REV. 0

AD1887

–9–

Reset (Index 00h)

g

e

Rg

e

R g

e

R g

e

Rg

e

R

m

u

Nm

u

N m

u

N m

u

Nm

u

N

e

m

a

Ne

m

a

N

e

m

a

N

e

m

a

Ne

m

a

N5

1

D5

1

D 5

1

D 5

1

D5

1

D4

1

D4

1

D 4

1

D 4

1

D4

1

D3

1

D3

1

D 3

1

D 3

1

D3

1

D2

1

D2

1

D 2

1

D 2

1

D2

1

D1

1

D1

1

D 1

1

D 1

1

D1

1

D0

1

D0

1

D 0

1

D 0

1

D0

1

D9

D9

D9

D9

D9

D8

D8

D8

D8

D8

D7

D7

D7

D7

D7

D6

D6

D6

D6

D6

D5

D5

D5

D5

D5

D4

D4

D4

D4

D4

D3

D3

D3

D3

D3

D2

D2

D2

D2

D2

D1

D1

D1

D1

D1

D0

D0

D0

D0

D0

Dt

l

u

a

f

e

Dt

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

Dt

l

u

a

f

e

D

h

0

0h

0

0 h

0

0 h

0

0h

0

0t

e

s

e

Rt

e

s

e

R

t

e

s

e

R

t

e

s

e

Rt

e

s

e

RX

X

X

X

X4

E

S4

E

S 4

E

S 4

E

S4

E

S3

E

S3

E

S 3

E

S 3

E

S3

E

S2

E

S2

E

S 2

E

S 2

E

S2

E

S1

E

S1

E

S 1

E

S 1

E

S1

E

S0

E

S0

E

S 0

E

S 0

E

S0

E

S9

D

I9

D

I 9

D

I 9

D

I9

D

I8

D

I8

D

I 8

D

I 8

D

I8

D

I7

D

I7

D

I 7

D

I 7

D

I7

D

I6

D

I6

D

I 6

D

I 6

D

I6

D

I5

D

I5

D

I 5

D

I 5

D

I5

D

I4

D

I4

D

I 4

D

I 4

D

I4

D

I3

D

I3

D

I 3

D

I 3

D

I3

D

I2

D

I2

D

I 2

D

I 2

D

I2

D

I1

D

I1

D

I 1

D

I 1

D

I1

D

I0

D

I0

D

I 0

D

I 0

D

I0

D

Ih

0

1

0

0h

0

1

0

0

h

0

1

0

0

h

0

1

0

0h

0

1

0

0

Note: Writing any value to this register performs a register reset, which causes all registers to revert to their default values (except

74h, which forces the serial configuration). Reading this register returns the ID code of the part and a code for the type of 3D Stereo

Enhancement.

ID[9:0]

Identify Capability. The ID decodes the capabilities of AD1887 based on the following:

Bit = 1

Function

ID0

Dedicated Mic PCM in Channel

0

ID1

Modem Line Codec Support

0

ID2

Bass and Treble Control

0

ID3

Simulated Stereo (Mono to Stereo)

0

ID4

Headphone Out Support

1

ID5

Loudness (Bass Boost) Support

0

ID6

18-Bit DAC Resolution

0

ID7

20-Bit DAC Resolution

0

ID8

18-Bit ADC Resolution

0

ID9

20-Bit ADC Resolution

0

*The AD1887 contains none of the optional features identified by these bits.

SE[4:0]

Stereo Enhancement. The 3D stereo enhancement identifies the Analog Devices 3D stereo enhancement.

Headphones Volume Registers (Index 04h)

g

e

Rg

e

R g

e

R g

e

Rg

e

R

m

u

Nm

u

N m

u

N m

u

Nm

u

N

e

m

a

Ne

m

a

N

e

m

a

N

e

m

a

Ne

m

a

N5

1

D5

1

D 5

1

D 5

1

D5

1

D4

1

D4

1

D 4

1

D 4

1

D4

1

D3

1

D3

1

D 3

1

D 3

1

D3

1

D2

1

D2

1

D 2

1

D 2

1

D2

1

D1

1

D1

1

D 1

1

D 1

1

D1

1

D0

1

D0

1

D 0

1

D 0

1

D0

1

D9

D9

D9

D9

D9

D8

D8

D8

D8

D8

D7

D7

D7

D7

D7

D6

D6

D6

D6

D6

D5

D5

D5

D5

D5

D4

D4

D4

D4

D4

D3

D3

D3

D3

D3

D2

D2

D2

D2

D2

D1

D1

D1

D1

D1

D0

D0

D0

D0

D0

Dt

l

u

a

f

e

Dt

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

Dt

l

u

a

f

e

D

h

4

0h

4

0 h

4

0 h

4

0h

4

0

s

e

n

o

h

p

d

a

e

Hs

e

n

o

h

p

d

a

e

H

s

e

n

o

h

p

d

a

e

H

s

e

n

o

h

p

d

a

e

Hs

e

n

o

h

p

d

a

e

H

e

m

u

l

o

Ve

m

u

l

o

V

e

m

u

l

o

V

e

m

u

l

o

Ve

m

u

l

o

V

M

P

HM

P

H M

P

H M

P

HM

P

HX

X

X

X

X5

V

H

L5

V

H

L

5

V

H

L

5

V

H

L5

V

H

L4

V

H

L4

V

H

L

4

V

H

L

4

V

H

L4

V

H

L3

V

H

L3

V

H

L

3

V

H

L

3

V

H

L3

V

H

L2

V

H

L2

V

H

L

2

V

H

L

2

V

H

L2

V

H

L1

V

H

L1

V

H

L

1

V

H

L

1

V

H

L1

V

H

L0

V

H

L0

V

H

L

0

V

H

L

0

V

H

L0

V

H

LX

X

X

X

XX

X

X

X

X5

V

H

R5

V

H

R

5

V

H

R

5

V

H

R5

V

H

R4

V

H

R4

V

H

R

4

V

H

R

4

V

H

R4

V

H

R3

V

H

R3

V

H

R

3

V

H

R

3

V

H

R3

V

H

R2

V

H

R2

V

H

R

2

V

H

R

2

V

H

R2

V

H

R1

V

H

R1

V

H

R

1

V

H

R

1

V

H

R1

V

H

R0

V

H

R0

V

H

R

0

V

H

R

0

V

H

R0

V

H

Rh

0

0

0

8h

0

0

0

8

h

0

0

0

8

h

0

0

0

8h

0

0

0

8

RHV[5:0]

Right Headphone Volume Control. The least significant bit represents 1.5 dB. This register controls the output

from +6 dB to a maximum attenuation of –88.5 dB.

LHV[5:0]

Left Headphone Volume Control. The least significant bit represents 1.5 dB. This register controls the output

from +6 dB to a maximum attenuation of –88.5 dB.

HPM

Headphones Volume Mute. When this bit is set to “1,” the channel is muted.

HPM

xHV5 . . . xHV0

Function

0

00 0000

6 dB Gain

0

01 1111

–40.5 dB Attenuation

0

11 1111

–88.5 dB Attenuation

1

xx xxxx

–

∞ dB Attenuation