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REV. 0

AD1887

–13–

Extended Audio ID Register (Index 28h)

g

e

R g

e

R g

e

R g

e

R g

e

R

m

u

N m

u

N m

u

N m

u

N m

u

N

e

m

a

N

e

m

a

N

e

m

a

N

e

m

a

N

e

m

a

N

5

1

D 5

1

D 5

1

D 5

1

D 5

1

D

4

1

D 4

1

D 4

1

D 4

1

D 4

1

D

3

1

D 3

1

D 3

1

D 3

1

D 3

1

D

2

1

D 2

1

D 2

1

D 2

1

D 2

1

D

1

1

D 1

1

D 1

1

D 1

1

D 1

1

D

0

1

D 0

1

D 0

1

D 0

1

D 0

1

D

9

D9

D9

D9

D 9

D

8

D8

D8

D8

D 8

D

7

D7

D7

D7

D 7

D

6

D6

D6

D6

D 6

D

5

D5

D5

D5

D 5

D

4

D4

D4

D4

D 4

D

3

D3

D3

D3

D 3

D

2

D2

D2

D2

D 2

D

1

D1

D1

D1

D 1

D

0

D0

D0

D0

D 0

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

h

8

2 h

8

2 h

8

2 h

8

2 h

8

2

D

I

o

i

d

u

A

d

e

d

n

e

t

x

E

D

I

o

i

d

u

A

d

e

d

n

e

t

x

E

D

I

o

i

d

u

A

d

e

d

n

e

t

x

E

D

I

o

i

d

u

A

d

e

d

n

e

t

x

E

D

I

o

i

d

u

A

d

e

d

n

e

t

x

E

1

D

I

1

D

I

1

D

I

1

D

I

1

D

I

0

D

I

0

D

I

0

D

I

0

D

I

0

D

I

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

A

R

V A

R

V

A

R

V

A

R

V

A

R

V

h

1

0

0

0

h

1

0

0

0

h

1

0

0

0

h

1

0

0

0

h

1

0

0

0

Note: The Extended Audio ID is a read only register.

VRA

Variable Rate Audio. VRA = 1 indicates support for Variable Rate Audio.

ID[1:0]

ID1, ID0 is a 2-bit field which indicates the codec configuration: Primary is 00; Secondary is 01, 10, or 11.

Extended Audio Status and Control Register (Index 2Ah)

g

e

R g

e

R g

e

R g

e

R g

e

R

m

u

N m

u

N m

u

N m

u

N m

u

N

e

m

a

N

e

m

a

N

e

m

a

N

e

m

a

N

e

m

a

N

5

1

D 5

1

D 5

1

D 5

1

D 5

1

D

4

1

D 4

1

D 4

1

D 4

1

D 4

1

D

3

1

D 3

1

D 3

1

D 3

1

D 3

1

D

2

1

D 2

1

D 2

1

D 2

1

D 2

1

D

1

1

D 1

1

D 1

1

D 1

1

D 1

1

D

0

1

D 0

1

D 0

1

D 0

1

D 0

1

D

9

D9

D9

D9

D 9

D

8

D8

D8

D8

D 8

D

7

D7

D7

D7

D 7

D

6

D6

D6

D6

D 6

D

5

D5

D5

D5

D 5

D

4

D4

D4

D4

D 4

D

3

D3

D3

D3

D 3

D

2

D2

D2

D2

D 2

D

1

D1

D1

D1

D 1

D

0

D0

D0

D0

D 0

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

h

A

2

h

A

2

h

A

2

h

A

2

h

A

2

l

r

t

C

/

t

a

t

S

o

i

d

u

A

d

'

t

x

E

l

r

t

C

/

t

a

t

S

o

i

d

u

A

d

'

t

x

E

l

r

t

C

/

t

a

t

S

o

i

d

u

A

d

'

t

x

E

l

r

t

C

/

t

a

t

S

o

i

d

u

A

d

'

t

x

E

l

r

t

C

/

t

a

t

S

o

i

d

u

A

d

'

t

x

E

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

A

R

V A

R

V

A

R

V

A

R

V

A

R

V

h

0

0

0

0

h

0

0

0

0

h

0

0

0

0

h

0

0

0

0

h

0

0

0

0

Note: The Extended Audio Status and Control Register is a read/write register that provides status and control of the extended audio
features.

VRA

Variable Rate Audio. VRA = 1 indicates support for Variable Rate Audio mode (sample rate control registers and
SLOTREQ signaling).

PCM DAC Rate Register (Index 2Ch)

g

e

R g

e

R g

e

R g

e

R g

e

R

m

u

N m

u

N m

u

N m

u

N m

u

N

e

m

a

N

e

m

a

N

e

m

a

N

e

m

a

N

e

m

a

N

5

1

D 5

1

D 5

1

D 5

1

D 5

1

D

4

1

D 4

1

D 4

1

D 4

1

D 4

1

D

3

1

D 3

1

D 3

1

D 3

1

D 3

1

D

2

1

D 2

1

D 2

1

D 2

1

D 2

1

D

1

1

D 1

1

D 1

1

D 1

1

D 1

1

D

0

1

D 0

1

D 0

1

D 0

1

D 0

1

D

9

D9

D9

D9

D 9

D

8

D8

D8

D8

D 8

D

7

D7

D7

D7

D 7

D

6

D6

D6

D6

D 6

D

5

D5

D5

D5

D 5

D

4

D4

D4

D4

D 4

D

3

D3

D3

D3

D 3

D

2

D2

D2

D2

D 2

D

1

D1

D1

D1

D 1

D

0

D0

D0

D0

D 0

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

)

h

A

7

(

/

h

C

2

)

h

A

7

(

/

h

C

2

)

h

A

7

(

/

h

C

2

)

h

A

7

(

/

h

C

2

)

h

A

7

(

/

h

C

2

e

t

a

R

C

A

D

M

C

P

e

t

a

R

C

A

D

M

C

P

e

t

a

R

C

A

D

M

C

P

e

t

a

R

C

A

D

M

C

P

e

t

a

R

C

A

D

M

C

P

5

1

R

S

5

1

R

S

5

1

R

S

5

1

R

S

5

1

R

S

4

1

R

S

4

1

R

S

4

1

R

S

4

1

R

S

4

1

R

S

3

1

R

S

3

1

R

S

3

1

R

S

3

1

R

S

3

1

R

S

2

1

R

S

2

1

R

S

2

1

R

S

2

1

R

S

2

1

R

S

1

1

R

S

1

1

R

S

1

1

R

S

1

1

R

S

1

1

R

S

0

1

R

S

0

1

R

S

0

1

R

S

0

1

R

S

0

1

R

S

9

R

S 9

R

S

9

R

S

9

R

S

9

R

S

8

R

S 8

R

S

8

R

S

8

R

S

8

R

S

7

R

S 7

R

S

7

R

S

7

R

S

7

R

S

6

R

S 6

R

S

6

R

S

6

R

S

6

R

S

5

R

S 5

R

S

5

R

S

5

R

S

5

R

S

4

R

S 4

R

S

4

R

S

4

R

S

4

R

S

3

R

S 3

R

S

3

R

S

3

R

S

3

R

S

2

R

S 2

R

S

2

R

S

2

R

S

2

R

S

1

R

S 1

R

S

1

R

S

1

R

S

1

R

S

0

R

S 0

R

S

0

R

S

0

R

S

0

R

S

h

0

8

B

B

h

0

8

B

B

h

0

8

B

B

h

0

8

B

B

h

0

8

B

B

Note: 2Ch is an alias for 7Ah. The VRA bit in register 2Ah must be set for the alias to work; if a zero is written to VRA then both
sample rates are reset to 48 kHz.

SR[15:0]

Writing to this register allows programming of the sampling frequency from 7 kHz (1B58h) to 48 kHz (BB80h) in
1 Hz increments. Programming a value outside of the range 7040 Hz (1b80h) to 48000 Hz (bb80h) causes the
codec to saturate. For all rates, if the value written to the register is supported that value will be echoed back when
read, otherwise the closest rate supported is returned.

PCM ADC Rate Register (Index 32h)

g

e

R g

e

R g

e

R g

e

R g

e

R

m

u

N m

u

N m

u

N m

u

N m

u

N

e

m

a

N

e

m

a

N

e

m

a

N

e

m

a

N

e

m

a

N

5

1

D 5

1

D 5

1

D 5

1

D 5

1

D

4

1

D 4

1

D 4

1

D 4

1

D 4

1

D

3

1

D 3

1

D 3

1

D 3

1

D 3

1

D

2

1

D 2

1

D 2

1

D 2

1

D 2

1

D

1

1

D 1

1

D 1

1

D 1

1

D 1

1

D

0

1

D 0

1

D 0

1

D 0

1

D 0

1

D

9

D9

D9

D9

D 9

D

8

D8

D8

D8

D 8

D

7

D7

D7

D7

D 7

D

6

D6

D6

D6

D 6

D

5

D5

D5

D5

D 5

D

4

D4

D4

D4

D 4

D

3

D3

D3

D3

D 3

D

2

D2

D2

D2

D 2

D

1

D1

D1

D1

D 1

D

0

D0

D0

D0

D 0

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

t

l

u

a

f

e

D

)

h

8

7

(

/

h

2

3

)

h

8

7

(

/

h

2

3

)

h

8

7

(

/

h

2

3

)

h

8

7

(

/

h

2

3

)

h

8

7

(

/

h

2

3

e

t

a

R

C

D

A

M

C

P

e

t

a

R

C

D

A

M

C

P

e

t

a

R

C

D

A

M

C

P

e

t

a

R

C

D

A

M

C

P

e

t

a

R

C

D

A

M

C

P

5

1

R

S

5

1

R

S

5

1

R

S

5

1

R

S

5

1

R

S

4

1

R

S

4

1

R

S

4

1

R

S

4

1

R

S

4

1

R

S

3

1

R

S

3

1

R

S

3

1

R

S

3

1

R

S

3

1

R

S

2

1

R

S

2

1

R

S

2

1

R

S

2

1

R

S

2

1

R

S

1

1

R

S

1

1

R

S

1

1

R

S

1

1

R

S

1

1

R

S

0

1

R

S

0

1

R

S

0

1

R

S

0

1

R

S

0

1

R

S

9

R

S 9

R

S

9

R

S

9

R

S

9

R

S

8

R

S 8

R

S

8

R

S

8

R

S

8

R

S

7

R

S 7

R

S

7

R

S

7

R

S

7

R

S

6

R

S 6

R

S

6

R

S

6

R

S

6

R

S

5

R

S 5

R

S

5

R

S

5

R

S

5

R

S

4

R

S 4

R

S

4

R

S

4

R

S

4

R

S

3

R

S 3

R

S

3

R

S

3

R

S

3

R

S

2

R

S 2

R

S

2

R

S

2

R

S

2

R

S

1

R

S 1

R

S

1

R

S

1

R

S

1

R

S

0

R

S 0

R

S

0

R

S

0

R

S

0

R

S

h

0

8

B

B

h

0

8

B

B

h

0

8

B

B

h

0

8

B

B

h

0

8

B

B

Note: 32h is an alias for 78h. The VRA bit in register 2Ah must be set for the alias to work; if a zero is written to VRA then both
sample rates are reset to 48 kHz.

SR[15:0]

Writing to this register allows programming of the sampling frequency from 7 kHz (1B58h) to 48 kHz (BB80h) in
1 Hz increments. Programming a value outside of the range 7040 Hz (1b80h) to 48000 Hz (bb80h) causes the
codec to saturate. For all rates, if the value written to the register is supported that value will be echoed back when
read, otherwise the closest rate supported is returned.

Содержание AD1887

Страница 1: ... Bit Headphone Volume Control Digital Audio Mixer Mode AC 97 2 1 FEATURES Variable Sample Rate Audio AC 97 FEATURES AC 97 2 2 Compliant Greater than 90 dB Dynamic Range Integrated Stereo Headphone Amplifier Multibit Converter Architecture for Improved S N Ratio Greater than 90 dB 16 Bit Stereo Full Duplex Codec Two Analog Line Level Stereo Inputs for LINE IN and CD Mono MIC Input with Built In Pro...

Страница 2: ...to HP_OUT 90 dB Other to HP_OUT 90 dB Step Size 12 dB to 34 5 dB All Steps Tested MIC LINE_IN CD DAC 1 5 dB Input Gain Attenuation Range MIC LINE_IN CD DAC 46 5 dB DIGITAL DECIMATION AND INTERPOLATION FILTERS Parameter Min Typ Max Unit Pass Band 0 0 4 fS Hz Pass Band Ripple 0 09 dB Transition Band 0 4 fS 0 6 fS Hz Stop Band 0 6 fS Hz Stop Band Rejection 74 dB Group Delay 12 fS sec Group Delay Vari...

Страница 3: ...UT Input R Zero L 80 dB Measure L_OUT Total Audible Out of Band Energy Measured from 0 6 fS to 20 kHz 40 dB ANALOG OUTPUT Parameter Min Typ Max Unit Full Scale Output Voltage HP_OUT 1 V rms 2 83 V p p Output Impedance 800 Ω External Load Impedance 32 Ω Output Capacitance 15 pF External Load Capacitance 100 pF VREF 2 05 2 25 2 45 V VREF_OUT 2 25 V VREF_OUT Current Drive 5 mA Mute Click Muted Output...

Страница 4: ...idth tSYNC_HIGH 1 3 µs SYNC Low Pulsewidth tSYNC_LOW 19 5 µs SYNC Inactive to BIT_CLK Startup Delay tSYNC2CLK 162 8 ns BIT_CLK Frequency 12 288 MHz BIT_CLK Period tCLK_PERIOD 81 4 ns BIT_CLK Output Jitter 750 ps BIT_CLK High Pulsewidth tCLK_HIGH 32 56 42 48 84 ns BIT_CLK Low Pulsewidth tCLK_LOW 32 56 38 48 84 ns SYNC Frequency 48 0 kHz SYNC Period tSYNC_PERIOD 20 8 µs Setup to Falling Edge of BIT_...

Страница 5: ...SYNC tHOLD SDATA_OUT tSETUP Figure 4 Data Setup and Hold BIT_CLK SYNC SDATA_IN tRISECLK tRISESYNC tRISEDIN tRISEDOUT tFALLCLK tFALLSYNC tFALLDIN tFALLDOUT SDATA_OUT Figure 5 Signal Rise and Fall Time BIT_CLK SDATA_OUT SYNC SDATA_IN SLOT 1 SLOT 2 WRITE TO 0x26 DATA PR4 DON T CARE tS2_PDOWN NOTE BIT_CLK NOTTO SCALE Figure 6 AC Link Low Power Mode Timing RESET SDATA_OUT HI Z tSETUP2RST tOFF SDATA_IN ...

Страница 6: ...al operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied Exposure to absolute maximum rating conditions for extended periods may affect device reliability ORDERING GUIDE Temperature Package Package Model Range Description Option AD1887JST 0 C to 70 C Thin Quad Flatpack ST 48 ENVIRONMENTAL CONDITIONS Ambient Te...

Страница 7: ...ferential CD Input CD_ R 20 I CD Audio Right Channel MIC 21 I Microphone Input LINE_IN_L 23 I Line in Left Channel LINE_IN_R 24 I Line in Right Channel HP_OUT_L 39 O Headphones Out Left Channel HP_OUT_R 41 O Headphones Out Right Channel Filter Reference These signals are connected to resistors capacitors or specific voltages Pin Name TQFP I O Description VREF 27 O Voltage Reference Filter VREFOUT ...

Страница 8: ... X X X RS2 RS1 RS0 0000h 1Ch Record Gain IM X X X LIM3 LIM2 LIM1 LIM0 X X X X RIM3 RIM2 RIM1 RIM0 8000h 20h General Purpose X X X X X X X X LPBK X X X X X X X 0000h 26h Power Down Ctrl Stat X X PR5 PR4 PR3 PR2 PR1 PR0 X X X X REF ANL DAC ADC 000Xh 28h Ext d Audio ID ID1 ID0 X X X X X X X X X X X X X VRA 0005h 2Ah Ext d Audio Stat Ctrl X X X X X X X X X X X X X X X VRA 0000h 2Ch PCM DAC Rate SR1 SR...

Страница 9: ...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 R g e R g e R g e R g e R m u N m u N m u N m u N m u N e m a N e m a N e m a N e m a N e m a N 5 1 D 5 1 D 5 1 D 5 1 D 5 1 D 4 1 D 4 1 D 4 1 D 4 1 D 4 1 D 3 1 D 3 1 D 3 1 D 3 1 D...

Страница 10: ... L 1 V L L 1 V L L 1 V L L 1 V L L 1 V L L 0 V L L 0 V L L 0 V L L 0 V L L 0 V L L X X X X X X X X X X X X X X X 4 V L R 4 V L R 4 V L R 4 V L R 4 V L R 3 V L R 3 V L R 3 V L R 3 V L R 3 V L R 2 V L R 2 V L R 2 V L R 2 V L R 2 V L R 1 V L R 1 V L R 1 V L R 1 V L R 1 V L R 0 V L R 0 V L R 0 V L R 0 V L R 0 V L R h 8 0 8 8 h 8 0 8 8 h 8 0 8 8 h 8 0 8 8 h 8 0 8 8 RLV 4 0 Right Line In Volume Allows s...

Страница 11: ...D3 D3 D 2 D2 D2 D2 D2 D 1 D1 D1 D1 D1 D 0 D0 D0 D0 D0 D t l u a f e D t l u a f e D t l u a f e D t l u a f e D t l u a f e D h A 1 h A 1 h A 1 h A 1 h A 1 t c e l e S d r o c e R t c e l e S d r o c e R t c e l e S d r o c e R t c e l e S d r o c e R t c e l e S d r o c e R X X X X X X X X X X X X X X X X X X X X X X X X X 2 S L 2 S L 2 S L 2 S L 2 S L 1 S L 1 S L 1 S L 1 S L 1 S L 0 S L 0 S L 0 ...

Страница 12: ... n w o D r e w o P X X X X X 6 R P 6 R P 6 R P 6 R P 6 R P 5 R P 5 R P 5 R P 5 R P 5 R P 4 R P 4 R P 4 R P 4 R P 4 R P 3 R P 3 R P 3 R P 3 R P 3 R P 2 R P 2 R P 2 R P 2 R P 2 R P 1 R P 1 R P 1 R P 1 R P 1 R P 0 R P 0 R P 0 R P 0 R P 0 R P X X X X X X X X X X X X X X X X X X X X F E R F E R F E R F E R F E R L N A L N A L N A L N A L N A C A D C A D C A D C A D C A D C D A C D A C D A C D A C D A A...

Страница 13: ...D t l u a f e D t l u a f e D t l u a f e D t l u a f e D h A 7 h C 2 h A 7 h C 2 h A 7 h C 2 h A 7 h C 2 h A 7 h C 2 e t a R C A D M C P e t a R C A D M C P e t a R C A D M C P e t a R C A D M C P e t a R C A D M C P 5 1 R S 5 1 R S 5 1 R S 5 1 R S 5 1 R S 4 1 R S 4 1 R S 4 1 R S 4 1 R S 4 1 R S 3 1 R S 3 1 R S 3 1 R S 3 1 R S 3 1 R S 2 1 R S 2 1 R S 2 1 R S 2 1 R S 2 1 R S 1 1 R S 1 1 R S 1 1 R ...

Страница 14: ... 1 D 5 1 D 4 1 D 4 1 D 4 1 D 4 1 D 4 1 D 3 1 D 3 1 D 3 1 D 3 1 D 3 1 D 2 1 D 2 1 D 2 1 D 2 1 D 2 1 D 1 1 D 1 1 D 1 1 D 1 1 D 1 1 D 0 1 D 0 1 D 0 1 D 0 1 D 0 1 D 9 D9 D9 D9 D9 D 8 D8 D8 D8 D8 D 7 D7 D7 D7 D7 D 6 D6 D6 D6 D6 D 5 D5 D5 D5 D5 D 4 D4 D4 D4 D4 D 3 D3 D3 D3 D3 D 2 D2 D2 D2 D2 D 1 D1 D1 D1 D1 D 0 D0 D0 D0 D0 D t l u a f e D t l u a f e D t l u a f e D t l u a f e D t l u a f e D h 6 7 h 6...

Страница 15: ... R S 9 1 R S 9 1 R S 9 1 R S 8 1 R S 8 1 R S 8 1 R S 8 1 R S 8 1 R S 7 1 R S 7 1 R S 7 1 R S 7 1 R S 7 1 R S 6 1 R S 6 1 R S 6 1 R S 6 1 R S 6 1 R S 5 1 R S 5 1 R S 5 1 R S 5 1 R S 5 1 R S 4 1 R S 4 1 R S 4 1 R S 4 1 R S 4 1 R S 3 1 R S 2 1 R S 2 1 R S 2 1 R S 2 1 R S 2 1 R S 1 1 R S 1 1 R S 1 1 R S 1 1 R S 1 1 R S 0 1 R S 0 1 R S 0 1 R S 0 1 R S 0 1 R S h 0 8 B B h 0 8 B B h 0 8 B B h 0 8 B B h 0...

Страница 16: ...ead Thin Plastic Quad Flatpack LQFP ST 48 TOP VIEW PINS DOWN 1 12 13 25 24 36 37 48 0 019 0 5 BSC 0 276 7 00 BSC SQ 0 011 0 27 0 006 0 17 0 354 9 00 BSC SQ 0 063 1 60 MAX 0 030 0 75 0 018 0 45 0 008 0 2 0 004 0 09 0ⴗ MIN COPLANARITY 0 003 0 08 SEATING PLANE 0 006 0 15 0 002 0 05 7ⴗ 0ⴗ 0 057 1 45 0 053 1 35 ...

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