CN101505167B - Audio encoding and decoding module for mobile terminal - Google Patents

Audio encoding and decoding module for mobile terminal Download PDF

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Publication number
CN101505167B
CN101505167B CN200810188223XA CN200810188223A CN101505167B CN 101505167 B CN101505167 B CN 101505167B CN 200810188223X A CN200810188223X A CN 200810188223XA CN 200810188223 A CN200810188223 A CN 200810188223A CN 101505167 B CN101505167 B CN 101505167B
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sequence number
pins
pin
path
output
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CN200810188223XA
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Chinese (zh)
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CN101505167A (en
Inventor
刘彬
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BEIJING MOBILEXP TECHNOLOGY Co Ltd
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BEIJING MOBILEXP TECHNOLOGY Co Ltd
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  • Telephone Function (AREA)
  • Headphones And Earphones (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Transceivers (AREA)

Abstract

The invention provides an audio coding and decoding module of a mobile terminal, which aims to solve the problems of electromagnetic interference and electromagnetic compatibility when an audio coding and decoding chip is integrated into a module. The problems of the electromagnetic interference and the electromagnetic compatibility are eliminated or reduced by reasonably arranging pins. The audio coding and decoding module can be widely applied to the mobile terminals.

Description

The audio encoding and decoding module of mobile terminal
Technical field
The invention belongs to mobile communication and audio encoding and decoding technology.
Background technology
Mostly the hardware structure of existing mobile terminal is each components and parts are directly connected on mainboard, and the audio encoding and decoding chip that has in much novel mobile terminal is also directly to be arranged on the mainboard of mobile terminal.The drawback of this set scheme needs to carry out integrated testability after being the audio encoding and decoding chip is connected in mainboard, if the problem that tests out is modified, need to comprehensively revise mainboard.When on Mobile terminal main board, multiple components and parts being set (this is ubiquitous situation), the test repeatedly of multimode can cause the R﹠D cycle long, and R﹠D costs are high.
Audio encoding and decoding chip and interlock circuit are integrated into the module that can be connected in Mobile terminal main board, test in R﹠D process can be carried out take module as unit, this has just saved R﹠D cycle and R﹠D costs greatly, also highly beneficial for upgrading or personalized customization that module is follow-up, can be on the large impact of the whole generation of mobile terminal.
Be module with the audio encoding and decoding integrated chip in mobile terminal, the problem that needs solve be by to the rational layout of the pin of module to weaken or to eliminate electromagnetic interference (EMI) and electromagnetic compatibility (EMC) between each circuit.
Summary of the invention
The electromagnetic interference and the electromagnetic compatibility problem that run into when in order to solve, the audio encoding and decoding integrated chip being module, the invention provides a kind of audio encoding and decoding module of mobile terminal, reduce or eliminated electromagnetic interference between each pin signal of module by the rational sorting to pin.
Technical scheme of the present invention is as follows:
The audio encoding and decoding module of mobile terminal comprises the package body structure of built-in audio encoding and decoding chip and the pin of packaging body periphery, and the layout of described pin comprises the following sequence of sequence successively:
Sequence number 1 pin, receiver positive output path;
Sequence number 2 pins, receiver negative output path;
Sequence number 3 pins, the analog signal output path;
Sequence number 4 pins, the analog signal output path;
Sequence number 5 pins, IIS bus data input channel;
Sequence number 6 pins, IIS bus data output channel;
Sequence number 7 pins, PCM synchronizing signal path;
Sequence number 8 pins, the voice signal input channel;
Sequence number 9 pins, the voice signal input channel;
Sequence number 10 pins, the analog signal input channel;
Sequence number 11 pins, the analog signal input channel;
Sequence number 12 pins, Mike's positive input path;
Sequence number 13 pins, Mike's negative input path;
Sequence number 14 pins, earphone Mike input channel;
Sequence number 15 pins, earphone Mike interrupt signal path;
Sequence number 16 pins, the PCM data output channel;
Sequence number 17 pins, PCM data input channel;
Sequence number 18 pins, the iic bus data path;
Sequence number 19 pins, iic bus clock signal path;
Sequence number 20 pins, IIS bus left and right acoustic channels clock signal path;
Sequence number 21 pins, PCM clock signal path;
Sequence number 22 pins, IIS bus clock signal path;
Sequence number 23 pins, the master clock signal path;
Sequence number 24 pins, FM aerial signal path;
Sequence number 25 pins, audio encoding and decoding module internal grounded circuit;
Sequence number 26 pins, audio encoding and decoding module internal grounded circuit;
Sequence number 27 pins, FM reset signal path;
Sequence number 28 pins, FM clock signal path;
Sequence number 29 pins, loud speaker positive output path;
Sequence number 30 pins, loud speaker negative output path;
Sequence number 31 pins, earphone R channel output channel;
Sequence number 32 pins, earphone L channel output channel.
Described packaging body is rectangle or square tabular body, and rectangle or foursquare four edges are respectively edge a, edge b, edge c, edge d; Described pin is arranged at the edge of rectangle or square packaging body, and sequence number 1 to sequence number 9 pins are arranged at the same edge a of packaging body; Sequence number 10 to sequence number 17 pins are arranged at the same edge b of packaging body; Sequence number 18 to sequence number 23 pins are arranged at the same edge c of packaging body; Sequence number 24 to sequence number 32 pins are arranged at the same edge d of packaging body.
Technique effect of the present invention:
Technical scheme of the present invention adopts following several principles to realize purpose of the present invention:
1, nearby principle: paired differential signal path pin is set together and makes between signal interact (EMI and EMC, as follows) little; The pin that need to be connected with the outer same circuit of audio encoding and decoding module arranges nearby, convenient common (in pairs) cabling.
2, insulation blocking: on the pin side of transmission of signal, ground wire is set and isolates, thereby the mutual electromagnetic that reduces between this base pin signal line and other holding wires is disturbed.
Can arrange concrete pin in following embodiment part and be described in detail to illustrate its technique effect.
Description of drawings
Fig. 1 is the pin layout figure of the audio encoding and decoding module of mobile terminal of the present invention.
Fig. 2 is the schematic block circuit diagram of the audio encoding and decoding module of mobile terminal of the present invention.
Embodiment
The present invention arranges the problem that can solve electromagnetic interference (EMI) and electromagnetic compatibility (EMC) by rational pin.
Below describe technical scheme of the present invention in detail with embodiment shown in Figure 1.The layout of concrete audio encoding and decoding module pin is seen following form.
Number of pins in Fig. 1 Corresponding pin sequence number in technical solution of the present invention Pin is described Remarks
1 Sequence number 1 pin Receiver positive output path; Analog signal output (Analogue Output) Receiver positive output
2 Sequence number 2 pins Receiver negative output path; Analog signal output (Analogue Output) The receiver negative output
3 Without corresponding The ground wire pin
4 Sequence number 3 pins Analog signal output path (Analogue Output) Monophony simulation output (Mono analogue Output)
5 Sequence number 4 pins Analog signal output path (Analogue Output) Monophony simulation output (Mono analogue Output)
6 Without corresponding Power pin Be the master chip power supply
7 Sequence number 5 pins IIS bus data input channel; Numeral input (Digital Input) IIS data input bus (DIB) (IIS-bus serial data input)
8 Sequence number 6 pins IIS bus data output channel; Numeral output (Digital Output) IIS data-out bus (IIS-bus serial data output)
9 Sequence number 7 pins PCM synchronizing signal path; Numeral defeated (Digital input) Speech frame synchronous (Voice Codec Frame Sync)
10 Sequence number 8 pins Voice signal input channel (Sound Signal Input) Audio input signal (Sound Signal Input)
11 Sequence number 9 pins Voice signal input channel (Sound Signal Input) Audio input signal (Sound Signal Input)
12 Sequence number 10 pins The analog signal input channel; Voice signal input channel (Analogue Input) Transmission forward differential received signal (RX mono differential input positive signal)
13 Sequence number 11 pins The analog signal input channel; Voice signal input channel (Analogue Input) Transmission negative sense differential received signal (RX mono differential input negative signal)
14 Without corresponding The ground wire pin
15 Sequence number 12 pins Mike's positive input path; Analog signal input (Analogue Input) MIC positive input terminal (Mic Pre-amp Positive input)
16 Sequence number 13 pins Mike's negative input path; Analog signal input (Analogue Input) MIC negative input end (Mic Pre-amp Negative input)
17 Without corresponding The ground wire pin
18 Sequence number 14 pins Earphone Mike input channel; Analog signal input (Analogue Input) Earphone Mike inputs (HP MIC Pre-amp input)
19 Sequence number 15 pins Earphone Mike interrupt signal path; Digital signal output (Digital Earphone keystroke interrupts, high effectively (Answer Phone with MIC interrupt.Active High)
output)
20 Sequence number 16 pins The PCM data output channel; Digital signal output (Digital output) Speech simulation-digital translation output (Voice ADC Output)
21 Sequence number 17 pins PCM data input channel; Digital signal input (Digital Input) Speech digit-analog-converted input (Voice DAC Input)
22 Sequence number 18 pins The iic bus data path; Digital signal I/O (Digital Input/Output) IIC data I/O end (Control interface)
23 Sequence number 19 pins Iic bus clock signal path; Digital signal input (Digital Input) IIC clock signal (Control interface)
24 Without corresponding The ground wire pin
25 Sequence number 20 pins IIS bus left and right acoustic channels clock signal path; Digital signal I/O (Digital Input/Output) The IIS bus run is selected clock (IIS-bus channel select clock)
26 Without corresponding The ground wire pin
27 Sequence number 21 pins PCM clock signal path; Digital signal input (Digital Input) PCM clock (PCM clock)
28 Sequence number 22 pins IIS bus clock signal path; Digital signal I/O (Digital Input/Output) IIS bus clock (IIS-bus serial clock)
29 Without corresponding The ground wire pin
30 Sequence number 23 pins The master clock signal path; Digital signal input (Digital Input) The master clock signal (Master Clock Input for Module) of input audio encoding and decoding module
31 Without corresponding The ground wire pin
32 Without corresponding Power pin (Power supply) The power supply of OP (Power for OP)
33 Sequence number 24 pins FM aerial signal path (FM RF Input) As far as possible near FM feedback point
34 Sequence number 25 pins Audio encoding and decoding module internal grounded circuit Inner ground connection, but also ground connection of outside
35 Sequence number 26 pins Audio encoding and decoding module internal grounded circuit Inner ground connection, but also ground connection of outside
36 Sequence number 27 pins FM reset signal path FM reset (FM Reset)
37 Sequence number 28 pins FM clock signal path 32.768KHz clock
38 Sequence number 29 pins Loud speaker positive output path; Analog signal output (Analogue Output) Loud speaker positive output (SPEAKER output for Speaker)
39 Sequence number 30 pins Loud speaker negative output path; Analog signal output (Analogue Output) Loud speaker negative output (SPEAKER output for Speaker)
40 Without corresponding The ground wire pin
41 Sequence number 31 pins Earphone R channel output channel; Analog signal output (Analogue Output) Earphone right wing output (Headphone Right Output)
42 Sequence number 32 pins Earphone L channel output channel; Mould The left road output of earphone (Headphone
Analog signal output (AnalogueOutput) Left Output)
43-58 Without corresponding The ground wire pin
In table, abbreviation is described as follows:
PCM (Pulse Code Modulation----pulse code modulation).
IIS (Inter-IC Sound bus) claim again I2S, is the serial digital audio-frequency bus agreement that PHILIPS Co. proposes.
Iic bus is the abbreviation of English " Inter Integrated Circuit Bus " internal integrate circuit bus, is a kind of data highway system of serial.
As seen from Figure 1, the packaging body of audio encoding and decoding module is rectangle or square tabular body, rectangle or foursquare four edges are respectively edge a, edge b, edge c, edge d (four limits of packaging body in Fig. 1, corresponding order is left, down, right in Fig. 1, upper four limits); Described pin is arranged at the edge of rectangle or square packaging body, and sequence number 1 to sequence number 9 pins are arranged at the same edge a of packaging body; Sequence number 10 to sequence number 17 pins are arranged at the same edge b of packaging body; Sequence number 18 to sequence number 23 pins are arranged at the same edge c of packaging body; Sequence number 24 to sequence number 32 pins are arranged at the same edge d of packaging body.
Below technical meaning that each pin in upper table is arranged describe (sequence number that institute's foundation is described is number of pins in Fig. 1).
Pin one and a pair of differential signal of pin two transmission, setting meets above-mentioned nearby principle.
Pin 4 and the pin 5 a pair of differential signals of transmission, setting meets above-mentioned nearby principle.
Pin 7 and pin 8 are set together and facilitate common cabling, meet above-mentioned nearby principle.
Pin one 0 and pin one 1 are set together and facilitate common cabling.
Pin one 2 and the pin one 3 a pair of differential signals of transmission, setting meets above-mentioned nearby principle.
Pin one 5 and the pin one 6 a pair of differential signals of transmission, setting meets above-mentioned nearby principle.
Pin one 4 and pin one 7 are the ground wire pin, and pin one 5 and pin one 6 are formed above-mentioned insulation blocking.
Pin two 0 and pin two 1 close on convenient common cabling are set.
Between pin two 3, pin two 5, pin two 7, the effect that the ground wire pin plays above-mentioned insulation blocking is set respectively.
Pin 32 is the pins that connect power supply, and for fear of the impact on signal in pin 33, two edges that both are separately positioned on packaging body are also separated by a distance, reduced influence degree between the two.
Pin 34, the inner ground connection of pin 35, for fear of the impact of FM antenna pin 33, PIN TO PIN can be realized with other modules in the outside.
Pin 38 and the pin 39 a pair of differential signals of transmission, setting meets above-mentioned nearby principle.
Pin 41 and the pin 42 a pair of audio signals of transmission, setting meets above-mentioned nearby principle.
Pin 43 is ground wire to pin 58, and one side is ground connection fully, can increase on the other hand the bonding strength of module of the present invention and mainboard.
Fig. 2 is the schematic block circuit diagram of audio encoding and decoding module of the present invention, label is the number of pins (number of pins in corresponding diagram 1) of drawing, audio encoding and decoding chip (CODEC in Fig. 2) model that adopts is WM8991, and Ou Sheng (WOLFSON) produces.The model of FM is SI47XX, and Silicon produces.
The layout of the pin in the present invention meets nearby principle and insulation blocking principle, effectively weakens or has eliminated electromagnetic interference (EMI) and electromagnetic compatibility (EMC) between each circuit through experiment showed.

Claims (1)

1. the audio encoding and decoding module of mobile terminal, comprise the package body structure of built-in audio encoding and decoding chip and the pin of packaging body periphery, it is characterized in that, the layout of described pin comprises the following sequence of sequence successively:
Sequence number 1 pin, receiver positive output path;
Sequence number 2 pins, receiver negative output path;
Sequence number 3 pins, the analog signal output path;
Sequence number 4 pins, the analog signal output path;
Sequence number 5 pins, IIS bus data input channel;
Sequence number 6 pins, IIS bus data output channel;
Sequence number 7 pins, PCM synchronizing signal path;
Sequence number 8 pins, the voice signal input channel;
Sequence number 9 pins, the voice signal input channel;
Sequence number 10 pins, the analog signal input channel;
Sequence number 11 pins, the analog signal input channel;
Sequence number 12 pins, Mike's positive input path;
Sequence number 13 pins, Mike's negative input path;
Sequence number 14 pins, earphone Mike input channel;
Sequence number 15 pins, earphone Mike interrupt signal path;
Sequence number 16 pins, the PCM data output channel;
Sequence number 17 pins, PCM data input channel;
Sequence number 18 pins, the iic bus data path;
Sequence number 19 pins, iic bus clock signal path;
Sequence number 20 pins, IIS bus left and right acoustic channels clock signal path;
Sequence number 21 pins, PCM clock signal path;
Sequence number 22 pins, IIS bus clock signal path;
Sequence number 23 pins, the master clock signal path;
Sequence number 24 pins, FM aerial signal path;
Sequence number 25 pins, audio encoding and decoding module internal grounded circuit;
Sequence number 26 pins, audio encoding and decoding module internal grounded circuit;
Sequence number 27 pins, FM reset signal path;
Sequence number 28 pins, FM clock signal path;
Sequence number 29 pins, loud speaker positive output path;
Sequence number 30 pins, loud speaker negative output path;
Sequence number 31 pins, earphone L channel output channel;
Sequence number 32 pins, earphone R channel output channel;
Described packaging body is rectangle or square tabular body, and rectangle or foursquare four edges are respectively edge a, edge b, edge c, edge d; Described pin is arranged at the edge of rectangle or square packaging body, and sequence number 1 to sequence number 9 pins are arranged at the same edge a of packaging body; Sequence number 10 to sequence number 17 pins are arranged at the same edge b of packaging body; Sequence number 18 to sequence number 23 pins are arranged at the same edge c of packaging body; Sequence number 24 to sequence number 32 pins are arranged at the same edge d of packaging body;
The layout of described pin is followed the insulation blocking principle: by the pin side at transmission of signal, ground wire is set and isolates, thereby the mutual electromagnetic that reduces between this base pin signal line and other holding wires is disturbed; And two edges by power pin and FM aerial signal path pin being separately positioned on packaging body are also separated by a distance, reduced influence degree between the two.
CN200810188223XA 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal Expired - Fee Related CN101505167B (en)

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CN200720187364 2007-12-21
CN200810188223XA CN101505167B (en) 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal

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CN2008101882210A Expired - Fee Related CN101505165B (en) 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal
CN2008101882174A Expired - Fee Related CN101505163B (en) 2007-12-21 2008-12-19 Telephone functional module for mobile terminal
CN2008101882206A Expired - Fee Related CN101505164B (en) 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal
CN200810188223XA Expired - Fee Related CN101505167B (en) 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal
CN2008101882189A Expired - Fee Related CN101505176B (en) 2007-12-21 2008-12-19 Bluetooth module for mobile terminal
CN2008101882225A Expired - Fee Related CN101505166B (en) 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal
CNA200810188216XA Pending CN101505162A (en) 2007-12-21 2008-12-19 Wireless local area network module for mobile terminal
CNA2008101882193A Pending CN101505531A (en) 2007-12-21 2008-12-19 Satellite positioning navigation module for mobile terminal

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CN2008101882210A Expired - Fee Related CN101505165B (en) 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal
CN2008101882174A Expired - Fee Related CN101505163B (en) 2007-12-21 2008-12-19 Telephone functional module for mobile terminal
CN2008101882206A Expired - Fee Related CN101505164B (en) 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal

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CN2008101882189A Expired - Fee Related CN101505176B (en) 2007-12-21 2008-12-19 Bluetooth module for mobile terminal
CN2008101882225A Expired - Fee Related CN101505166B (en) 2007-12-21 2008-12-19 Audio encoding and decoding module for mobile terminal
CNA200810188216XA Pending CN101505162A (en) 2007-12-21 2008-12-19 Wireless local area network module for mobile terminal
CNA2008101882193A Pending CN101505531A (en) 2007-12-21 2008-12-19 Satellite positioning navigation module for mobile terminal

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CN102143677B (en) * 2010-01-29 2014-01-22 上海卫星工程研究所 Ground system capable of reducing electromagnetic interference
CN101984725A (en) * 2010-11-17 2011-03-09 广州杰赛科技股份有限公司 Wireless access device and method
TWI727898B (en) * 2019-11-05 2021-05-11 瑞昱半導體股份有限公司 Multi-member bluetooth device be capable of synchronizing audio playback between different bluetooth circuits
CN116936562B (en) * 2023-09-14 2023-12-05 成都爱旗科技有限公司 Chip packaging structure, wiFi6 chip and Internet of things equipment

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CN1633228A (en) * 2003-12-24 2005-06-29 上海贝岭股份有限公司 An electromagnetic interference suppressive ground wiring method
CN2888779Y (en) * 2005-07-06 2007-04-11 深圳市融进科技有限公司 GSM mobile phone with GPS

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Publication number Priority date Publication date Assignee Title
EP0382948A1 (en) * 1989-02-14 1990-08-22 Koninklijke Philips Electronics N.V. Supply pin rearrangement for an integrated circuit
CN2171953Y (en) * 1993-06-28 1994-07-13 上海裕利电信有限公司 Numeral subscriber interface device
CN1633228A (en) * 2003-12-24 2005-06-29 上海贝岭股份有限公司 An electromagnetic interference suppressive ground wiring method
CN2888779Y (en) * 2005-07-06 2007-04-11 深圳市融进科技有限公司 GSM mobile phone with GPS

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Publication number Publication date
CN101505166A (en) 2009-08-12
CN101505163B (en) 2013-02-20
CN101505176A (en) 2009-08-12
CN101505164B (en) 2013-02-20
CN101505165A (en) 2009-08-12
CN101505163A (en) 2009-08-12
CN101505164A (en) 2009-08-12
CN101505166B (en) 2012-09-05
CN101505167A (en) 2009-08-12
CN101505531A (en) 2009-08-12
CN101505162A (en) 2009-08-12
CN101505165B (en) 2012-09-19
CN101505176B (en) 2012-09-05

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