DSP. AK7756 Datasheet

AK7756 DSP. Datasheet pdf. Equivalent


AKM AK7756
[AK7756]
AK7756
DSP with Mono CODEC + Mic/Lineout Amp
GENERAL DESCRIPTION
The AK7756 is a highly integrated digital signal processor, including a mono voice audio codec, a MIC
pre-amplifier and digital audio I/F. The audio DSP has 9216step at fs = 8kHz parallel processing power.
As the AK7756 is a RAM based DSP, it is programmable for user requirements such as hands free and
acoustic effect. The AK7756EN is available in a space saving small 28pin QFN package and the
AK7756VF is available in a 30pin VSOP package.
FEATURES
† DSP
- Word length: 24bit (Data RAM 24bit floating point)
- Instruction cycle: 13.6 ns (9216 steps at fs=8 kHz)
- Multiplier 20 x 20 36bit (double precision available)
- Divider 20 / 20 20bit
- ALU: 36bit arithmetic operation (with overflow margin 4bit) 24bit floating point
arithmetic and logic operation
- Program RAM: 3072 x 36bit
- Coefficient RAM: 2048 x 20bit
- Data RAM: 1024 x 24-bit (24bit floating point)
- Delay RAM: 3072 x 20bit, 3072 x 20bit
- Master Clock: 4.6MHz ~ 73.7MHz
- JX pins (Interrupt)
† Audio Serial I/F
- Master / Slave operation
- Right / Left justified and I2S
- PCM (Short / Long Frame)
- 16bit linear, 8bit A-law, 8bit µ-law
† Mono CODEC
- Sampling Rate 8KHz, 16KHz
- DAC S/N: 91dB, S/(N+D): 83dB (fs:16kHz)
- ADC S/N: 86dB, S/(N+D): 77dB (fs:16kHz)
† Microphone interface
- Differential or single-ended input
- Programmable Gain (+33dB ~ +15dB and 0dB, 3dB step)
- Low Noise Microphone Bias
† Automatic Power Down (CODEC, DSP)
† μP I/F : SPI, I2C-slave
† I2C bootloader
† 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)
† Operating temperature range: -20°C ~ 85°C (AK7756EN), -40°C ~ 85°C (AK7756VF)
† Package: 28pin QFN (AK7756EN)
30pin VSOP (AK7756VF)
MS1218-E-00-PB
1
2010/08


AK7756 Datasheet
Recommendation AK7756 Datasheet
Part AK7756
Description DSP
Feature AK7756; [AK7756] AK7756 DSP with Mono CODEC + Mic/Lineout Amp GENERAL DESCRIPTION The AK7756 is a highly i.
Manufacture AKM
Datasheet
Download AK7756 Datasheet




AKM AK7756
Block Diagram
AVDD VSS2 MPRF
VCOM
DVDD DVDD18 VSS1
[AK7756]
MICBIAS
Mic AIN/INP
INN
JX0/SDIN2
JX1
Line Out
AOUT
PMMB
MIC Power
Supply
AKM
DSP
Core
XTO
PLL XTI
LFLT
PMADC
A/D
PMDAC
D/A
SELDI2
JX0E
JX1E
DIN2
DIN1
DOUT1
JX0
WDT/
CRC
JX1
DOUT2
DOUT3
RDY
μP
(I2C,SPI)/
EEPROM
(I2C)
Interface
I2S or
PCM
Interface
SELDO1
SELDO2
Memory
SI
EEST
SELDO3
PMOSC
OSC
I2CSEL pin
BICK
LRCK
SDIN1
SDOUT1
STO/RDY/SDOUT1
SDOUT2/RDY
EXTEEP/RQN
SCL/SCLK
SDA/SO
I2CSEL
EEST/SDOUT3/SI
IRSTN
Figure 1. Block Diagram
MS1218-E-00-PB
2
2010/08



AKM AK7756
Ordering Guide
AK7756EN
AK7756VF
AKD7756HFS
Pin Layout
AK7756EN
-20 +85°C
-40 +85°C
28pin QFN
30pin VSOP
Evaluation Board for AK7756
[AK7756]
MPRF
VCOM
VSS2
AVDD
MICBIAS
INP/AIN
INN
21 20 19 18 17 16 15
22 14
23 13
24 12
25 Top View 11
26 10
27 9
28 8
12 3 4 5 6 7
STO/RDY/SDOUT1
SDA/SO
SCL/SCLK
EEST/SDOUT3/ SI
EXTEEP/RQN
JX0/SDIN2
SDOUT1
MS1218-E-00-PB
3
2010/08







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