參數(shù)資料
型號(hào): AK4704
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 2ch 24bit DAC with AV SCART switch
中文描述: 2通道24位DAC,具有影音SCART開(kāi)關(guān)
文件頁(yè)數(shù): 21/44頁(yè)
文件大?。?/td> 440K
代理商: AK4704
ASAHI KASEI
AKM CONFIDENTIAL
[AK4704]
Rev. 0.5
2004/1
- 21 -
Volume/Switch Control
The AK4704 has analog volume controls and switch matrixes designed primarily for SCART routing. Those are
controlled via the control register as shown in, Table 6, Table 8, Table 10 and Table 11 (Please refer to the block diagram
in figure 1).
(03H: D4-D3)
DVOL1
DVOL0
Volume #0 Gain
0
0
0dB
0
1
-6dB
1
0
+2.44dB
2.65Vrms (with 0dBFS input & volume #1=0dB.)
2Vrms (with –10dBFS input & volume #1=+6dB.
Output Level
2Vrms (with 0dBFS input & volume #1=0dB.)
1Vrms (with 0dBFS input & volume #1=0dB.)
1
1
+4dB
Clips over –2.5dBFS digital input.)
Table 6. Volume #0 (at DAPD bit =”0”. DAC mode)
(03H: D4-D3)
DVOL1
DVOL0
0
1
0
1
Volume #2 Gain
+6dB
0dB
(reserved)
(reserved)
Output Level
0
0
1
1
2Vrms (with 1Vrms input & volume #1=0dB.)
1Vrms (with 1Vrms input & volume #1=0dB.)
-
-
Table 7. Volume #2 (at DAPD bit =”1”. analog input mode.)
(02H: D5-D0)
L5
1
1
1
0
0
0
L4
0
0
0
1
0
0
L3
0
0
0
1
0
0
L2
0
0
0
1
0
0
L1
1
0
0
1
0
0
L0
0
1
0
1
1
0
Gain
+6dB
+4dB
+2dB
0dB (default)
-60dB
Mute
Note: Do not exceed 3Vrms at analog output.
Table 8. Volume #1 (Analog Volume)
(01H: D1-D0)
TV1
0
0
1
1
TV0
0
1
0
1
Source of TVOUTL/R
DAC
VCRIN (default)
Mute
(Reserved)
Table 9. TVOUT Switch Configuration
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