AKD7770 datasheet(7/22 Pages) AKM

Part #	AKD7770

Description	Audio DSP with Multi-Channel Audio CODEC

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Manufacturer	AKM [Asahi Kasei Microsystems]

Direct Link	http://www.akm.com

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[AK7770]

MS0699-E-01-PB

2008/06

- 7 -

No.

Pin name

I/O

Function

Classification

26

LRCLK1

I Left/Right Clock Input 1 Pin

System clock

27

CLK1

I Master Clock 1 Pin

28

BITCLK1

I Bit Clock 1 Pin

29

SDIN1

I Serial Data Input 1 Pin

Serial data

30

LRCLK2

I Left/Right Clock Input 2 Pin

System clock

31

CLK2

I Master Clock 2 Pin

32

BITCLK2

I Bit Clock 2 Pin

33

SDIN2

I Serial Data Input 2 Pin

34

CAD1

I I2C Bus Address Pin 1

I2C interface

35

CAD0

I I2C Bus Address Pin 0

I2C interface

36

SCL

I I2C Clock Pin

I2C interface

37

DVDD

- Digital Power Supply Pin 3.3V(typ)

38

VSS3

- Digital Ground Pin 0V

39

DVDD18

- Digital Power Supply Pin 1.8V(typ)

Digital power

supply

40

SDA

I/O I2C Bus Data Clock Pin

SDA goes to “Hi-Z” during initial reset.

I2C interface

41

HPEN

O Headphone Detect Output Pin

Initial reset for headphone search is determined by the state of HDT

Headphones

42

STO

O Status Output Pin

When HDT = “H”, STO = “L”

When HDT = “L”, STO = “H”

The output in initial reset is “H”

Status

43

TX

O

S/PDIF transmitter Output Pin

S/PDIF data is output when SELTX [1:0] bit= “00”. “L” during initial rest.

TX

44

DVDD

- Digital Power Supply Pin 3.3V(typ)

45

VSS3

- Digital Ground Pin 0V

46

DVDD18

- Digital Power Supply Pin 1.8V(typ)

Digital power

supply

47

SDIN3

I Serial Data Input 3 Pin

Serial data

48

BITCLK3

I Bit Clock 3 Pin

49

CLK3

I Master Clock 3 Pin

50

LRCLK3

I Left/Right Clock 3 Pin

System clock

51

CKM [1]

I

Clock Mode Selection Pin

Connect to GND.

Mode selection

52

TESTI3

I Test Pin

This pin must be connected to DVDD.

Test

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