參數資料
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: 15/16頁
文件大?。?/td> 150K
代理商: AD1887
REV. 0
AD1887
–15–
Sample Rate 0 (Index 78h)
u
u
u
u
N m
u
e
R g
e
m
a
N
D1
D 5
D1
D 4
1
D1
D 3
D1
D 2
D1
D 1
D1
D 0
D9
D8
D7
D6
D5
D4
3
D
D2
D1
D0
t
u
a
f
D
D
h
8
7
h
2
3
(
e
p
0
m
e
a
a
S
R
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
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.
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.
Sample Rate 1 (Index 7Ah)
u
u
u
u
N m
u
e
R g
e
m
a
N
D1
D 5
D1
D 4
D1
D 3
D1
D 2
D 1
D1
D 0
D9
D8
D7
D6
D5
D4
3
D
D2
D1
D0
t
u
u
a
f
D
D
h
A
7
h
C
2
(
e
p
1
m
e
a
a
S
R
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
1
R
S
8
1
R
S
7
1
R
S
6
1
R
S
5
1
R
S
4
1
R
S
3
1
R
S
2
1
R
S
1
1
R
S
0
1
R
S
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.
SR1[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.
Vendor ID Registers (Index 7Ch–7Eh)
u
e
R g
R
N m
e
m
a
N
1
1
D 5
1
D 4
1
D 3
1
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
C
7
1
D
I
r
o
d
n
e
V
F7
F6
F5
F4
F3
F2
F1
F0
S7
S6
S5
S4
S3
S2
S1
S0
h
4
4
1
4
S[7:0]
F[7:0]
This register is ASCII encoded to ‘A.’
This register is ASCII encoded to ‘D.’
u
u
u
u
N m
u
e
R g
e
m
a
N
1
D 5
1
D 4
1
D 3
1
1
D 2
D 1
1
D 0
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
u
t
a
f
D
E
7 h
2
D
I
r
o
d
n
e
V
T7
T6
T5
T4
T3
T2
T1
T0
7
V
E
R
E
E
R V
6
E
R V
5
E
R V
4
E
E
R V
3
E
R V
2
E
R V
1
E
E
R V
0
h
2
6
3
5
T[7:0]
This register is ASCII encoded to ‘S.’
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