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參數(shù)資料
| 型號(hào)： | AK4708EQ |
| 廠(chǎng)商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | AV SCART Switch with Two RGB Outputs |
| 中文描述： | 影音SCART開(kāi)關(guān)與兩個(gè)RGB輸出 |
| 文件頁(yè)數(shù)： | 19/46頁(yè) |
| 文件大?。?/td> | 504K |
| 代理商： | AK4708EQ |
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[AK4708]
MS0618-E-00
2007/04
- 19 -
2.
Audio Block
■
Switch Control
The AK4708 has switch matrixes designed primarily for SCART routing. Those are controlled via the control register as
shown in, Table 3 and Table 4 (Please refer to the Block Diagram).
(01H: D1-D0)
TV1
TV0
Source of TVOUTL/R
0
0
0
1
1
0
1
1
(Reserved)
Table 3. TVOUT Switch Configuration
(01H: D5-D4)
VCR1
VCR0
Source of VCROUTL/R
0
0
0
1
1
0
1
1
Volume#1 output
Table 4. VCROUT Switch Configuration
■
Volume Control #0 (7-Level Volume)
The AK4708 has a 7-level volume control (Volume #0) as shown in Table 5. The volume reflects the change of register
value immediately.
Figure 6. Volume #0(Volume Gain=0dB:default), Full Differential Stereo Input
(0DH: D5-D3)
VOL
0
1
1
1
+12dB
2Vrms (with 0.5Vrms differential input)
1
1
0
+9dB
1
0
1
+6dB
2Vrms (with 1Vrms differential input)
1
0
0
+3dB
0
1
1
0dB
2Vrms (with 2Vrms differential input)
0
1
0
-3dB
0
0
1
-6dB
1Vrms (with 2Vrms differential input)
0
0
0
Mute
Note: Volume #1=0dB
Table 5. Volume #0, Full Differential Stereo Input
AMP
VCRIN
Mute
(default)
AMP
TVIN
Mute
(default)
VOL2
VOL1
Volume #0 Gain
Output Level (Typ)
-
-
(default)
-
-
2Vrms differential
input
TVOUTL/R
(VCROUTL/R)
AINL/R+
AINL/R-
Volume Gain 0dB
Volume #0
1Vrms
1Vrms
2Vrms
0.47
μ
0.47
μ
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