Data Sheet

[AK7734]
AK7734
Audio DSP with 2-Channel ADC/SRC
GENERAL DESCRIPTION
The AK7734 is a highly integrated audio digital signal processor with integrated 2ch 24bit ADC and 2ch SRC.
It includes internal memories for digital audio processing, that allows surround effect process, time alignment
and parametric equalizing. More over, the AK7734 can process both data and filter coefficients as floating
point data so that high accuracy IIR/FIR filter performance can be achieved easily. The internal SRC has
various sampling rate converting modes, corresponds many sampling rates without changing the DSP
operating sampling frequency. The AK7734 can operate a hands-free software by AKM, as well as sound
processing, by programs downloaded via the microprocessor interface.
FEATURES
[DSP Block]
- Word length: 24bit (Coefficient RAM & Data RAM: F24 floating point)
- Processing Speed: 13.6 ns (1536step/fs; fs = 48kHz)
- Multiplication: 20 x 24 → 44-bit Double precision arithmetic available
- Divider 20 / 20 → 20bit
- ALU: 48bit arithmetic operation (overflow margin 4bit) 20bit floating point arithmetic
and logic operation
- Program RAM: 3072 x 24bit
- Coefficient RAM: 2048 x 24bit (F24 floating point)
- Data RAM: 2048 x 24-bit (F24 floating point)
- Offset Register: 64 x 13bit
- Delay RAM1: 3072 x 24-bit
- Delay RAM2: 2048 x 24-bit
- Sampling rate: fs= 7.35k ~ 48kHz
- Master Clock: 1536fs
(generated from 32fs, 48fs, 64fs, 128fs, 256fs, 384fs by internal PLL)
- Master/Slave Operation
[ADC Block]
- 64 times Over sampling
- 24bit 2ch
- Sampling rate: 7.35 ~ 48kHz
- S/(N+D): 83dB (fs = 48kHz)
- DR, S/N: 96dB (fs = 48kHz)
- Integrated DC offset canceling High Pass Filter
[SRC Block]
- 2ch x 1 system
- Support frequency: Fin = 7.35kHz ~ 96kHz → Fout = 7.35kHz ~ 48kHz
(FSO/FSI = 0.167~ 6.0)
[Digital Interface Input/Output]
- 8ch Serial Data Input
- 8ch Serial Data Output
MS1033-E-03-PB
- 1 -
2010/06
[AK7734]
[Micro Computer Interface]
- I2C Interface or 4-wired Interface
[General]
- Integrated PLL
- Integrated Regulator 3.3V → 1.8V
- Power Supply: 3.3V ± 0.3V
- Operating Temperature Range: -40˚C ~ 85˚C
- 48pin LQFP
MS1033-E-03-PB
- 2 -
2010/06
[AK7734]
■ Block Diagram
VCOM
ADC
AINR
VREF
AINL
AVDRV
LDO
SDOUTAD
1 AVDD
4 DVDD
CLKOE
CLKO
5 VSS
BITCLKOE
BITCLKO
LRCLKOE
LRCLKO
LFLT
XTO
Pull Down
Open Drain
XTI
CLKGEN & CONT
BITCLKI1
LRCLKI1
INITRSTN
CKM[3:0]
TESTI1
TESTI2
MICIF
MLRCLK0
MBITCLK0
4
4
SELRDY
SO
RDY
MADCLK0
MDSPCLK0
DIN5
SDIN1
DOUT1
JX0
DIN2
DOUT2
GP1
SDIN2 / JX0
JX1E
GP0
JX1
SDIN3 / JX1
DIN3
0
1
2
3
CKG
SETSRC
SRCLFLT
SDOUT1
0
1
2
3
SELDO3[1:0]
0
1
2
3
DOUT3
OUT2E
OUT3E
SDOUT2
SDOUT3
RDYE
UNLOCK
SRCMCKI
SRCBICKI SRCBICKO
SRCLRCKI SRCLRCKO
STO
LOCKE
WDTEN
WDT
SRC
DSP
SELDI4
SDIN4 / JX2
OUT1E
SELDO2[1:0]
IRPT
BITCLKI2
LRCLKI2
SO / RDY
SELDO1[1:0]
DIN1
JX0E
0
1
I2CSEL
RQN / CAD1
SI / CAD0
SCLK / SCL
SDA
SRCO
SRCI
SELDO4
0
1
DIN4
JX2E
DOUT4
0
1
OUT4E
SDOUT4
JX2
Figure 1. Block Diagram
* Figure 1 shows a simplified diagram of the AK7734, which is not the perfect same as the actual circuit diagram.
MS1033-E-03-PB
- 3 -
2010/06
[AK7734]
CP0,CP1
DLP0,DLP1
DP0,DP1
DLRAM1:3072W×24-Bit
DRAM
2048w×24-Bit
CRAM
2048W×24-Bit
OFREG
64w×13-Bit
DLRAM2:2048W×24-Bit
CBUS(24-Bit)
DBUS(24-Bit)
MP×24
Micon I/F
MP×20
X
Control
PRAM
DEC
Y
Serial I/F
3072w × 36-Bit
Multiply
24×20 → 44-Bit
PC
Stack: 5level(max)
TMP 12×24-Bit
24-Bit
44-Bit
PTMP(LIFO) 6×24-Bit
MUL
DBUS
SHIFT
48-Bit
48-Bit
A
B
ALU
48-Bit
2×24(,16)-Bit
DIN5 (ADC)
2×24(,16)-Bit
DIN4 (SRC)
2×24,20,16-Bit
DIN3
2×24,20,16-Bit
DIN2
2×24,20,16-Bit
DIN1
Overflow Margin: 4-Bit
48-Bit
DR0 ∼ 3
48-Bit
Over Flow Data
Generator
Division 20÷20→20
2×24,20,16-Bit
DOUT4
2×24,20,16-Bit
DOUT3
2×24,20,16-Bit
DOUT2
2×24,20,16-Bit
DOUT1
Peak Detector
Figure 2. Main DSP Block Diagram of The AK7734
MS1033-E-03-PB
- 4 -
2010/06
[AK7734]
■ Ordering Guide
-40 ∼ +85°C
48pin LQFP
Evaluation Board for AK7734
AK7734XQ
AKD7734
VSS3
DVDD
SCLK/SCL
SDA
SI/CAD0
RQN/CAD1
JX2/SDIN4
BITCLKI2
LRCLKI2
SO/RDY
STO
34
33
32
31
30
29
28
27
26
25
VSS4
35
37
AVDRV
SRCLFLT
36
■ Pin Layout
DVDD
AINL
44
17
VSS2
AVDD
45
16
SDOUT1
VCOM
46
15
SDOUT2
VSS5
47
14
SDOUT3
LFLT
48
13
SDOUT4
12
18
XTO
(TOP VIEW)
11
43
XTI
AINR
10
I2CSEL
VSS1
19
9
42
DVDD
INITRSTN
8
20
TESTI2
48pin LQFP
LRCLKI1
41
7
SETSRC
BITCLKI1
CKM [0]
6
21
JX1/SDIN3
40
JX0/SDIN2
CKM [3]
5
LRCLKO
4
22
SDIN1
39
3
DVDD
CKM [1]
BITCLKO
CKM [2]
23
2
38
1
CLKO
TESTI1
24
Note) XXXX is internal pull-down pin. XXXX is the pin name.
MS1033-E-03-PB
- 5 -
pin
Input
Output
I/O
Power
2010/06
[AK7734]
PIN FUNCTION
No.
Name
1
TESTI1
2
3
4
CKM[2]
CKM[1]
SDIN1
5
JX0
SDIN2
6
JX1
SDIN3
7
BITCLKI1
8
LRCLKI1
9
DVDD
10 VSS1
11 XTI
12 XTO
13 SDOUT4
14 SDOUT3
15 SDOUT2
16 SDOUT1
17 VSS2
18 DVDD
19 I2CSEL
20 INITRSTN
21 CKM[0]
22 LRCLKO
MS1033-E-03-PB
I/O
Function
Classification
I Test1 Pin (Internal pull-down)
Test
This pin must be connected to VSS.
I Clock Mode Select Pin2
Mode Select
I Clock Mode Select Pin1
Mode Select
I Serial Data Input Pin1
Digital Input
Conditional Jump Pin0
I
A conditional jump pin (JX0) is available by setting control register (JX0E) to Conditional Input
“1”.
I Serial Data Input Pin2
Digital Input
Conditional Jump Pin1
I
A conditional jump pin (JX1) is available by setting control register (JX1E) to Conditional Input
“1”.
I Serial Data Input Pin2
Digital Input
Serial Bit Clock Input Pin1
I
System Clock
Normally connected to the Bluetooth Data Clock line (256kHz/512kHz).
LR Channel Select Clock Pin1
I
System Clock
Normally connected to the Bluetooth LR Clock line (8kHz).
Digital
- Power Supply for Digital Section 3.0V ~ 3.6V
Power Supply
- Ground Pin 0V
Power Supply
Crystal oscillator input pin
I
Clock
Connect a crystal oscillator between this pin and the XTO pin, or input an
external clock to the XTI pin.
Crystal oscillator output pin
When a crystal oscillator is used, connect it between XTI and XTO. When an
O
Clock
external clock is used, leave this pin open. During initial reset, the output of
this pin is not determinable.
O Serial Data Output Pin4
Digital Output
Outputs “L” during initial reset.
O Serial Data Output Pin3
Digital Output
Outputs “L” during initial reset.
O Serial Data Output Pin2
Digital Output
Outputs “L” during initial reset.
O Serial Data Output Pin1
Digital Output
Outputs “L” during initial reset.
- Ground Pin 0V
Power Supply
Digital
- Power Supply for Digital Section 3.0V ~ 3.6V
Power Supply
I2C BUS Select Pin (Internal pull-down)
I2CSEL pin = “L”: 4-wired Interface
I
I2C Select
I2CSEL pin = “H”: I2CBus selected mode. SCL and SDA are active.
I2CSEL should be connected to “L” (VSS) or “H” (DVDD).
Reset Pin (for initialization)
I
Use to initialize the AK7734. When changing CKM [3:0] and changing XTI
Reset
or BITCLK input frequency, it is necessary to set this pin.
I Clock Mode Select Pin
Mode Select
O LR Channel Select Clock Pin
System Clock
Outputs “L” during initial reset in master mode.
Output
- 6 -
2010/06
[AK7734]
No.
Name
23 BITCLKO
24 CLKO
25 STO
SO
26
RDY
I/O
Function
O Serial Bit Clock Output Pin
Outputs “L” during initial reset in master mode.
O Clock Output Pin
Outputs “L” during initial reset.
Status Output Pin
O
Outputs “H” during initial reset.
Serial Data Output Pin for Microprocessor Interface
O
Outputs “L” during initial reset.
Data Write Ready Output Pin for Microprocessor Interface
O
Outputs RDY when SELRDY bit = “1”
27 LRCLKI2
I LR Channel Select Clock Pin2 (for SRC)
28 BITCLKI2
I Serial Bit Clock Input Pin2 (for SRC)
JX2
29
SDIN4
30
RQN
CAD1
31
SI
CAD0
32 SDA
33
SCLK
SCL
34 DVDD
35 VSS3
36 AVDRV
37 SRCLFLT
38 VSS4
39 DVDD
40 CKM[3]
41 SETSRC
42 TESTI2
43 AINR
MS1033-E-03-PB
Classification
System Clock
Output
Clock Output
Status
Microprocessor
Interface
Microprocessor
Interface
System Clock
Input
System Clock
Input
I Conditional Jump Pin2
A conditional jump pin (JX2) is available by setting control register (JX2E) Conditional Input
to “1”.
Serial Data Input Pin4
I
Digital Input
Normally used for SRC serial data input pin.
Microprocessor Interface Write Request Pin (I2CSEL pin = “L”)
Microprocessor
I
When initial reset state and Microcomputer interface are not in use, leave
Interface
RQN pin= “H”.
2
I2C
I I C Bus Address Setting Pin 1 (I2CSEL pin = “H”)
I Serial Data Input Pin for Microprocessor Interface (I2CSEL pin = “L”)
Microprocessor
When SI is not used, tie the SI pin = “L”.
Interface
I2C
I I2C Bus Address Setting Pin 0 (I2CSEL pin = “H”)
O I2CSEL pin = “L”
Open
Leave this pin Open. SDA outputs “L”.
2
I/O I C Bus Data Clock Pin (I2CSEL pin = “H”)
I2C
Outputs “Hi-z” during initial reset.
I Serial Data Clock Pin for Microprocessor Interface (I2CSEL pin = “L”)
Microprocessor
When SCLK is not used, tie the SCLK pin = “H”.
Interface
I2C
I I2C Bus Data Clock Pin (I2CSEL pin = “H”)
Digital
Power Supply for Digital Section 3.0V ~ 3.6V
Power Supply
- Ground Pin 0V
Power Supply
O AVDRV Pin
Connect a 1μF capacitor between this pin and No.35 pin (VSS3). No
Analog Output
external circuits should be connected to this pin. This pin outputs “L”
during initial reset.
O SRC, PLL RC component connect pin
Connect a 1μF capacitor between this pin and VSS4. This pin outputs “L” Analog Output
during initial reset.
- Ground Pin 0V
Power Supply
Digital
Power Supply for Digital Section 3.0V ~ 3.6V
Power Supply
I Clock Mode Select Pin3
Mode Select
I PLL Reference Clock Select Pin for SRC
Mode Select
I Test2 Pin (Internal pull-down)
Test
This pin must be connected to VSS.
I ADC Single-ended Input Pin for Rch
Analog Input
- 7 -
2010/06
[AK7734]
No.
Name
44 AINL
I/O
Function
I ADC Single-ended Input Pin for Lch
45 AVDD
Classification
Analog Input
Analog
Power Supply
I Analog Ground 0V
Analog Common Voltage Output pin
Connect 0.1μF and 2.2μF capacitors between this pin and No.47 pin
O
(VSS5). No external circuits should be connected to this pin. This pin
outputs “L” during initial reset.
I Ground Pin 0V
PLL RC component connect pin
Connect C=12nF between this pin and No.47 (VSS5). This pin outputs “L”
O
during initial reset.
46 VCOM
47 VSS5
48 LFLT
Analog Output
Power Supply
Analog Output
Note:
• Do NOT leave digital input pins open.
• When analog input pins (AINL, AINR) are not used, leave them open.
■ Handling of Unused Pin
The following table illustrates recommended states for open pins:
Classification
Analog
Digital
Pin Name
AINL, AINR
SDOUT1-4, CLKO, LRCLKO, BITCLKO, STO,
SO/RDY, XTO
TESTI1, TESTI2, SDIN1, JX0-2/SDIN2-4, XTI,
BITCLKI1-2, LRCLKI1-2
MS1033-E-03-PB
- 8 -
Setting
Leave Open.
Leave Open.
Connect to VSS.
2010/06
[AK7734]
ABSOLUTE MAXIMUM RATINGS
(VSS1=VSS2=VSS3=VSS4=VSS5=0V: Note 1)
Parameter
Symbol
min
Power Supply Voltage
Analog
AVDD
-0.3
Digital
DVDD
-0.3
Input Current (except for power supply pin )
IIN
–
Analog Input Voltage
VINA
-0.3
AINL pin, AINR pin
Digital Input Voltage
VIND
-0.3
Operating Ambient Temperature
Ta
-40
Storage Temperature
Tstg
-65
Note 1. All indicated voltages are with respect to ground.
Note 2. VSS1-5 must be connected to the same ground plane.
max
Units
4.3
4.3
±10
V
V
mA
AVDD+0.3
V
DVDD+0.3
85
150
V
ºC
ºC
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATING CONDITIONS
(VSS1=VSS2=VSS3=VSS4=VSS5=0V: Note 1)
Parameter
Symbol
min
typ
max
Units
Power Supply Voltage
Analog
AVDD
3.0
3.3
3.6
V
Digital
DVDD
3.0
3.3
3.6
V
Note 3. The power supply sequence for AVDD and DVDD is not critical but all power supplies must be On before start
operating the AK7734.
Note 4. Do not turn off the power supply of the AK7734 with the power supply of the surrounding device turned on.
DVDD must not exceed the pull-up of SDA and SCL of I2C BUS. (The diode exists for DVDD in the SDA and
SCL pins.)
WARNING: AKM assumes no responsibility for the usage beyond the conditions in the datasheet.
MS1033-E-03-PB
- 9 -
2010/06
[AK7734]
ELECTRIC CHARACTERISTICS
(1) Analog Characteristics
1) ADC
1-1) fs=8kHz
(Ta=25ºC; AVDD=DVDD=3.3V, BITCLK=64fs; Signal frequency 1kHz; Measurement frequency = 20Hz~3.4kHz
@fs=8kHz; CKM mode0(CKM[3:0]=LLLL) Unless otherwise specified.)
Parameter
min
typ
max
Units
Resolution
24
Bits
ADC
Section
Dynamic Characteristics
S/(N+D) (-1dBFS)
76
84
dB
Dynamic Range
(Note 5)
84
92
dB
S/N
84
92
dB
Inter-Channel Isolation (fin=1kHz) (Note 6)
90
110
dB
DC accuracy
Channel Gain Mismatch
0.1
0.3
dB
Analog Input
Input Voltage
(Note 7)
1.85
2.00
2.15
Vp-p
Input Impedance
38
58
kΩ
Note 5. - S/(N+D) when -60dB FS signal is applied.
Note 6. Inter-channel isolation between AINR and AINL at –1dB FS signal input.
Note 7. Full scale output voltage is FS=AVDD×2.0/3.3.
1-2) fs=48kHz
(Ta=25ºC; AVDD=DVDD=3.3V, BITCLK=64fs; Signal frequency 1kHz; Measurement frequency =20Hz~20kHz
@fs=48kHz; CKM mode0(CKM[3:0]=LLLL) Unless otherwise specified.)
Parameter
min
typ
max
Units
Resolution
24
Bits
ADC
Section
Dynamic Characteristics
S/(N+D) (-1dBFS)
75
83
dB
Dynamic Range (Filter A)
(Note 8)
87
96
dB
S/N (Filter A)
87
96
dB
Inter-Channel Isolation (fin=1kHz) (Note 9)
90
110
dB
DC accuracy
Channel Gain Mismatch
0.1
0.3
dB
Analog Input
Input Voltage
(Note 10)
1.85
2.00
2.15
Vp-p
Input Impedance
23
35
kΩ
Note 8. - S/(N+D) when -60dBFS signal is applied.
Note 9. Inter-channel isolation between AINR and AINL at –1dB FS signal input.
Note 10. Full scale output voltage is FS=AVDD×2.0/3.3.
MS1033-E-03-PB
- 10 -
2010/06
[AK7734]
(2) SRC
(Ta=25ºC; AVDD = DVDD=3.3V; VSS=0V, data = 24bit; measurement bandwidth = 20Hz~ FSO/2; unless otherwise
specified.)
Parameter
Symbol
min
typ
max
Units
Resolution
24
Bits
Input Sample Rate
FSI
7.35
96
kHz
Output Sample Rate
FSO
7.35
48
kHz
THD+N
(Input= 1kHz, 0dBFS)
FSO/FSI=44.1kHz/48kHz
-112
dB
FSO/FSI=44.1kHz/96kHz
-104
dB
FSO/FSI=48kHz/44.1kHz
-112
dB
FSO/FSI=48kHz/96kHz
-112
dB
FSO/FSI=48kHz/8kHz
-111
-103
dB
FSO/FSI=8kHz/48kHz
-113
dB
FSO/FSI=8kHz/44.1kHz
-78
dB
Dynamic Range (Input= 1kHz, -60dBFS)
FSO/FSI=44.1kHz/48kHz
113
dB
FSO/FSI=44.1kHz/96kHz
113
dB
FSO/FSI=48kHz/44.1kHz
113
dB
FSO/FSI=48kHz/96kHz
113
dB
FSO/FSI=48kHz/8kHz
109
112
dB
FSO/FSI=8kHz/48kHz
113
dB
FSO/FSI=8kHz/44.1kHz
113
dB
Dynamic Range (Input= 1kHz, -60dBFS, A-weighted
FSO/FSI=44.1kHz/48kHz
115
dB
Ratio between Input and Output Sample Rate
FSO/FSI
0.167
6
-
(3) DC Characteristics
(Ta=-40ºC~85ºC; AVDD=DVDD=3.0~3.6V)
Parameter
High Level Input Voltage
(Note 11)
Low Level Input Voltage
(Note 11)
SCL,SDA High Level Input Voltage
SCL,SDA Low Level Input Voltage
High Level Output Voltage Iout=-100μA
Low Level Output Voltage Iout=100μA (Note 12)
SDA Low Level Output Voltage Iout=3mA
Input Leak Current
(Note 13)
Input Leak Current (pull-down pin)
(Note 14)
Input Leak Current (XTI pin)
Symbol
VIH
VIL
VIH
VIL
VOH
VOL
VOL
Iin
Iid
Iix
min
80%DVDD
typ
max
20%DVDD
70%DVDD
30%DVDD
DVDD-0.5
0.5
0.4
±10
22
26
Units
V
V
V
V
V
V
V
μA
μA
μA
Note 11. SCL and SDA pins are not included. (SCLK pins are included)
Note 12. SDA pin is not included.
Note 13. Pull-down pins, and the XTI pin is not included.
Note 14. TESTI1 and TESTI2 pins are internal pulled-down pin. (Typ150kΩ)
MS1033-E-03-PB
- 11 -
2010/06
[AK7734]
(4) Current Consumption
(Ta=25ºC; AVDD=DVDD=3.0~3.6V (when typ=3.3V, max=3.6V))
Parameter
min
typ
max
Units
Power Supply Current
(Note 15)
21
AVDD
mA
65
DVDD
mA
86
AVDD+DVDD
120
mA
2
INITRSTN pin= “L” (reference) (Note 16)
mA
Note 15. The current of DVDD changes depending on the system frequency and contents of the DSP program.
Note 16. This is a reference value when using a crystal oscillator. Since most of the supply current at the initial reset
state are in the oscillator section, the value may vary according to the crystal type and the external circuit. This
is a “reference data” only.
MS1033-E-03-PB
- 12 -
2010/06
[AK7734]
DIGITAL FILTER CHARACTERISTICS
■ ADC Section
1. fs=8kHz
(Ta=-40ºC ~85ºC, AVDD=DVDD=3.0~3.6V, fs=8kHz; Note 17)
Parameter
Symbol
min
typ
max
Units
Passband (±0.1dB) (Note 18)
PB
0
3.15
kHz
(-1.0dB)
3.63
kHz
(-3.0dB)
3.83
kHz
Stopband
SB
4.66
kHz
Passband Ripple
(Note 18)
PR
±0.1
dB
Stopband Attenuation (Note 19, Note 20)
SA
68
dB
Group Delay Distortion
ΔGD
0
μs
Group Delay
(Ts=1/fs)
GD
16
Ts
Note 17. Frequency of each amplitude characteristic is in proportion to fs (sampling rate). The characteristic of the high
pass filter is not included.
Note 18. The passband is from DC to 3.15kHz when fs=8kHz.
Note 19. The stopband is 4.66kHz to 507.34kHz when fs=8kHz.
Note 20. When fs = 8kHz, the analog modulator samples the input signal at 512kHz. There is no attenuation of an input
signal in band (n x 512kHz ±4.66kHz; n=0, 1, 2, 3…) of integer times of the sampling frequency by the digital
filter.
2. fs=48kHz
(Ta=-40ºC~85ºC, AVDD=DVDD=3.0~3.6V, fs=48kHz; Note 17)
Parameter
Symbol
min
typ
max
Units
Passband (±0.1dB) (Note 21)
PB
0
18.9
kHz
(-1.0dB)
20.0
kHz
(-3.0dB)
23.0
kHz
Stopband
SB
28
kHz
Passband Ripple
(Note 21)
PR
±0.04
dB
Stopband Attenuation (Note 22,Note 23)
SA
68
dB
Group Delay Distortion
ΔGD
0
μs
Group Delay
(Ts=1/fs)
GD
16
Ts
Note 21. The passband is from DC to 18.9kHz when fs=48kHz.
Note 22. The stopband is 28kHz to 3.044MHz when fs=48kHz.
Note 23. When fs = 48kHz, the analog modulator samples the input signal at 512kHz. There is no attenuation of an
input signal in band (n x 3.072MHz ±28kHz; n=0, 1, 2, 3…) of integer times of the sampling frequency by the
digital filter.
MS1033-E-03-PB
- 13 -
2010/06
[AK7734]
SWITCHING CHARACTERISTICS
■ System Clock
(Ta=-40ºC~85ºC; AVDD=DVDD=3.0~3.6V)
Parameter
Symbol
XTI CKM[3:0]=0000, 0001, 0010
a) with a Crystal Oscillator:
fXTI
CKM[3:0]=0000 fs=44.1kHz
fs=48kHz
fXTI
CKM[3:0]=0001 fs=44.1kHz
fs=48kHz
b) with an External Clock
Duty Cycle
fXTI
CKM[3:0]=0000, 0010 fs=44.1kHz
fs=48kHz
fXTI
CKM[3:0]=0001 fs=44.1kHz
fs-48kHz
LRCLKI1 Frequency
(Note 24) fs
min
typ
max
Units
-
11.2896
12.288
16.9344
18.432
-
MHz
-
MHz
50
11.2896
12.288
16.9344
18.432
60
%
MHz
-
40
11.0
16.5
7.35
12.4
18.6
48
MHz
kHz
BITCLKI1 Frequency
64
a) CKM[3:0]=0010
High Level Width
tBCLKH
64
Low Level Width
tBCLKL
64
Frequency
0.46
3.072
3.1
fBCLK
b) CKM[3:0]=0011
(Note 25)
64
Duty Cycle
40
50
60
Frequency
fBCLK
2.75
3.072
3.1
c) CKM[3:0]=0100
(Note 26)
32
Duty Cycle
40
50
60
Frequency
fBCLK
230
256
258
d) CKM[3:0]=0101
(Note 25)
64
Duty Cycle
40
50
60
Frequency
fBCLK
460
512
516
e) CKM[3:0]=1001
(Note 27)
48
Duty Cycle
40
50
60
Frequency
fBCLK
2.06
2.304
2.32
f) CKM[3:0]=1010
(Note 27)
48
Duty Cycle
40
50
60
Frequency
fBCLK
345
384
387
LRCLKI2 Frequency
(Note 24) fs
7.35
48
BITCLKI2 Frequency
a) CKM[3:0]=1011
(Note 25)
64
Duty Cycle
40
50
60
Frequency
fBCLK
2.75
3.072
3.1
b) CKM[3:0]=1100
(Note 26)
32
Duty Cycle
40
50
60
Frequency
fBCLK
230
256
258
c) CKM[3:0]=1101
(Note 25)
64
Duty Cycle
40
50
60
Frequency
fBCLK
460
512
516
Note 24. LRCK frequency and sampling rate (fs) should be the same.
Note 25. When BITCLK is a source of master clock, it should be 64 times fs correctly. (64fs fixed)
Note 26. When BITCLK is a source of master clock, it should be 32 times fs correctly. (32fs fixed)
Note 27. When BITCLK is a source of master clock, it should be 48 times fs correctly. (48fs fixed)
MS1033-E-03-PB
- 14 -
fs
ns
ns
MHz
fs
%
MHz
fs
%
kHz
fs
%
kHz
fs
%
MHz
fs
%
kHz
kHz
fs
%
MHz
fs
%
kHz
fs
%
kHz
2010/06
[AK7734]
■ SRC Input Clock
(Ta=-40ºC~85ºC; AVDD=DVDD=3.0~3.6V; VSS=0V)
Parameter
Symbol
fs
LRCLKI2 Frequency
min
7.35
typ
max
96
Units
kHz
BITCLKI2 Frequency
Frequency
High Level Width
Low Level Width
fBCLK
tBCLKH
tBCLKL
0.23
32
32
3.072
6.144
MHz
ns
ns
(Ta=-40ºC~85ºC; AVDD=DVDD=3.0~3.6V)
Parameter
Symbol
INITRSTN
(Note 28)
tRST
Note 28. It must be “L” when power-up the AK7734.
min
600
typ
max
Units
ns
■ Reset
MS1033-E-03-PB
- 15 -
2010/06
[AK7734]
■ Audio Interface (SDIN1-4, SDOUT1-4)
(Ta=-40ºC~85ºC; AVDD=DVDD=3.0~3.6V, CL=20pF)
Parameter
Symbol
min
typ
max
Units
DSP Section Input SDIN1-4
(Note 29)
Delay Time from BICLKI1 “↑” to LRCLKI1 (Note 30, Note 31)
tBLRD
20
ns
Delay Time from LRCLKI1 to BITCLKI1 “↑” (Note 30, Note 31) tLRBD
20
ns
Serial Data Input Latch Setup Time
tBSIDS
80
ns
Serial Data Input Latch Hold Time
tBSIDH
80
ns
SRC Section Input SDIN4
(Note 32)
Delay Time from BICLKI2 “↑” to LRCLKI2
(Note 33)
tBLRD
20
ns
Delay Time from LRCLKI2 to BITCLKI2 “↑”
(Note 33) tLRBD
20
ns
Serial Data Input Latch Setup Time
tBSIDS
40
ns
Serial Data Input Latch Hold Time
tBSIDH
40
ns
Output SDOUT1-4
(Note 29)
BITCLKO Frequency
fBCLK
64
fs
BITCLKO Duty Factor
50
%
Delay Time from BITCLKO “↓” to LRCLKO
(Note 34) tBLRD
-20
40
ns
Delay Time from LRCLKI1 to Serial Data Output
(Note 35) tLRD
80
ns
Delay Time from BITCLKI1 to Serial Data Output
(Note 31) tBSOD
80
ns
Delay Time from LRCLKO to Serial Data Output
(Note 35) tLRD
80
ns
Delay Time from BITCLKO to Serial Data Output
(Note 31) tBSOD
80
ns
SDINn →SDOUTn (n=1-4)
(Note 36)
Delay Time from SDINn to SDOUTn Output
tIOD
60
ns
Note 29. In CKM modeB/C/D, LRCLKI2=LRCLKI1, BITCLKI2=BITCLKI1.
Note 30. BITCLKI1 edge must not occur at the same time as LRCLKI1 edge.
Note 31. In PCM mode 0/2, BITCLKI1 is polarity reversal.
Note 32. Except CKM mode B/C/D.
Note 33. BITCLKI2 edge must not occur at the same time as LRCLKI2 edge. When BIEDGE bit= “1”, this value is for
BITCLKI2 “↓” since BITCLK2 is polarity reversal.
Note 34. When SELBCK bit= “1”, this value is for BITCLKO “↑” since BITCLKO is polarity reversal.
Note 35. Except I2S.
Note 36. When SDIN1 → SDOUT1: Control Register Setting SELDO1[1:0] bit= “01”, OUT1E bit= “1”
SDIN2 → SDOUT2: Control Register Setting SELDO2[1:0] bit = “01”, OUT2E bit= “1”
SDIN3 → SDOUT3: Control Register Setting SELDO3[1:0] bit= “01”, OUT3E bit= “1”
SDIN4 → SDOUT4: Control Register Setting SELDO4 bit= “1”, OUT4E bit= “1”
MS1033-E-03-PB
- 16 -
2010/06
[AK7734]
■ Microprocessor Interface
(Ta=-40ºC~85ºC; AVDD=DVDD=3.0~3.6V; VSS=0V; CL=20pF)
Parameter
Symbol
Microprocessor Interface Signal
RQN Fall Time
tWRF
RQN Rise Time
tWRR
SCLK Fall Time
tSF
SCLK Rise Time
tSR
SCLK Frequency
fSCLK
SCLK Low Level Width
tSCLKL
SCLK High Level Width
tSCLKH
Microprocessor → AK7734
RQN High Level Width
tWRQH
From RQN “↑” to INITRSTN “↑”
tRST
From INITRSTN “↑” to RQN “↓”
tIRRQ
From RQN “↓” to SCLK “↓”
tWSC
From SCLK “↑” to RQN “↑”
tSCW
SI Latch Setup Time
tSIS
SI Latch Hold Time
tSIH
AK7734 → Microprocessor
Deley Time from SCLK “↓”to SO Output
tSOS
Hold Time from SCLK “↑” to SO Output (Note 37)
tSOH
Note 37. Except for, when writing to 8th bit of command code.
min
typ
max
Units
30
30
30
30
2.1
200
200
ns
ns
ns
ns
MHz
ns
ns
500
600
50
500
800
200
200
ns
ns
ms
ns
ns
ns
ns
200
ns
ns
200
■ I2C BUS Interface
(Ta=-40ºC~85ºC; AVDD=DVDD=3.0~3.6V)
Parameter
I2C Timing
SCL clock frequency
Bus Free Time Between Transmissions
Start Condition Hold Time
(prior to first Clock pulse)
Clock Low Time
Clock High Time
Setup Time for Repeated Start Condition
SDA Hold Time from SCL Falling
SDA Setup Time from SCL Rising
Rise Time of Both SDA and SCL Lines
Fall Time of Both SDA and SCL Lines
Setup Time for Stop Condition
Pulse Width of Spike Noise Suppressed
by Input Filter
Capacitive load on bus
Note 38. I2C-bus is a trademark of NXP B.V.
MS1033-E-03-PB
Symbol
min
typ
max
Unit
400
fSCL
tBUF
1.3
kHz
μs
tHD:STA
0.6
μs
tLOW
tHIGH
tSU:STA
tHD:DAT
tSU:DAT
tR
tF
tSU:STO
1.3
0.6
0.6
0
0.1
μs
μs
μs
μs
μs
μs
μs
μs
tSP
0.3
0.3
0.6
0
Cb
- 17 -
0.9
50
ns
400
pF
2010/06
[AK7734]
■ Timing Diagram
1/fXTI
1/fXTI
tXTI=1/fXTI
XTI
VIH
VIL
1/fs
ts=1/fs
1/fs
LRCLKI1,2
VIH
VIL
1/fBCLK
1/fBCLK
tBCLK=1/fBCLK
VIH
BITCLKI1,2
VIL
tBCLKH
tBCLKL
Figure 3. System Clock
INITRSTN
tRST
VIL
Figure 4. Reset
Note 39. The INITRSTN pin must be “L” when power-up/power-down the AK7734.
MS1033-E-03-PB
- 18 -
2010/06
[AK7734]
VIH
VIL
LRCLKI1,2
tBLRD
tLRBD
VIH
VIL
BITCLKI1,2
tBSIDS
tBSIDH
VIH
VIL
SDINn
n=1,2,3,4
Figure 5. Audio Interface (DSP Section Slave Mode Input)
VIH
VIL
LRCLKI2
tBLRD
tLRBD
VIH
VIL
BITCLKI2
tBSIDS
tBSIDH
VIH
VIL
SDIN4
Figure 6. Audio Interface (SRC Section Input)
VIH
VIL
LRCLKI1,2
tLRD
VIH
VIL
BITCLKI1,2
tLRD
tBSOD
SDOUTn
n=1,2,3,4
tBSOD
50%DVDD
Figure 7. Audio Interface (Slave Mode Output)
MS1033-E-03-PB
- 19 -
2010/06
[AK7734]
LRCLKO
50%DVDD
tMBL
tMBL
BITCLKO
50%DVDD
tBSIDS
tBSIDH
VIH
VIL
SDINn
n=1,2,3,4
Figure 8. Audio Interface (Master Mode Input)
LRCLKO
50%DVDD
tLRD
BITCLKO
50%DVDD
tLRD
tBSOD
SDOUTn
n=1,2,3,4
tBSOD
50%DVDD
Figure 9. Audio Interface (Master Mode Output)
MS1033-E-03-PB
- 20 -
2010/06
[AK7734]
VIH
VIL
RQN
tWRF
tWRR
tSF
tSR
VIH
VIL
SCLK
tSCLKL
tSCLKH
1/fSCLK
1/fSCLK
VIH
VIL
INITRSTN
VIH
VIL
RQN
tRST
tIRRQ
Figure 10. Microprocessor Interface
MS1033-E-03-PB
- 21 -
2010/06
[AK7734]
RQN
VIH
VIL
tWRQH
VIH
SI
VIL
tSIS
tSIH
VIH
VIL
SCLK
tWSC
tSCW
tWSC
tSCW
Figure 11. Microprocessor Interface (Microprocessor → AK7734)
VIH
VIL
SCLK
VOH
SO
VOL
tSOH
tSOS
Figure 12. Microprocessor Interface (AK7734 → Microprocessor)
VIH
SDA
tBUF
tLOW
tR
tHIGH
VIL
tF
tSP
VIH
SCL
VIL
tHD:STA
Stop
tHD:DAT
tSU:DAT
tSU:STA
tSU:STO
Start
Stop
Start
Figure 13. I2C Bus Interface
MS1033-E-03-PB
- 22 -
2010/06
[AK7734]
PACKAGE
48pin LQFP (Unit: mm)
1.60MAX
9.00 ± 0.20
0.10 ± 0.07
7.00
1.4TYP
25
24
48
13
7.00
37
9.00 ± 0.20
36
12
0.17 ± 0.05
0.50
0.19 ± 0.05
0.10 M
1.00
0˚ ~ 10˚
0.10 S
0.50 ± 0.20
■ Materials and Lead Specification
Package:
Lead frame:
Lead-finish:
MS1033-E-03-PB
Epoxy
Copper
Soldering (Pb free) plate
- 23 -
2010/06
[AK7734]
MARKING
AKM
AK7734XQ
XXXXXXX
1
1)
2)
3)
4)
Pin #1 indication
Date Code: XXXXXXX(7digits)
Marking Code: AK7734XQ
Asahi Kasei Logo
REVISION HISTORY
Date (YY/MM/DD)
09/03/24
09/11/16
Revision
00
01
Reason
First Edition
Description
Change
Error
Correction
Page Contents
6, 7
13
32
33
63
Description
Change
63
73
87
91
10/01/06
MS1033-E-03-PB
02
Specification
Addition
32
Digital Ground 0V → Ground 0V
Analog Ground 0V → Ground 0V
DIGITAL FILTER CHARACTERISTICS
Note 20:
“n x 512kHz ±3.665kHz” → “n x 512kHz ±4.66kHz”
Note 23:
“n x 3.072MHz ±21.99kHz” → “n x 3.072MHz ±28kHz”
Note 59: DIF mode0 → DIF1 mode0
Note 62: DOF2 mode3 → DOF2 mode0
Note63: DOF1 mode3 → DOF1 mode0
D23~D17 → D23~D16
D16~D8 → D15~D8
D7~D1 → D7~D0
Read Commands for MIR2-4 were added.
Note 77 was changed.
Descriptions in bit were changed to in byte in Table3.
Note 2 was changed.
1) Ground and Power Supply: Descriptions were changed.
“VSS1-5 should be connected to the same analog plane.” was
added.
CLKS mode7 was added.
Note 61 was added.
- 24 -
2010/06
[AK7734]
Date (YY/MM/DD)
10/06/11
Revision
03
Reason
Error
Correction
Description
Addition
Page Contents
4
The description of the output of SHIFT was changed from 44Bit to
48Bit in Figure 2.
From RQN “↑” to INITRSTN “↑”
17
From INITRSTN “↑” to RQN “↓”
The relation of RQN pin and INITRSTN pin was added in
21
Figure 10.
IMPORTANT NOTICE
z These products and their specifications are subject to change without notice.
When you consider any use or application of these products, please make inquiries the sales office of Asahi Kasei
Microdevices Corporation (AKM) or authorized distributors as to current status of the products.
z Descriptions of external circuits, application circuits, software and other related information contained in this document are
provided only to illustrate the operation and application examples of the semiconductor products. You are fully responsible
for the incorporation of these external circuits, application circuits, software and other related information in the design of
your equipments. AKM assumes no responsibility for any losses incurred by you or third parties arising from the use of
these information herein. AKM assumes no liability for infringement of any patent, intellectual property, or other rights in
the application or use of such information contained herein.
z Any export of these products, or devices or systems containing them, may require an export license or other official
approval under the law and regulations of the country of export pertaining to customs and tariffs, currency exchange, or
strategic materials.
z AKM products are neither intended nor authorized for use as critical componentsNote1) in any safety, life support, or other
hazard related device or systemNote2), and AKM assumes no responsibility for such use, except for the use approved with
the express written consent by Representative Director of AKM. As used here:
Note1) A critical component is one whose failure to function or perform may reasonably be expected to result,
whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and
which must therefore meet very high standards of performance and reliability.
Note2) A hazard related device or system is one designed or intended for life support or maintenance of safety or for
applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or perform may
reasonably be expected to result in loss of life or in significant injury or damage to person or property.
z It is the responsibility of the buyer or distributor of AKM products, who distributes, disposes of, or otherwise places the
product with a third party, to notify such third party in advance of the above content and conditions, and the buyer or
distributor agrees to assume any and all responsibility and liability for and hold AKM harmless from any and all claims
arising from the use of said product in the absence of such notification.
MS1033-E-03-PB
- 25 -
2010/06
[AK7734]
Thank you for your access to AKM products information.
More detail product information is available, please contact our sales
office or authorized distributors.
MS1033-E-03-PB
- 26 -
2010/06