TFA9879 NXP Semiconductors, TFA9879 Datasheet - Page 60

• Manufacturer Part Number: TFA9879
• Description: The TFA9879 contains a processor that supports a range of sound processing featuresincluding a 5-band parametric equalizer, separate bass and treble control, a dynamicrange compressor, soft clip control and volume control
• Manufacturer: NXP Semiconductors

NXP Semiconductors
21. Contents
1
2
3
3.1
3.2
3.3
4
5
6
7
8
8.1
8.2
9
9.1
9.1.1
9.1.2
9.2
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5
9.2.5.1
9.2.5.2
9.2.6
9.2.7
9.2.8
9.2.9
9.2.10
9.2.10.1
9.2.10.2
9.2.11
9.3
9.4
9.4.1
9.4.2
9.4.3
9.4.4
9.4.5
9.4.6
10
10.1
10.2
10.3
10.4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Quick reference data . . . . . . . . . . . . . . . . . . . . . 3
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 6
I
2
C-bus interface and register settings . . . . . 24
Programmable Digital Sound Processor (DSP) 2
Interface format support for digital audio inputs 2
Supported Digital audio data formats . . . . . . . . 8
De-emphasis . . . . . . . . . . . . . . . . . . . . . . . . . 11
Zero-crossing volume control . . . . . . . . . . . . . 18
Dynamic Range Compressor (DRC) . . . . . . . 18
Class-D amplification and clip control. . . . . . . 22
UnderFrequency Protection (UFP) . . . . . . . . . 23
OverFrequency Protection (OFP) . . . . . . . . . . 24
I
I
I
Top-level register map . . . . . . . . . . . . . . . . . . 26
General features . . . . . . . . . . . . . . . . . . . . . . . . 1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operating modes . . . . . . . . . . . . . . . . . . . . . . . 7
Power-up/power-down . . . . . . . . . . . . . . . . . . . 7
Digital Signal Processor (DSP) features. . . . . 11
Serial interface selection . . . . . . . . . . . . . . . . 11
Mono selection . . . . . . . . . . . . . . . . . . . . . . . . 11
Programmable high-pass filter . . . . . . . . . . . . 11
Equalizer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Equalizer band function . . . . . . . . . . . . . . . . . 12
Equalizer band control . . . . . . . . . . . . . . . . . . 14
Bass and treble control . . . . . . . . . . . . . . . . . . 16
Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Digital volume control . . . . . . . . . . . . . . . . . . . 18
Functional description. . . . . . . . . . . . . . . . . . . 19
DRC control . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power limiter . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
OverTemperature Protection (OTP) . . . . . . . . 23
OverCurrent Protection (OCP) . . . . . . . . . . . . 23
Invalid Bit-clock Protection (IBP) . . . . . . . . . . 24
Overview of protection circuits . . . . . . . . . . . . 24
2
2
2
C-bus interface. . . . . . . . . . . . . . . . . . . . . . . 24
C-bus write cycle . . . . . . . . . . . . . . . . . . . . . 25
C-bus read cycle . . . . . . . . . . . . . . . . . . . . . 26
Mono BTL class-D audio amplifier with digital input
10.4.1
10.4.2
10.4.3
10.4.4
10.4.5
10.4.6
10.4.7
10.4.8
10.4.9
10.4.10
11
12
13
14
14.1
14.2
14.3
14.4
14.5
15
15.1
15.1.1
15.1.2
15.2
15.3
15.4
15.4.1
15.4.2
15.5
15.6
16
17
17.1
17.2
17.3
17.4
18
19
19.1
19.2
19.3
19.4
20
21
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2010.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Internal circuitry . . . . . . . . . . . . . . . . . . . . . . . 36
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 37
Thermal characteristics . . . . . . . . . . . . . . . . . 38
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 39
Application information . . . . . . . . . . . . . . . . . 44
Package outline. . . . . . . . . . . . . . . . . . . . . . . . 53
Soldering of SMD packages . . . . . . . . . . . . . . 54
Revision history . . . . . . . . . . . . . . . . . . . . . . . 57
Legal information . . . . . . . . . . . . . . . . . . . . . . 58
Contact information . . . . . . . . . . . . . . . . . . . . 59
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Device control . . . . . . . . . . . . . . . . . . . . . . . . 27
Serial interface control . . . . . . . . . . . . . . . . . . 28
Equalizer configuration . . . . . . . . . . . . . . . . . 30
Bypass control . . . . . . . . . . . . . . . . . . . . . . . . 31
Dynamic range compressor . . . . . . . . . . . . . . 31
Bass and treble control . . . . . . . . . . . . . . . . . 32
High-pass filter . . . . . . . . . . . . . . . . . . . . . . . . 32
Volume control . . . . . . . . . . . . . . . . . . . . . . . . 33
De-emphasis, soft/hard mute and power
limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Miscellaneous status . . . . . . . . . . . . . . . . . . . 34
DC Characteristics . . . . . . . . . . . . . . . . . . . . . 39
AC characteristics . . . . . . . . . . . . . . . . . . . . . 40
I
I
PCM/IOM2 timing characteristics. . . . . . . . . . 43
Power capability. . . . . . . . . . . . . . . . . . . . . . . 44
Estimating the RMS output power (P
Output current limiting . . . . . . . . . . . . . . . . . . 45
PWM output filtering. . . . . . . . . . . . . . . . . . . . 45
Supply decoupling and filtering . . . . . . . . . . . 45
PCB layout considerations. . . . . . . . . . . . . . . 46
EMC considerations. . . . . . . . . . . . . . . . . . . . 46
Thermal considerations . . . . . . . . . . . . . . . . . 46
Typical application diagram (simplified) . . . . . 47
Curves measured in reference design
(demonstration board) . . . . . . . . . . . . . . . . . . 48
Introduction to soldering. . . . . . . . . . . . . . . . . 54
Wave and reflow soldering. . . . . . . . . . . . . . . 54
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 54
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 55
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 58
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 59
2
2
C timing characteristics . . . . . . . . . . . . . . . . 41
S timing characteristics . . . . . . . . . . . . . . . . 42
Date of release: 15 October 2010
Document identifier: TFA9879
TFA9879
All rights reserved.
o(RMS)
) . 44