AK7756 AKM [Asahi Kasei Microsystems], AK7756 Datasheet
AK7756
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AK7756 Summary of contents
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... I/F. The audio DSP has 9216step 8kHz parallel processing power. As the AK7756 is a RAM based DSP 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 ...
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... JX0 WDT/ JX1E CRC JX1 DOUT2 RDY μP (I2C,SPI)/ EEPROM DOUT3 Interface SI EEST PMOSC Memory OSC Figure 1. Block Diagram 2 [AK7756] XTO PLL XTI LFLT BICK PCM LRCK Interface SDIN1 SDOUT1 SELDO1 STO/RDY/SDOUT1 SELDO2 SDOUT2/RDY EXTEEP/RQN SCL/SCLK SDA/SO I2CSEL ...
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... Ordering Guide AK7756EN AK7756VF AKD7756HFS ■ Pin Layout AK7756EN MPRF VCOM VSS2 AVDD MICBIAS INP/AIN INN MS1218-E-00-PB -20 ∼ +85°C 28pin QFN -40 ∼ +85°C 30pin VSOP Evaluation Board for AK7756 Top View STO/RDY/SDOUT1 ...
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... SDOUT1 4 JX0/SDIN2 5 EXTEEP/RQN 6 EEST/SDOUT3/ SCL/SCLK SDA/SO 9 STO/RDY/SDOUT1 10 SDOUT2/RDY LRCK 13 BICK 14 SDIN1 15 MS1218-E-00- AK7756VF 24 Top View [AK7756] XTI XTO I2CSEL LFLT INN INP/AIN MICBIAS AVDD AVDD VSS2 VCOM MPRF AOUT JX1 IRSTN 2010/08 ...
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... DBUS SHIFT 40-Bit 24-Bit 2 x 24-Bit 40-Bit 1 x 24-Bit 2 x 24-Bit 2 x 24-Bit 5 DLRAM Address Pointer DLRAM OFREG 32w x 13-Bit µP I/F Control Serial I/F PRAM 3072w x 36-Bit PC Stack: 5 level(max) DIN2 (ADC or SDIN2 pin) DIN1 DOUT3 (DAC or SDOUT3pin) DOUT2 DOUT1 [AK7756] 2010/08 ...
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... Audio channel select Pin Audio Serial Data Clock Pin Audio Serial Data Input 1 Pin Reset Pin (active low) The AK7756 must be reset once upon power-up. “H”: Power-up, “L”: Initialize the control register. Conditional Jump Pin1 Analog Output Outputs. Outputs VSS2 during initial reset. ...
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... MDIF bit = “0”) Positive Microphone input pin ( MDIF bit = “1”) Negative Microphone input pin ( MDIF bit = “1”) PIN/FUNCTION (AK7756VF) Outputs “L” during initial reset. (JXOE “H”: start download (download from external memory) “L”: normal operation When initial reset and μ ...
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... LRCK I/O Audio channel select Pin 14 BICK I/O Audio Serial Data Clock Pin 15 SDIN1 I Audio Serial Data Input 1 Pin Reset Pin (active low) The AK7756VF must be reset once upon power-up. 16 IRSTN I 17 JX1 I Conditional Jump Pin1 18 AOUT O Analog Output Outputs. Outputs VSS2 during initial reset. ...
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... Note 5. All voltages with respect to ground. VSS1 and VSS2 must be the same voltage. Note 9. The power-up sequence between AVDD, DVDD and DVDD18 is not critical. But all power supplies must be ON before starting operation of the AK7756. * AKM assumes no responsibility for the usage beyond the conditions in this datasheet. ...
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... AIN pin→ Mono ADC→ SDOUT1 MGAIN=21dB MGAIN= 0dB MGAIN=21dB MGAIN= 0dB MGAIN=21dB MGAIN= 0dB (Note 11) MGAIN= 0dB 10 min typ max 22 2.32 2 ±2.0 ±2.2 ±2.4 2.0 2.2 2.4 [AK7756] Units kΩ kΩ pF Bits Vpp VPP 2010/08 ...
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... Dynamic Characteristics; Mono DAC→AOUT pin S/(N+D) S/N Analog Output Full-scale Output Voltage Load Resistance Load Capacitance Note 12. Full scale output voltage. The output voltage is proportional to AVDD. Vout=0.67 x AVDD (typ.) MS1218-E-00-PB min (0dBFS (Note 12) 2. [AK7756] typ max Unit 24 Bits 2.2 2.31 Vpp kΩ 2010/08 ...
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... Symbol min 13) VIH 80%DVDD 13) VIL VIH 70%DVDD VIL VOH DVDD-0.4 (Note 14) VOL (Note 14) VOL (Note 15) Iin Iix POWER CONSUMPTION min (Note 17, Note 18 [AK7756] typ max Unit V 20%DVDD V V 30%DVDD V V 0.4 V 0.4 V μA ±10 26 μA typ max Units 11 ...
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... Note 26. The analog modulator samples the input signal at 1024kHz. MS1218-E-00-PB DIGITAL FILTER CHARACTERISTICS Symbol min Note 20 4. ΔGD GD Symbol min 9. Δ [AK7756] typ max Unit 3.15 kHz 3.63 kHz 3.83 kHz kHz ±0 μ typ max Unit 6.3 kHz 7.26 kHz 7.66 kHz kHz ±0 μ ...
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... Digital Filter + Analog Filter Amplitude characteristic 20Hz~7.0kHz MS1218-E-00-PB Symbol min 27 4. 28) GD Symbol min [AK7756] typ max Unit 3.62 kHz 4 kHz kHz ±0. ±0.5 dB typ max Unit 7.24 kHz 8 kHz kHz ±0. ± ...
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... Note 29. The IRSTN pin must be put to “H” after all power supplies are powered up. MS1218-E-00-PB SWITCHING CHARACTERISTICS Symbol min fXTI 11 fBICK 0.1 Duty 40 Symbol min tRST 600 15 [AK7756] typ max Unit 12.288 12.4 MHz kHz 32fs/48fs/64fs 1.1 MHz 60 typ max Unit ns 2010/08 ...
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... Note 30. BICK edge must not occur at the same time as LRCK edge. 2 Note 31. Except I S. MS1218-E-00-PB Symbol (Note 30) tBLRD (Note 30) tLRBD tBSIDS tBSIDH (Note 31) tLRD tBSOD fBICK tMBL tBSIDS tBSIDH (Note 31) tLRD tBSOD 16 [AK7756] min typ max Unit - ...
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... From SCLK “↑” to RQN “↑” SI Latch Setup Time SI Latch Hold Time AK7756 → μP Delay Time from SCLK “↓”to SO Output Hold Time from SCLK “↑” Output Note 32. Except when writing to the 8th bit of command code. ...
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... Timing Diagram XTI LRCK BICK IRSTN Note 34. Set the IRSTN pin = “L” when power up and down the AK7756. MS1218-E-00-PB 1/fXTI 1/fXTI 1/fs 1/fs 1/fBICK 1/fBICK tBICKH tBICKL Figure 2. System Clock tRST Figure 3. Reset Timing 18 [AK7756] tXTI=1/fXTI VIH VIL ts=1/fs VIH VIL ...
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... LRCK tBLRD BICK SDIN1/2 LRCK BICK tLRD SDOUT1/2/3 MS1218-E-00-PB tLRBD tBSIDS Figure 4. Audio Interface (Slave Mode Input) tBSOD Figure 5. Audio Interface (Slave Mode Output) 19 [AK7756] VIH VIL VIH VIL tBSIDH VIH VIL VIH VIL tLRD VIH VIL tBSOD 50%VDD 2010/08 ...
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... LRCK tMBL BICK SDIN1/2 LRCK BICK tLRD SDOUT1/2/3 MS1218-E-00-PB tMBL tBSIDS Figure 6. Audio Interface (Master Mode Input) tBSOD Figure 7. Audio Interface (Master Mode Output) 20 [AK7756] 50%DVDD 50%DVDD tBSIDH VIH VIL 50%DVDD tLRD 50%DVDD tBSOD 50%DVDD 2010/08 ...
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... MS1218-E-00-PB tWRF tWRR tSF tSR tSCLKL tSCLKH 1/fSCLK 1/fSCLK tRST1 tIRRQ Figure 8. μP Interface 1 (SPI ) tSIH tSIS tSCW Figure 9. μP Interface 2 (SPI) 21 VIH VIL VIH VIL VIH VIL VIH VIL tWRQH tWSC tSCW [AK7756] VIH VIL VIH VIL VIH VIL 2010/08 ...
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... SCLK SO SDA tBUF SCL tHD:STA Stop Start MS1218-E-00-PB tSOH tSOS Figure 10. μP Interface 3 (SPI) tLOW tR tHIGH tF tHD:DAT tSU:DAT tSU:STA Start 2 Figure 11. μP Interface (I C Bus) 22 [AK7756] VIH VIL VIH VIL VIH VIL tSP VIH VIL tSU:STO Stop 2010/08 ...
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... A 0.5 Note: The exposed pad on the bottom surface of the package must be open or connected to the ground. ■ Package & Lead frame material Package molding compound: Epoxy Lead frame material: Cu Lead frame surface treatment: Solder (Pb free) plate MS1218-E-00-PB PACKAGE (AK7756EN 2.50 0.23±0. [AK7756] 3 ...
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... VSOP (Unit: mm 0.65 0.08 ■ Package & Lead frame material Package molding compound: Epoxy Lead frame material: Cu Lead frame surface treatment: Solder (Pb free) plate MS1218-E-00-PB PACKAGE (AK7756VF) 9.70±0.10 0.12 M 0.24±0.06 S 10.00MAX 24 [AK7756 0°~8˚ 0.30 S 2010/08 ...
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... XXXB: Lot number (X: Digit number, B: Alpha character) YYYYC: Assembly date (Y: Digit number, C: Alpha character) MS1218-E-00-PB MARKING (AK7756EN) 7756 XXXX 1 XXXX : Date code identifier (4 digits) MARKING (AK7756VF) AKM XXXBYYYYC 1) AKM Logo 2) Marketing Code: AK7756VF 3) Pin #1 identification 4) Date Code: XXXBYYYYC 25 [AK7756] 2010/08 ...
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... MS1218-E-00-PB REVISION HISTORY Reason Page Contents First Edition IMPORTANT NOTICE , and AKM assumes no responsibility for such use, except for the use Note2) 26 [AK7756] in any safety, life support, or Note1) 2010/08 ...
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... Thank you for your access to AKM products information. More detail product information is available, please contact our sales office or authorized distributors. MS1218-E-00-PB 27 [AK7756] 2010/08 ...