Audio DSP. AK7754 Datasheet

AK7754 DSP. Datasheet pdf. Equivalent


AKM AK7754
[AK7754]
AK7754
Audio DSP with Stereo CODEC + MIC/HP-AMP
GENERAL DESCRIPTION
The AK7754 is a highly integrated audio digital signal processor (DSP) with two Audio I/F’s, Microphone and
Headphone Amplifier. The audio DSP has 1536step/fs (at 48KHz sampling) parallel processing power, and
AKM’s original Hands-free technology provides high performance noise and echo cancelling. The 96k-bit
delay memory allows surround processing, acoustic effect and parametric equalizers. As the AK7754 is a
RAM based DSP, it is programmable for user requirements. The internal SRC has various sampling rate
converting modes, corresponds many sampling rates without changing the DSP operating sampling
frequency. The AK7754 is available in a space saving small 48pin QFN package.
FEATURES
DSP Block
- Word length: 24bit (Coefficient RAM & Data RAM: F24 floating point)
- Processing Speed: 13.6 ns (1536step/fs fs=48kHz; 9216step/fs fs=8kHz)
- Multiplication: 20 x 16 36-bit Double precision arithmetic available
- Divider 20 / 20 20bit
- ALU: 40bit arithmetic operation (overflow margin 4bit) 24bit floating point arithmetic
and logic operation
- Program RAM: 2048 x 36bit
- Coefficient RAM: 2048 x 16bit (F24 floating point)
- Data RAM: 512 x 24-bit (F24 floating point)
- Offset Register: 32 x 12bit
- Delay RAM1: 3072 x 24bit
- Delay RAM2: 2048 x 12bit
- Sampling rate: fs= 8.0k ~ 48kHz
- Master/Slave Operation
- Master Clock: 1536fs
(generated from 32fs, 48fs, 64fs, 128fs, 256fs, 384fs by internal PLL)
Two Digital Interfaces (I/F 1, I/F 2)
- Digital Signal Input Port (4ch) MSB justified 24bit/LSB justified 24/20/16bit and I2S
- Digital Signal Input Port (6ch) MSB justified 24bit/ LSB justified 20/16bit and I2S
- Short / Long Frame
-24 bit linear, 8 bit A-law, 8 bit µ-law
Stereo 24bit ADC Block
- Sampling rate: 8 ~ 48kHz
- ADC Characteristics S/(N+D): 82dB ,DR, S/N: 89dB
- Three Analog Input Selectors (Differential, Single-ended Inputs)
- Channel Independent MIC, Analog Line Gain Amp (0dB, 9dB~27dB, 3dBstep)
- Channel Independent Digital Volume (24dB ~ -103dB, 0.5dB Step, Mute)
- Integrated DC offset canceling High Pass Filter
Digital Microphone I/F
MS1138-E-01-PB
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2012/03


AK7754 Datasheet
Recommendation AK7754 Datasheet
Part AK7754
Description Audio DSP
Feature AK7754; [AK7754] AK7754 Audio DSP with Stereo CODEC + MIC/HP-AMP GENERAL DESCRIPTION The AK7754 is a highly .
Manufacture AKM
Datasheet
Download AK7754 Datasheet




AKM AK7754
Stereo 24bit DAC
- Sampling rate: 8 ~ 48kHz
- Digital Volume (12dB~-115dB, 0.5dB Step, Mute)
- Digital De-emphasis Filter (tc=50/15μs, fs=32kHz, 44.1kHz, 48kHz)
Line Outputs
- Single-ended or Differential Outputs
- S/(N+D): 91dB ,DR, S/N: 96dB
- Stereo Analog Volume (+0 ~ -28dB, 2.0dB Step, Mute)
Stereo Headphone Amplifier with a Volume Control
- Rated Output Power: 27mW/ch @16
- S/(N+D): 70dB , S/N: 89dB
- Stereo Analog Volume (+0 ~ -50dB,1.0/2.0/4.0dB Step, Mute)
- Click Noise Free at Power ON/OFF
SRC Block
- 2ch x 1 system
- Input Sampling Frequency: 8kHz ~ 96kHz
- Output Sampling Frequency: 8kHz ~ 48kHz
Analog Bypass Mode
- Bypass Amplifier (0dB~-21dB, 3dB step)
Output Mixer
μP Interface: I2C Bus (400KHz Fast-Mode)
Power Supply
Analog AVDD: 3.0V ~ 3.6V (typ.3.3V)
Digital1 DVDD: 3.0V ~ 3.6V (typ.3.3V)
Digital2 DVDD18: 1.7V ~ 1.9V (typ.1.8V)
HP-Amp HVDD: 3.0V ~ 3.6V (typ.3.3V)
Operating temperature range: -20°C ~ 85°C
Package: 48pin QFN (0.5mm pitch)
[AK7754]
MS1138-E-01-PB
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2012/03



AKM AK7754
Block Diagram
MPWR
IN1L/IN1P
IN2L/IN1N
IN3L/DMCLK
IN3R/DMDAT
IN1R/IN2P
IN2R/IN2N
LRCKO
BICKO
CLKO
XTO
XTI
LFLT
INITRSTN
TEST1
BICK1/JX1
LRCK1/JX0
BICK2/JX1
LRCK2/JX0
SRCLFLT
SDIN2/JX2
SDIN1/JX2
MPRF
VCOM
MIC POWER PMMP
IN1L/IN1P
IN2L
IN1N
PMMICL
MICL
IN3L LINL PMLINL
IN3R LINR PMLINR
IN1R/IN2P
IN2R
IN2N
PMMICR
MICR
1 PMPSL
0 BPSL
PMPSR
0
1 BPSR
0
1
AINL
PMADL/R
ADC
1
0
AINR
DIGMIC IF
VREF
PMDAL/R
DAC
DAL
DAR
LRCKOE
BICKOE
DMCLK
DMDAT
SDOUTAD
CLKOE
CLKGEN & CONT
MLRCLK0
MBITCLK0
MCLK0
MDSPCLK0
SELJX2
1
0
JX2E
1 JX1E
0
SELJX
1 JX0E
0
SRC
SRCBICKO
SRCLRCKO
SRCI
UNLOCK
SRCO
PMSRC
0
1
SELDI2
DIN3
JX2
JX1
JX0
DOUT3
GP0
DSP
WDT
DIN2
GP1
DOUT2
DIN1
IRPT
DOUT1
PMDSP
pull down
Open Drain
PMLOL
Line
Line
PMLOR
PMHPL
HP
PMHPR
HP
SELDAI[1:0]
3
2
1
0
SELDOM[1:0]
3
2
1
0
MICIF
RDY
SO
SELMN
0 OUTME
1
SELSON
1
0
WDTEN
LOCKE
SELDO2[1:0]
3
2
OUT2E
1
0
SELDO1[1:0]
3
2
OUT1E
1
0
[AK7754]
HVDD
AVDD
DVDD
2 DVDD18
3 VSS
OUTL/OUTP
OUTR/OUTN
HPL
HVCOM
HPR
RDY/SDOUTM
SO/RDY
TEST2
CAD1
SCL
CAD0
SDA
STO
SDOUT2
SDOUT1
Figure 1. Block Diagram
MS1138-E-01-PB
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2012/03







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