WM8742 Просмотр технического описания (PDF) - Cirrus Logic

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WM8742

24-bit 192kHz DAC with Advanced Digital Filtering

Cirrus Logic 

Production Data

WM8742

PIN DESCRIPTION (SOFTWARE CONTROL MODE)

PIN

NAME

TYPE

PCM MODE

DESCRIPTION

8FS PCM MODE

DSD MODES

1

LRCLK /

Digital input Audio interface left/right Audio interface left/right DSD left audio data in

DSDL

clock input

clock input

2

DIN /

Digital input Audio interface data input Audio interface left data Unused

DINL

input

3

BCLK /

Digital input Audio interface bit clock Audio interface bit clock 64fs system clock input

DSD64CLK

input

input

4

FSEL /

Digital input Unused

DINR

Tri-level

Audio interface right data Unused

input

5

MCLK

Digital input Master clock input

Master clock input

Unused

6

DIFFHW

Digital input Differential mono mode Differential mono mode Differential mono mode

Internal pull- selection

selection

selection

down

0 = normal operation

0 = normal operation

0 = normal operation

1 = differential mono

mode

1 = differential mono

mode

1 = differential mono

mode

7

DGND

Supply

Digital ground

Digital ground

Digital ground

8

DVDD

Supply

Digital supply

Digital supply

Digital supply

9

AVDDR

Analogue Input Right analogue positive Right analogue positive Right analogue positive

reference

reference

reference

10

AGNDR

Analogue Input Right analogue negative Right analogue negative Right analogue negative

reference

reference

reference

11

VMIDR

Analogue

Output

Right analogue midrail

decoupling pin

Right analogue midrail

decoupling pin

Right analogue midrail

decoupling pin

12

VOUTRP

Analogue

Output

Right DAC positive

output

Right DAC positive

output

Right DAC positive

output

13

VOUTRN

Analogue

Output

Right DAC negative

output

Right DAC negative

output

Right DAC negative

output

14

AGND

Supply

Analogue ground

Analogue ground

Analogue ground

15

AVDD

Supply

Analogue supply

Analogue supply

Analogue supply

16

VOUTLN

Analogue

Left DAC negative output Left DAC negative output Left DAC negative output

Output

17

VOUTLP

Analogue

Left DAC positive output Left DAC positive output Left DAC positive output

Output

18

VMIDL

Analogue

Output

Left analogue midrail

decoupling pin

Left analogue midrail

decoupling pin

Left analogue midrail

decoupling pin

19

AGNDL

Analogue Input Left analogue negative

Left analogue negative

Left analogue negative

reference

reference

reference

20

AVDDL

Analogue Input Left analogue positive

Left analogue positive

Left analogue positive

reference

reference

reference

21

ZFLAG

Digital Output Zero flag output

Zero flag output

Zero flag output

22

OSR/DSDR

Digital input Unused

Unused

Tri-level

23

IWO /

Digital

Buffered audio interface Unused

DOUT

input/output data output

DSD right audio data in

Unused

w

PD, Rev 4.3, February 2013

5

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