REV. A

AD1837A

–20–

Table V. Control Register Map

Register Address

Register Name

Description

Type

Width

Reset Setting (Hex)

0000

DACCTRL1

DAC Control 1

R/

W

10

000

0001

DACCTRL2

DAC Control 2

R/

W

10

000

0010

DACVOL1

DAC Volume—Left 1

R/

W

10

3FF

0011

DACVOL2

DAC Volume—Right 1

R/

W

10

3FF

0100

DACVOL3

DAC Volume—Left 2

R/

W

10

3FF

0101

DACVOL4

DAC Volume—Right 2

R/

W

10

3FF

0110

DACVOL5

DAC Volume—Left 3

R/

W

10

3FF

0111

DACVOL6

DAC Volume—Right 3

R/

W

10

3FF

1000

DACVOL7

DAC Volume—Left 4

R/

W

10

3FF

1001

DACVOL8

DAC Volume—Right 4

R/

W

10

3FF

1010

ADCPeak0

ADC Left Peak

R

6

000

1011

ADCPeak1

ADC Right Peak

R

6

000

1100

ADCCTRL1

ADC Control 1

R/

W

10

000

1101

ADCCTRL2

ADC Control 2

R/

W

10

000

1110

ADCCTRL3

ADC Control 3

R/

W

10

000

1111

Reserved

Reserved

R/

W

10

Reserved

Table VI. DAC Control 1

Function

DAC Data-

Power-Down

Address

R/

W

W

W

W

W

RES

De-emphasis

DAC Data Format

Word Width

Reset

Sample Rate

15, 14, 13, 12

11

10

9, 8

7, 6, 5

4, 3

2

1, 0

0000

0

0

00 = None

000 = I

00 = 24 Bits

0 = Normal

00 = 48 kHz

01 = 44.1 kHz

001 = RJ

01 = 20 Bits

1 = Power-Down

01 = 96 kHz

10 = 32.0 kHz

010 = DSP

10 = 16 Bits

10 = 192 kHz

11 = 48.0 kHz

011 = LJ

11 = Reserved

11 = 48 kHz

100 = Packed 256

101 = Packed 128

110 = Reserved

111 = Reserved

Table VII. DAC Control 2

Function

Stereo

Address R/

W

W

W

W

W RES RES

Replicate

OUTR4

OUTL4

OUTR3

OUTL3

OUTR2

OUTL2

OUTR1

OUTL1

15, 14,

13, 12

11

10

9

8

7

6

543210

0001

0

0

0

0 = Off

0 = On

0 = On

0 = On

0 = On

0 = On

0 = On

0 = On

0 = On

1 = Replicate 1 = Mute 1 = Mute 1 = Mute 1 = Mute 1 = Mute 1 = Mute 1 = Mute 1 = Mute

MUTE DAC