[AK7752]

No.

Pin Name

I/O

Function

Classification

50

CKM[1]

I Clock Mode Select Pin 1

Mode Select

51

CKM[0]

I Clock Mode Select Pin 0

52

TESTI1

I

TEST pin (Internal pull-down)

Connect to DVSS.

TEST

53

LFLT

O

PLL RC component connect pin

Connect a series resistor and capacitor pair to this pin.

Analog Output

54

AVSS

- Analog ground Pin 0V (Silicon substrate potential)

Analog

55

AVDD

- Power Supply Pin for Analog Section (3.3V typical)

Power Supply

56

ANE_IN

I

ADC Analog Input Pin (ANE_IN)

Normally connected to the microphone amplifier.

Analog Input

57

ALINE_IN

I

ADC Analog Input Pin (ALINE_IN)

Normally the receiving analog phone voice signal is input.

58

AVDD

- Analog Power Supply Pin (3.3V typical)

Analog

Power Supply

59

VREFH

I

Analog Reference Voltage Input Pin

Connect this pin to AVDD. Connect capacitors of 0.1 uF and 10 uF between this

pin and AVSS.

Analog Input

60

VCOM

O

Analog Common Voltage Output pin

Connect capacitors of 0.1 uF and 10 uF between this pin and AVSS. No external

circuits should be connected to this pin.

Analog Output

61

VREFL

I

Analog Reference Voltage Input pin

Connect this pin to AVSS.

Analog Input

62

AVSS

- Analog ground Pin 0V (Silicon substrate potential)

Analog

Power Supply

63 ALINE_OUT O

DAC Analog Output Pin (ALINE_OUT)

Normally the sending analog phone voice signal is output.

64 ANE_OUT

O

DAC Analog Output Pin (ANE_OUT)

Normally connected to the speaker amplifier.

Analog Output

Note 1. Do NOT leave digital input pins open except for pins that indicate “Internal pull down”, BITCLK_I and

SYNC_I at master mode. (Internal pull down pins except TEST1 and TEST2 pins leave them open or connect

them to DVSS. Connect TEST1 and TEST2 pins to DVSS).

Note 2. When analog input pins (ALINE_IN, ANE_IN) are not used, leave them open.

Note 3. Connect I2CSEL to “L” (DVSS) or “H” (DVDD).

Relationship between I2CSEL and SDA

uP I/F

I2CSEL

INIT_RESET_N

SDA

Normal Serial

L

L

L

Interface

L

H

L

H

L

“Hi-Z” → pull-up

H

H

function

MS0578-E-01

-PB

2007/0

9

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