TDA7729_07March2013.pdf

发布时间：2022-05-29 发布人：admin 分类：说明书资料大小：1.39M 资料格式：pdf 举报版权申诉

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Table 1. Device summary

1 Block circuit diagram

Figure 1. Block circuit diagram

2 Pin description

2.1 Pin connection

Figure 2. Pin connection (top view)

2.2 Pin description

Table 2. Pin description

3 Electrical specifications

3.1 Thermal data

Table 3. Thermal data

3.2 Absolute maximum ratings

Table 4. Absolute maximum ratings

3.3 Electrical characteristics

Table 5. Electrical characteristics

4 Description

4.1 Input configuration

4.1.1 Front and rear selector

Table 6. Input pin configuration

Table 7. Selector configuration matrix

Figure 3. QD and FD configuration of QD4/FD4

4.1.2 Direct path

4.2 Mixing

Figure 4. Block diagram of mixing stage

Table 8. Available sources for mixing

4.3 Loudness

4.3.1 Loudness attenuation

Figure 5. Loudness attenuation @ fP = 400 Hz.

4.3.2 Peak frequency

Figure 6. Loudness center frequencies @ Attn. = 15 dB.

4.3.3 High frequency boost

Figure 7. Loudness attenuation, fc =2.4 kHz

4.3.4 Flat mode

4.4 SoftMute

Figure 8. SoftMute timing

4.5 Softstep volume

4.6 Bass

4.6.1 Bass attenuation

Figure 9. Bass Control @ fc = 80 Hz, Q = 1

4.6.2 Bass center frequency

Figure 10. Bass center frequencies @ gain = 14 dB, Q = 1

4.6.3 Bass quality factors

Figure 11. Bass quality factors @ gain = 14 dB, fc = 80 Hz

4.6.4 DC mode

Figure 12. Bass normal and DC mode @ Gain = 14 dB, fc = 80 Hz

4.7 Middle

4.7.1 Middle attenuation

Figure 13. Middle control @ fc = 1 kHz, Q = 1

4.7.2 Middle center frequency

Figure 14. Middle center frequencies @ gain = 14d B, Q = 1

4.7.3 Middle quality factors

Figure 15. Middle quality factors @ gain = 14 dB, fc = 1 kHz

4.8 Treble

4.8.1 Treble attenuation

Figure 16. Treble Control @ fc = 17.5 kHz.

4.8.2 Treble center frequency

Figure 17. Treble center frequencies @ gain = 14 dB

4.9 Subwoofer Filter

Figure 18. Subwoofer control

4.10 Softstep control

4.11 Level meter and beep input

4.12 Output gain control

4.13 Audioprocessor testing

5 I2C bus specification

5.1 Interface protocol

Figure 19. Switching characteristics

Table 9. I2C bus electrical characterisitics

Figure 20. I2C timing diagram

5.1.1 Receive mode

5.1.2 Transmission mode

5.1.3 Reset condition

Table 10. Subaddress (receive mode)

5.2 Data byte specification

Table 11. Input configuration / main selector (0)

Table 12. 2nd Source selector / direct path (1)

Table 13. Mixing source / mixing gain (2)

Table 14. Mix control / level meter (3)

Table 15. Soft mute / others (4)

Table 16. SoftStep I (5)

Table 17. SoftStep II (6)

Table 18. Loudness (7)

Table 19. Volume / output gain (8)

Table 20. Treble filter (9)

Table 21. Middle filter (10)

Table 22. Bass filter (11)

Table 23. Subwoofer / middle / bass (12)

Table 24. Speaker attenuation (LF/RF/LR/RR) (13-16)

Table 25. Subwoofer attenuation (subwoofer L/subwoofer R) (17-18)

6 Package information

Figure 21. TSSOP28 mechanical data and package dimensions

7 Revision history

Table 26. Document revision history

TDA7729 3 band car audio processor Datasheet - production data – Center frequency programmable in 4 steps – -15 to 15dB range with 1dB resolution  Speaker – 4 independent soft step speaker controls – 0dB to -79dB with 1dB steps – Direct mute  Subwoofer – 2nd order low pass filter with programmable cut off frequency – 2 independent soft step level control,  Mute functions – Direct mute – Digitally controlled SoftMute with 4 programmable mute-times  Level meter – Provide rectified level voltage of main source signal (before loudness)  Rear seat selector – Full source selector for rear seat output  Mixing selector Description The TDA7729 is a high performance signal processor specifically designed for car radio applications. The device includes a high performance audioprocessor with fully integrated audio filters and new Soft Step architecture. The digital control allows programming in a wide range of filter characteristics. By the use of BCMOS- process and liner signal processing low distortion and low noise are obtained. Table 1. Device summary Order code TDA7729 TDA7729TR Package TSSOP28 TSSOP28 Packing Tube Tape and reel TSSOP28 Features  Input multiplexer – Multiple input configuration for different application  Loudness – 2nd order frequency response – Programmable center frequency – 15 dB with 1 dB steps – Selectable high frequency boost – Selectable flat-mode  Volume – +15 dB to -15 dB with 1 dB step resolution – Soft-step control with programmable blend times  Bass – 2nd order frequency response – Center frequency programmable in 4 steps – Q programmable 1.0/1.25/1.5/2.0 – DC gain programmable – -15 to 15 dB range with 1 dB resolution  Middle – 2nd order frequency response – Center frequency programmable in 4 steps – Q programmable 0.5/0.75/1.0/1.25 – -15 to 15dB range with 1dB resolution  Treble – 2nd order frequency response 7 March 2013 This is information on a product in full production. DocIDXXXXXX Rev 1 1/42 www.st.com 1

Contents Contents TDA7729 1 2 3 4 Block circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 3.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 4.2 4.3 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1 4.1.1 Front and rear selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1.2 Direct path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Loudness attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4.3.1 Peak frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4.3.2 4.3.3 High frequency boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.3.4 Flat mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SoftMute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Softstep volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Bass attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.6.1 4.6.2 Bass center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Bass quality factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.6.3 4.6.4 DC mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Middle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Middle attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.7.1 4.7.2 Middle center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.7.3 Middle quality factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.4 4.5 4.6 4.7 4.8 2/42 DocIDXXXXXX Rev 1

TDA7729 Contents Treble attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.8.1 4.8.2 Treble center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.9 Subwoofer Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.10 Softstep control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.11 Level meter and beep input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.12 Output gain control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.13 Audioprocessor testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 I2C bus specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.1 5.1.1 Receive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Transmission mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.1.2 5.1.3 Reset condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5.2 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5 6 7 DocIDXXXXXX Rev 1 3/42

List of tables List of tables TDA7729 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 1. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 2. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 5. Input pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 6. Selector configuration matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 7. Available sources for mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 8. I2C bus electrical characterisitics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Table 9. Subaddress (receive mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Table 10. Input configuration / main selector (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Table 11. Table 12. 2nd Source selector / direct path (1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Table 13. Mixing source / mixing gain (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Table 14. Mix control / level meter (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Soft mute / others (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Table 15. SoftStep I (5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Table 16. Table 17. SoftStep II (6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Loudness (7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Table 18. Volume / output gain (8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Table 19. Table 20. Treble filter (9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Table 21. Middle filter (10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Bass filter (11). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Table 22. Subwoofer / middle / bass (12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Table 23. Speaker attenuation (LF/RF/LR/RR) (13-16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Table 24. Table 25. Subwoofer attenuation (subwoofer L/subwoofer R) (17-18) . . . . . . . . . . . . . . . . . . . . . . . . 39 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Table 26. 4/42 DocIDXXXXXX Rev 1

TDA7729 List of figures List of figures Block circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 1. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 2. QD and FD configuration of QD4/FD4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 3. Block diagram of mixing stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 4. Loudness attenuation @ fP = 400 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 5. Loudness center frequencies @ Attn. = 15 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 6. Loudness attenuation, fc =2.4 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 7. SoftMute timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 8. Figure 9. Bass Control @ fc = 80 Hz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 10. Bass center frequencies @ gain = 14 dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 11. Bass quality factors @ gain = 14 dB, fc = 80 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 12. Bass normal and DC mode @ Gain = 14 dB, fc = 80 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 13. Middle control @ fc = 1 kHz, Q = 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 14. Middle center frequencies @ gain = 14d B, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 15. Middle quality factors @ gain = 14 dB, fc = 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 16. Treble Control @ fc = 17.5 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 17. Treble center frequencies @ gain = 14 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 18. Subwoofer control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 19. Switching characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 I2C timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Figure 20. Figure 21. TSSOP28 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 DocIDXXXXXX Rev 1 5/42

Block circuit diagram TDA7729 1 Block circuit diagram Figure 1. Block circuit diagram 6/42 DocIDXXXXXX Rev 1

TDA7729 2 Pin description 2.1 Pin connection Pin description Figure 2. Pin connection (top view) 2.2 No. 1 2 3 4 5 6 7 8 9 Pin description Pin name QD1L / SE1L / MD3+ QD1R / SE1R / MD3- QD1G / SE2L QD2G / SE2R QD2L / SE3L QD2R / SE3R QD3L QD3G QD3R Table 2. Pin description Description QD1 left input or SE1 left or MD3 positive input QD1 right input or SE1 right input or MD3 negative input QD1 common input or SE2 left input QD2 common input or SE2 right input QD2 left input or SE3 left input QD2 right input or SE3 right input QD3 left input QD3 common input QD3 right input DocIDXXXXXX Rev 1 I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O 7/42

Pin description TDA7729 Table 2. Pin description (continued) Description Pin name No. 10 QD4L / FD4L+ / SE4L / MD1+ QD4 left input or FD4L positive input or SE4 left input or MD1 positive input 11 QD4G / FD4L- / SE4R / MD1- QD4 common input or FD4L negative input or SE4 right input or MD1 negative input 12 QD4G / FD4R- / SE5L / MD2- QD4 common input or FD4R negative input or SE5 left input or MD2 negative input 13 QD4R / FD4R+ / SE5R / MD2+ QD4 right input or FD4R positive input or SE5 right input or MD2 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 CREF GND OUTR2 OUTL2 OUTRF OUTRR OUTLR OUTLF N.C. MUTE VDD SCL SDA LMOUT Beep positive input Reference capacitor Ground Subwoofer output / 2nd right output Subwoofer output / 2nd left output Front right output Rear right output Rear left output Front left output Floating I2C bus data Supply I2C bus clock I2C bus data Level meter output Beep input (Mono Single-Ended input) I/O I/O I/O I/O I/O O S O O O O O O N.C. I/O S I I/O O I 8/42 DocIDXXXXXX Rev 1

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