AK7756 Datasheet, PDF (6/27 Pages) Asahi Kasei Microsystems – DSP with Mono CODEC + Mic/Lineout Amp

No. Pin Name
1 LFLT
2 I2CSEL
3 XTO
4 XTI
5 DVDD18
6 VSS1
7 DVDD
8 SDOUT1
9 ^JX0
SDIN2
EXTEEP
10
RQN
EEST
11
SDOUT3
SI
SCL
12
SCLK
SDA
13
SO
STO
14 ^RDY
SDOUT1
SDOUT2
15 ^RDY
16 LRCK
17 BICK
18 SDIN1
19 IRSTN
20 JX1
21 AOUT
22 MPRF
[AK7756]
PIN/FUNCTION (AK7756EN)
I/O
Function
Output Pin for Loop Filter of PLL Circuit
O This pin must be connected to VSS2 with 8.2KΩ and 33nF in series.
Outputs “L” during initial reset.
I μP Control Mode Select Pin
“H”: I²C, “L”: SPI
O Master Clock Output Pin. Outputs Hi-Z during initial reset.
I External Master Clock Input Pin
- 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.
I/O Audio channel select Pin
I/O Audio Serial Data Clock Pin
I Audio Serial Data Input 1 Pin
I
Reset Pin (active low) The AK7756 must be reset once upon power-up.
“H”: Power-up, “L”: Initialize the control register.
I Conditional Jump Pin1
O Analog Output Outputs. Outputs VSS2 during initial reset.
O
Output Pin for Ripple Filter of MICBIAS Circuit
Connect 1.0μF capacitor to VSS2. Outputs AVDD during initial reset.
MS1218-E-00-PB
6
2010/08