AK7756 Datasheet, PDF (7/27 Pages) Asahi Kasei Microsystems – DSP with Mono CODEC + Mic/Lineout Amp

[AK7756]
23 VCOM
O
Analog Common Voltage Output Pin
Connect 0.1μF and 2.2μF capacitor to VSS2. Outputs VSS2 during initial reset.
24 VSS2
- Ground Pin
25 AVDD
- Analog Power Supply Pin 3.0 ∼ 3.6V
26 MICBIAS
O Microphone bias. Outputs Hi-Z during initial reset.
27 ^AIN
INP
I Single-ended Analog Input pin (MDIF bit = “0”)
I Positive Microphone input pin (MDIF bit = “1”)
28 INN
I Negative Microphone input pin (MDIF bit = “1”)
Note 1. All digital input pins must not be left floating.
Note 2. DVDD or VSS1 voltage must be input to the I2CSEL pin.
Note 3. All analog input pins (INP/AIN, INN pins) must be supplied signal via AC-coupling capacitor.
Note 4. Analog output pins (AOUT pin) must deliver signal via AC-coupling capacitor
No. Pin Name
1 DVDD18
2 VSS1
3 DVDD
4 SDOUT1
5
JX0
SDIN2
EXTEEP
6
RQN
EEST
7
SDOUT3
SI
SCL
8
SCLK
SDA
9
SO
STO
10 ^RDY
SDOUT1
SDOUT2
11 RDY
12 NC
PIN/FUNCTION (AK7756VF)
I/O
Function
- Digital Power Supply 2 Pin. 1.7 ∼ 1.9V
- Ground Pin
- Digital Power Supply 1 Pin. 3.0 ∼ 3.6V
O
Audio Serial Data Output1 Pin.
Outputs “L” during initial reset.
I Conditional Jump Pin0
(JXOE bit = “1”)
I Audio Serial Data Input 2 Pin (JXOE bit = “0”)
Start to Download from external EEPROM (I2CSEL pin = “H” : I²C Bus Mode)
I “H”: start download (download from external memory)
“L”: normal operation
I
μP I/F Write Request Pin (I2CSEL pin = “L” : SPI Mode)
When initial reset and μP I/F are not in use, leave the RQN pin High level.
EEPROM download busy output (I2CSEL pin = “H” and SELDO3 bit = “0”)
O H: Download is busy. L: download is complete.
Outputs “L” during initial reset.
O
Audio Serial Data Output Pin3 (I2CSEL pin = “H” and SELDO3 bit = “1”)
Outputs “L” during initial reset.
I Control Data Input Pin (I2CSEL pin = “L”: SPI Mode)
I
Control Data Clock Pin (I2CSEL pin = “H”: I²C Bus Mode)
Outputs Hi-Z during initial reset.
I
Control Data Clock Pin (I2CSEL pin = “L”: SPI Mode)
Set this pin to “H” when there are no clock inputs.
I/O
Control Data Input /Output Pin (I2CSEL pin = “H”: I²C Bus Mode)
Outputs Hi-Z during initial reset.
O
Control Data output Pin (I2CSEL pin = “L”: SPI Mode)
Outputs “L” during initial reset.
O Status Output Pin
O Data Write Ready Output Pin for μP Interface
O Audio Serial Data Output Pin1
Outputs “H” during initial reset.
O Audio Serial Data Output2 Pin
O Data Write Ready Output Pin for μP Interface.
Outputs “L” during initial reset.
-
No Connect Pin.
This pin must be connected to VSS1.
MS1218-E-00-PB
7
2010/08