DSD1794DBR datasheet(6/47 Pages) TI

Part #	DSD1794DBR

Description	24-BIT, 192-kHz SAMPLING, ADVANCED SEGMENT, AUDIO STRRO DIGITAL-TO-ALALOG CONVERTER

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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DSD1794

SLES077A − MARCH 2003 − REVISED NOVEMBER 2003

www.ti.com

6

Terminal Functions

TERMINAL

I/O

DESCRIPTIONS

NAME

I/O

DESCRIPTIONS

ADR0

10

I

I2C address 0 (1)

ADR1

11

I

I2C address 1 (1)

AGND1

19

−

Analog ground (internal bias)

AGND2

24

−

Analog ground (internal bias)

AGND3L

27

−

Analog ground (L-channel DACFF)

AGND3R

16

−

Analog ground (R-channel DACFF)

DBCK

3

I

Bit clock input for DSD modes (1)

DGND

8

−

Digital ground

DSDL

1

I/O

L-channel audio data input when in DSD and external DF modes

PCM-mode zero flag for L-channel when in zero-flag output mode (2)

DSDR

2

I/O

R-channel audio data input when in DSD and external DF modes (2)

PCM-mode zero flag for R−channel when in zero-flag output mode

IOUTL+

25

O

L-channel analog current output +

IOUTL–

26

O

L-channel analog current output –

IOUTR+

17

O

R-channel analog current output +

IOUTR–

18

O

R-channel analog current output –

IREF

20

−

Output current reference bias pin

PBCK

6

I

Bit clock input. Connected to GND in DSD mode (1)

PDATA

5

I

Serial audio data input for PCM-format operation (1)

PLRCK

4

I

Left and right clock (fS) input for PCM-format operation. WDCK clock input for external DF mode.

Connected to GND for DSD mode (1)

RST

14

I

Reset (1)

SCL

12

I

I2C clock (1)

SCK

7

I

System clock input (1)

SDA

13

I/O

I2C data (3)

VCC1

23

−

Analog power supply, 5 V

VCC2L

28

−

Analog power supply (L-channel DACFF), 5 V

VCC2R

15

−

Analog power supply (R-channel DACFF), 5 V

VCOML

22

−

L-channel internal bias decoupling pin

VCOMR

21

−

R-channel internal bias decoupling pin

VDD

9

−

Digital power supply, 3.3 V

(1) Schmitt-trigger input, 5-V tolerant

(2) Schmitt-trigger input and output. 5-V tolerant input, and CMOS output

(3) Schmitt-trigger 5-V tolerant input and open-drain/3-state output

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