參數(shù)資料
型號(hào)： AK4707
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： AV SCART Switch
中文描述： 影音SCART開關(guān)
文件頁(yè)數(shù)： 19/42頁(yè)
文件大小： 418K
代理商： AK4707
ASAHI KASEI
[AK4707]
MS0551-E-00
2006/10
- 19 -
2.
Audio Block
Switch Control
The AK4707 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
Table 3. TVOUT Switch Configuration
(01H: D5-D4)
VCR1
VCR0
Source of VCROUTL/R
0
0
0
1
1
0
1
1
Table 4. VCROUT Switch Configuration
Volume Control #0 (7-Level Volume)
The AK4707 has a 7-level volume control (Volume #0) as shown in Table 5. The volume reflects the change of register
value immediately.
Figure 4. Volume #0(Volume Gain=0dB:default), Full Differential Stereo Input
(02H: D5-D3)
L2
L1
L0
Volume #0 Gain
1
1
1
+12dB
1
1
0
+9dB
1
0
1
+6dB
1
0
0
+3dB
0
1
1
0dB
0
1
0
-3dB
0
0
1
-6dB
0
0
0
Mute
Table 5. Volume #0, Full Differential Stereo Input
AMP
VCRIN (default)
Mute
(Reserved)
AMP
TVIN (default)
Mute
(Reserved)
Output Level (Typ)
2Vrms (with 0.5Vrms differential input)
-
2Vrms (with 1Vrms differential input)
-
2Vrms (with 2Vrms differential input: default)
-
1Vrms (with 2Vrms differential input)
-
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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