface Table 23. Noiseblanker II (24) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 0 1 1 0 0 1 1 0 0 1 1 ) (s t c u d o r D6 D5 D4 P e s b O D3 0 0 0 0 1 1 1 1 s b O 0 0 1 1 D2 LSB FUNCTION D1 D0 0 1 t e l o 1 r P e AM / FM-Noiseblanker (25) MSB 1 u d o t e l o 0 1 D7 ) s ( ct 0 1 0 1 0 1 0 1 Table 24. 0 1 0 1 PEAK charge current low high Fieldstrength adjust 2.3V 1.8V 1.3V OFF Blank Time FM / AM 38µs / 1.2ms 25.5µs / 800µs 32µs / 1.0s 22µs / 640µs Noise Rectifier Discharge Resistor R = infinite RDC = 56k RDC = 33k RDC = 18k Strong Multipath influence on PEAK 18k off on (18k discharge if VMPout< 2.5V) 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 Stereodecoder Mode FM AM AM Rectifier Gain 6dB 8dB 10dB 12dB 14dB 16dB 18dB 20dB Rectifier Cut-Off Frequency 14.0kHz 18.5kHz 28.0kHz 56.0kHz must be “1” 55/64 I2C bus interface TDA7406 Table 25. High-Cut (26) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 t e l o )- u d o s ( t c s b O 56/64 s b O De-emphasis Shift On Off ) s ( ct u d o r P e VHCL to be at 16.7% VHCH 22.2% VHCH 27.8% VHCH 33.3% VHCH 0 1 t e l o max. High-Cut 2dB 5dB 7dB 10dB VHCH to be at 42% REF5V 50% REF5V 58% REF5V 66% REF5V 0 1 0 1 r P e 0 1 0 1 High-Cut off on TDA7406 I2C bus interface Table 26. Fieldstrength Control (27) MSB LSB FUNCTION D7 D6 D5 D4 0 0 1 1 0 0 1 1 0 1 0 1 Table 27. O bs D2 D1 D0 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 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 ) (s ) s ( ct u d o r P e t e l o Quality Detector Coefficient a=0.7 a=0.85 a=1.0 a=1.15 t c u HCC-Level-Shift (only Level through MPD) 0.0V 500mV 1.0 V 1.5 V Multipath Detector (28) MSB D7 VSBL to be at 20.0% REF5V 23.3% REF5V 26.6% REF5V 30.0% REF5V 33.3% REF5V 36.6% REF5V 40.0% REF5V 43.3% REF5V 46.6% REF5V 50.0% REF5V 53.3% REF5V 56.6% REF5V 60.0% REF5V 63.3% REF5V 66.6% REF5V 70.0% REF5V s b O d o r P e t e l o 0 1 0 1 D3 LSB FUNCTION D6 D5 D4 D3 D2 D1 D0 0 1 0 0 1 1 0 1 0 1 Fast Load on off Bandpass Gain 6dB 12dB 16dB 18dB 57/64 I2C bus interface TDA7406 Table 27. Multipath Detector (28) (continued) MSB LSB FUNCTION D7 D6 D5 D4 D3 0 0 1 1 0 1 0 1 D2 D1 D0 Rectifier Gain Gain = 7.6dB Gain = 4.6dB Gain = 0dB disabled Charge Current at MP-Out 0.25µA 0.50µA 0 1 0 1 u d o Table 28. Stereodecoder Adjustment (29) MSB D6 D5 D4 D3 ) (s t c u d o r P e t e l o 1 1 1 : 1 : 1 0 0 0 : 1 58/64 0 0 0 : 1 0 0 1 : 1 D2 0 1 0 : 1 t e l o s b O LSB 0 0 0 : 0 : 0 s b O r P e Multipath influence on PEAK Discharge off -1V/ms 0 1 D7 ) s ( ct Multipath on High-Cut Decay-Time 2ms 10ms D1 FUNCTION D0 0 0 0 : 1 : 1 0 0 1 : 0 : 1 0 1 0 : 0 : 1 Roll-Off Compensation not allowed 7.2% 9.4% : 13.7% : 20.2% 0 0 0 : 1 : 1 0 0 1 : 0 : 1 0 1 0 : 0 : 1 not allowed 19.6% 21.5% : 25.3% : 31.0% LEVEL Gain 0dB 0.4dB 0.8dB : 6dB TDA7406 I2C bus interface Table 29. Stereodecoder Configuration (30) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 1 0 1 1 x 1 x 0 1 1 1 1 1 Multipath Influence on High-Cut On Off Multipath Influence on Stereo-Blend On Off Level-Input over Multipath-Detector(1) On Off Dual MPX Mode On Off must be “1” ) s ( ct r P e 1. Using the Multipath Time-Constants for Stereo-Bland and High-Cut Table 30. Testing Stereodecoder(31) MSB D7 D6 D5 D4 D3 D2 ) (s ct du s b O e t e ol t e l o LSB o r P 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 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 s b O D1 D0 0 1 0 1 u d o FUNCTION Main Testmode off on Stereodecoder Testmode off on Test signals F228 NB threshold Level for Stereo-Blend Pilot magnitude VHCCL Pilot threshold VHCCH REF5V HOLDN NB Peak AM-Rectifier VCOCON; VCO Control Voltage VSBL Pilot threshold Level for High-Cut REF5V 59/64 I2C bus interface TDA7406 Table 30. Testing Stereodecoder(31) (continued) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 Audioprocessor Oscillator Off On 0 1 1 Note: must be “1” This byte is used for testing or evaluation purposes only and must not be set to other values than “11111100” in the application! ) s ( ct u d o r P e t e l o ) (s t c u d o r P e t e l o s b O 60/64 s b O TDA7406 14 Application diagram Application diagram Figure 31. Application Diagram ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 61/64 Package information 15 TDA7406 Package information In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 32. TQFP44 Mechanical Data & Package Dimensions mm MIN. TYP. A 0.05 A2 1.35 B 0.30 C 0.09 D 11.80 D1 9.80 D3 MIN. TYP. 0.15 0.002 1.40 1.45 0.053 0.055 0.057 0.37 0.45 0.012 0.015 0.018 0.20 0.004 12.00 12.20 0.464 0.472 0.480 10.00 10.20 0.386 0.394 0.401 0.315 11.80 12.00 12.20 0.464 0.472 9.80 10.00 10.20 0.386 0.394 8.00 0.80 L ) (s 0.315 ct 0.45 0.60 du 0.75 o r P t e l o s b O 0.480 0.401 0.031 0.018 1.00 k r P e 0.008 E e u d o 0.006 E1 E3 OUTLINE AND MECHANICAL DATA MAX. 0.063 8.00 L1 0.024 0.030 TQFP44 (10 x 10 x 1.4mm) 0.039 0˚(min.), 3.5˚(typ.), 7˚(max.) D D1 A A2 o s b A1 23 33 34 22 O 0.10mm .004 B B E1 Seating Plane E e t e l MAX. 1.60 A1 ) s ( ct inch DIM. 12 44 11 1 C L e K TQFP4410 0076922 D 62/64 TDA7406 16 Revision history Revision history Table 31. Document revision history Date Revision 04-Sep-2006 1 Changes Initial release. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 63/64 TDA7406 ) s ( ct Please Read Carefully: u d o Information in this document is provided solely in connection with ST products. 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