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參數資料
| 型號： | AD1881AJST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 消費家電 |
| 英文描述： | AC’97 SoundMAX Codec |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | PLASTIC, LQFP-48 |
| 文件頁數： | 19/26頁 |
| 文件大?。?/td> | 261K |
| 代理商： | AD1881AJST |
AD1881A
–19–
REV. 0
Miscellaneous Control Bits (Index 76h)
u
u
u
u
N m
u
e
R g
e
m
a
N
1
D 5
1
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
D
6
7 h
s
B
l
n
o
C
c
s
M
r
A
D C
Z
I
M
P
L
X
X
A
D M
S
M
D
R
S
L
D
X
R
R
S
L
A
O
M D
EN
0
1
X
R
S
D7
8
X
R
S
D7
D
X
X
R
S
R
D
X
R
S
R
A
h
4
0
4
0
ARSR
ADC right sample generator select
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch).
DAC right sample generator select
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch).
Multiply SR1 rate by 8/7.
Multiply SR1 rate by 10/7. SRX10D7 and SRX8D7 are mutually exclusive; SRX10D7 has priority if both are set.
Modem filter enable (left channel only). Change only when DACs are powered down.
ADC left sample generator select
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch).
DAC left sample generator select
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch).
Digital Mono Select.
0 = Mixer
1 = Left DAC and Right DAC.
Digital Audio Mode. DAC Outputs bypass analog mixer and sent directly to the codec output.
Low Power Mixer. Keeps CD to LINE_OUT alive for notebook applications.
Zero fill (vs. repeat) if DAC is starved for data.
Sample Rate 0 (Index 78h)
DRSR
SRX8D7
SRX10D7
MODEN
ALSR
DLSR
DMS
DAM
LPMIX
DACZ
u
u
u
u
N m
u
e
R g
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
3
D
D2
D1
D0
t
u
a
f
D
8
7 h
0
0
e
a
e
a
R
e
p
m
a
S
5
1
0
R
S
4
1
0
R
S
3
1
0
R
S
2
1
0
R
S
1
1
0
R
S
0
1
0
R
S
9
0
R
S
8
0
R
S
7
0
R
S
6
0
R
S
5
0
R
S
4
0
R
S
3
0
R
S
2
0
R
S
1
0
R
S
0
0
R
S
H
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 48k.
SR0[15:0]
Writing to this register allows the user to program the sampling frequency from 7 kHz (1B58h) to 48 kHz (BB80h)
in 1 Hertz increments. Programming a value greater than 48 kHz or less than 7 kHz may cause unpredictable results.
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相關代理商/技術參數 |
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| AD1881AJSTZ | 制造商:Analog Devices 功能描述:IC AUDIO CODEC |
| AD1881AJSTZ-REEL | 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 16-Bit 48-Pin LQFP T/R |
| AD1881JST | 制造商:Analog Devices 功能描述:AC'97 SOUNDMAX CODEC 制造商:Analog Devices 功能描述:SOUNDCARD CIRCUITS, 48 Pin, Plastic, QFP |
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| AD1882A | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Definition Audio SoundMAX Codec |
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