AD1849K datasheet(7/28 Pages) AD

Part #	AD1849K

Description	Serial-Port 16-Bit SoundPort Stereo Codec

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Manufacturer	AD [Analog Devices]

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AD1849K

REV. 0

–7–

PIN DESCRIPTION

Digital Signals

Pin Name

PLCC

TQFP

I/O

Description

SDRX

1

39

I

Receive Serial Data Pin

SDTX

44

38

O

Transmit Serial Data Pin

SCLK

43

37

I/O

Bidirectional Serial Bit Clock

FSYNC

42

36

O

Frame Sync Output Signal

TSOUT

41

35

O

Chaining Word Output

TSIN

40

34

I

Chaining Word Input

D/

C

35

29

I

Data/Control Select Input

CIN1

6

44

I

Crystal 1 Input

COUT1

7

1

O

Crystal 1 Output

CIN2

10

4

I

Crystal 2 Input

COUT2

11

5

O

Crystal 2 Output

CLKIN

4

42

I

External Sample Clock Input (256

× F

S)

CLKOUT

5

43

O

External Sample Clock Output (256

× F

S)

PDN

13

7

I

Power Down Input (Active HI)

RESET

12

6

I

Reset Input (Active LO)

PIO1

37

31

I/O

Parallel Input/Output Bit 1

PIO0

36

30

I/O

Parallel Input/Output Bit 0

Analog Signals

Pin Name

PLCC

TQFP

I/O

Description

LINL

18

12

I

Left Channel Line Input

LINR

16

10

I

Right Channel Line Input

MINL

17

11

I

Left Channel Microphone Input (–20 dB from Line Level if MB = 0 or Line

Level if MB = 1)

MINR

15

9

I

Right Channel Microphone Input (–20 dB from Line Level if MB = 0 or Line

Level if MB = 1)

LOUT0L

32

26

O

Left Channel Line Output 0

LOUT0R

33

27

O

Right Channel Line Output 0

LOUT1L

31

25

O

Left Channel Line Output 1

LOUT1R

29

23

O

Right Channel Line Output 1

LOUT1C

30

24

I

Common Return Path for Large Current from External Headphones

MOUT

27

21

O

Mono Speaker Output

MOUTR

28

22

I

Mono Speaker Output Return

C0

14

8

O

External 1.0

µF Capacitor (±10%) Connection

C1

20

14

O

External 1.0

µF Capacitor (±10%) Connection

N/C

26

20

No Connect (Do Not Connect)

N/C

34

28

No Connect (Do Not Connect)

VREF

21

15

O

Voltage Reference (Connect to Bypass Capacitor)

CMOUT

19

13

O

Common Mode Reference Datum Output (Nominally 2.25 V)

Power Supplies

Pin Name

PLCC

TQFP

I/O

Description

VCC

23 & 24

17, 18

I

Analog Supply Voltage (+5 V)

GNDA

22 & 25

16, 19

I

Analog Ground

VDD

3, 8, 38

41, 2, 32

I

Digital Supply Voltage (+5 V)

GNDD

2, 9, 39

40, 3, 33

I

Digital Ground

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AD1849K Datasheet(PDF) 7 Page - Analog Devices

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