WM8742 데이터 시트보기 (PDF) - Cirrus Logic

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WM8742

24-bit 192kHz DAC with Advanced Digital Filtering

Cirrus Logic 

Production Data

WM8742

PIN DESCRIPTION (HARDWARE CONTROL MODE)

PIN

NAME

TYPE

PCM MODE

DESCRIPTION

DSD DIRECT MODE

1

LRCLK /

Digital input Audio interface left/right clock input

DSD left audio data in

DSDL

2

DIN /

Digital input Audio interface data input

Unused

DINL

3

BCLK /

Digital input Audio interface bit clock input

64fs system clock input

DSD64CLK

4

FSEL /

Digital input Selects between one of three digital

Unused

DINR

Tri-level

filters – see Table 50

5

MCLK

Digital input Master clock input

Unused

6

DIFFHW

Digital input Differential mono mode selection

Internal pull-

down

0 = normal operation

1 = differential mono mode

7

DGND

Supply

Digital ground

Differential mono mode selection

0 = normal operation

1 = differential mono mode

Digital ground

8

DVDD

Supply

Digital supply

Digital supply

9

AVDDR

Analogue Input Right analogue positive reference

Right analogue positive reference

10

AGNDR

Analogue Input Right analogue negative reference

Right analogue negative reference

11

VMIDR

12

VOUTRP

13

VOUTRN

14

AGND

Analogue

Output

Analogue

Output

Analogue

Output

Supply

Right analogue midrail decoupling pin

Right DAC positive output

Right DAC negative output

Analogue ground

Right analogue midrail decoupling pin

Right DAC positive output

Right DAC negative output

Analogue ground

15

AVDD

Supply

Analogue supply

Analogue supply

16

VOUTLN

Analogue

Left DAC negative output

Left DAC negative output

Output

17

VOUTLP

Analogue

Left DAC positive output

Left DAC positive output

Output

18

VMIDL

Analogue

Left analogue midrail decoupling pin

Left analogue midrail decoupling pin

Output

19

AGNDL

Analogue Input Left analogue negative reference

Left analogue negative reference

20

AVDDL

Analogue Input Left analogue positive reference

Left analogue positive reference

21

ZFLAG

Digital Output Zero flag output

Unused

22

OSR/DSDR

Digital input Controls internal oversampling rate:

DSD right audio data in

Tri-level

0 = low rate

Z = medium rate

1 = high rate

23

IWO /

Digital

Controls audio interface wordlength –

Unused

DOUT

input/output see Table 46

w

PD, Rev 4.3, February 2013

7

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