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參數(shù)資料
| 型號： | ALC202 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:100; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:22; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:22-35 RoHS Compliant: No |
| 中文描述： | AC\u0026#39;97音頻編解碼器 |
| 文件頁數(shù)： | 26/29頁 |
| 文件大?。?/td> | 598K |
| 代理商： | ALC202 |
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Preliminary
Avance Logic, Inc.
ALC202
-
26 -
Rev0.62
http://www.realtek.com.tw
6.2.8 AC-Link IO Pin Capacitance and Loading:
Output Pin
BIT_CLK (must support
≥
2 Codecs)
SDATA_IN
1 Codec
55pF
47.5pF
2 Codec
62.5pF
55pF
3 Codec
75pF
60pF
4 Codec
85pF
62.5pF
6.2.9 SPDIF output:
SPDIF_OUT
Rise time/fall time
Duty cycle
Min
0
45
Typ
Max
10
55
Unit
%
%
Note :
T
(h)
T
(l)
T
(r)
T
(f)
90%
50%
10%
Rise time = 100 * T
(r)
/ (T
(l)
+ T
(h)
)%
Fall time = 100 * T
(f)
/ (T
(l)
+ T
(h)
)%
Duty cycle = 100 * T
(h)
/ (T
(l)
+ T
(h)
)%
6.2.10 BIT-CLK and SDATA-IN state when RESET# is active:
When RESET# is active the BIT-CLK and SDATA-IN must be floating by internal pull low 100K
resistors. So the ac-link signals are driven by another AC’97 on CNR board. This requirement is not
mentioned in AC’97 specification rev2.1, please refer CNR (Communication Network Riser)
specification rev1.0 page23~25 to get detail information.
7. Analog Performance Characteristics
Standard test conditions: T
ambient
=25
0
C, Dvdd=3.3V
±
5%,Avdd=5.0V
±
5%
1KHz input sine wave; Sampling frequency=48KHz; 0dB=1Vrms
10K
/50pF load
; Test bench Characterization BW: 10Hz~22KHz
0dB attenuation; tone and 3D disabled
Parameter
Full scale input voltage
Line inputs (Mixers)
Line inputs (A/D)
Mic input (0 dB)
Mic input (20 dB boost)
Full scale output voltage
LINE-OUT
HEADPHONE-OUT
Min
Typ
Max
Units
-
-
-
-
1.6
1.2
1.6
0.16
-
-
-
-
Vrms
-
-
1.0
1.7
1.50
-
Vrms
Vrms
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