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參數(shù)資料
| 型號： | AD1887 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | Codec |
| 英文描述： | AC’97 SoundMAX Codec |
| 中文描述： | AC\u0026#39;97聲卡SoundMAX編解碼器 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 150K |
| 代理商： | AD1887 |
REV. 0
AD1887
–13–
Extended Audio ID Register (Index 28h)
u
e
R g
N m
e
m
a
N
D1
D 5
D1
D 4
D1
D 3
D1
D 2
D1
D 1
D1
D 0
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
t
u
a
f
e
D
28
2 h
D
I
o
i
d
u
A
d
d
e
d
n
e
t
x
E
1
1
D
D
I
I
0
0
D
D
I
I
X
X
X
X
X
X
X
X
X
X
X
X
X
VR
V A
h
1
0
0
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)
u
e
R g
N m
e
m
a
a
N
1
D 5
1
D 4
1
D 3
1
D 2
D 1
1
D 0
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
t
u
a
f
e
D
h
A
2
C
l
a
/
a
t
S
o
i
d
u
A
d
'
x
E
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R
V A
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)
u
e
e
R g
N m
e
m
a
N
1
D 5
1
D 4
1
D 3
1
D 2
D 1
1
D 0
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
t
u
a
f
e
D
)
h
A
7
(
h
C
2
e
t
a
R
R
C
A
A
D
M
C
P
5
5
1
R
S
4
1
R
S
3
1
1
R
S
2
1
R
S
1
1
R
R
S
0
0
1
R
S
R
S 9
R
S 8
R
S 7
R
S 6
R
R
S 5
R
S 4
3
R
S 3
R
S 2
R
S 1
R
R
S 0
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)
u
e
R g
N m
e
m
m
a
N
1
D 5
1
D 4
1
D 3
1
D 2
D 1
1
D 0
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
t
t
u
a
f
f
e
D
)
h
h
8
8
7
(
h
h
2
2
3
3
e
t
t
a
a
R
C
D
D
A
M
C
P
5
1
1
R
S
4
1
1
R
S
3
1
1
R
S
2
1
1
R
S
1
1
1
R
S
0
1
1
R
S
9
R
S 9
SR
S 8
SR
S 7
R
SR
S 6
SR
S 5
4
R
S 4
SR
S 3
SR
S 2
R
SR
S 1
SR
S 0
h
0
8
B
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.
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相關代理商/技術參數(shù) |
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| AD1887JST | 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 16-Bit 48-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:AC97 VERSION 2.1 CODEC/RDC'D ANALOG MIXE - Bulk |
| AD1887JST-REEL | 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 16-Bit 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:AC97 VERSION 2.1 CODEC S/PDIF OUT - Tape and Reel |
| AD1887JSTZ | 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 16-Bit 48-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD1887JSTZ-REEL | 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 16-Bit 48-Pin LQFP T/R |
| AD1888 | 制造商:AD 制造商全稱:Analog Devices 功能描述:AC 97 SoundMAX Codec |
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