AK7755EN_16 Datasheet, PDF (9/109 Pages) Asahi Kasei Microsystems – DSP with Mono ADC Stereo CODEC + Mic/Lineout Amp

[AK7755]
■ Pin Functions
No. Pin Name
1 VCOM
2 AVSS
3 I2CSEL
4
SDIN2
JX1
5
SDIN1
JX0
6
STO
RDY
7 LRCK
8 BICK
9 CLKO
10 XTO
11 XTI
12 TVDD
13 DVSS
SDOUT3
14 ^JX2
MAT1
SDOUT2
15 ^JX3
MAT0
16
SDOUT1
EEST
17
SO
SDA
SCLK
18
SCL
19 ^SI
EXTEEP
I/O
Function
Common Voltage Output Pin of Analog Block
O ▪ Connect a 2.2μF capacitor between AVSS.
▪ Do not connect to an external circuit.
- Analog Ground Pin 0V
I²C-BUS Select Pin
I
▪ I2CSEL pin = “L”: SPI Interface
▪ I2CSEL pin = “H”: I²C-bus Interface
The I2CSEL pin must be fixed to “L” (DVSS) or “H” (TVDD).
I Serial Data Input2 Pin
I External Conditional Jump1 Pin (JX1E bit = “1”)
I Serial Data Input1 Pin
I External Conditional Jump0 Pin (JX0E bit = “1”)
O Status Output Pin
O RDY Pin
I/O LR Channel Select Pin (Internal pull-down)
I/O Serial Bit Clock Output Pin (Internal pull-down)
O Clock Output Pin
Crystal oscillator output pin
O ▪ When a crystal oscillator is used, connect it between XTI and XTO.
▪ When a crystal oscillator is not used, leave this pin as open.
Crystal oscillator input pin
I
▪ When a crystal oscillator is used, connect it between XTI and XTO.
▪ When a crystal oscillator is not used, connect this pin to the external clock
or leave open.
- Digital IO Power Supply Pin: 1.7~3.6V (typ. 3.3V)
I Ground Pin 0V
O Serial Data Output3 Pin
I External Conditional Jump2 Pin (JX2E bit = “1”)
I
I2CSEL pin = EXTEEP pin = MATSEL pin = “H”
EEPROM Download Mat Select Address1
O Serial Data Output2 Pin
I External Conditional Jump3 Pin (JX3E bit = “1”)
I
I2CSEL pin = EXTEEP pin = MATSEL pin = “H”
EEPROM Download Mat Select Address0
O Serial Data Output1 Pin
O EEPROM Interface Status
O SO Pin (I2CSEL pin = “L”)
I/O I²CBUS Interface (I2CSEL pin = “H”)
I
Serial Data Clock Pin for SPI Interface (I2CSEL pin = “L”)
▪ Set this pin to “H” when there is no clock input.
I/O
I²CBUS Interface Pin (I2CSEL pin = “H”)
EEPROM Download This becomes an output pin when EXTEEP pin = “H”.
I
Serial Data Input Pin for SPI Interface (I2CSEL pin = “L”)
▪ Set this pin to “L” when not used.
I EEPROM Download Control Pin (I2CSEL pin = “H”)
014006643-E-00
-9-
2014/10