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參數資料
| 型號： | AK4706 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 2ch 24bit DAC with AV Switch & HD/SD Video Filter |
| 中文描述： | 2通道24位DAC，帶有AV系列開關 |
| 文件頁數： | 28/53頁 |
| 文件大?。?/td> | 597K |
| 代理商： | AK4706 |
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ASAHI KASEI
[AK4706]
MS0507-E-00
2006/05
- 28 -
Volume Control #1 (Main Volume)
The AK4706 has main volume control (Volume #1) as shown in Table 12.
(02H: D5-D0)
L5
L4
1
0
1
0
1
0
0
1
…
…
0
0
0
0
Note: The output must not exceed 3Vrms.
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
Table 12. Volume #1
When the MOD bit = “1”(default), changing levels don’t have pop noise. MDT1-0 bits select the transition time (see
Table 13). When the new gain value 1EH(-2dB) is written to gain resistor while the actual (stable) gain is 1FH(0dB), the
gain changes to 1EH(-2dB) within the transition time selected by MDT1-0 bits. The AK4706 compares the actual gain to
the value of gain register after finishing the transition time, and re-changes the actual gain to new resister value within the
transition time if the register value is different from the actual gain when compared. When the MOD bit = “0” then there
is no transition time and the gain changes immediately. This change may cause a click noise.
[Gain=1EH]
[Gain=1DH]
Actual Gain
Gain Register
Transition Time (256/fs to 2048/fs. pop free.)
1FH
1EH
1DH
1EH
1FH
1DH
WR
WR
[Gain=1CH]
WR
1CH
1CH
compare
compare compare
(to 1EH)
(to 1DH)
(to 1CH)
Figure 7. Volume Change Operation (MOD bit = “1”)
MDT1
0
0
1
1
MDT0
0
1
0
1
Table 13. Volume Transition Time
Transition Time
256/fs
512/fs
1024/fs
2048/fs (default)
相關PDF資料 |
PDF描述 |
|---|---|
| AK4706VQ | 2ch 24bit DAC with AV Switch & HD/SD Video Filter |
| AK4707 | AV SCART Switch |
| AK4707EQ | AV SCART Switch |
| AK4708 | AV SCART Switch with Two RGB Outputs |
| AK4708EQ | AV SCART Switch with Two RGB Outputs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AK4706_10 | 制造商:AKM 制造商全稱:AKM 功能描述:2ch 24bit DAC with AV Switch & HD/SD Video Filter |
| AK4706VQ | 制造商:AKM 制造商全稱:AKM 功能描述:2ch 24bit DAC with AV Switch & HD/SD Video Filter |
| AK4707 | 制造商:AKM 制造商全稱:AKM 功能描述:AV SCART Switch |
| AK4707EQ | 制造商:AKM 制造商全稱:AKM 功能描述:AV SCART Switch |
| AK4708 | 制造商:AKM 制造商全稱:AKM 功能描述:AV SCART Switch with Two RGB Outputs |
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