參數(shù)資料
型號： AK4620A
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 24 BIT 192KHZ AUDIO CODEC WITH IPGA
中文描述： 24位192kHz的音頻編解碼器單親遺傳算法
文件頁數(shù)： 33/42頁
文件大?。?/td> 395K
代理商： AK4620A
ASAHI KASEI
[AK4620A]
MS0368-E-00
2004/12
- 33 -
Addr Register Name
04H
Lch IPGA Control
05H
Rch IPGA Control
DEFAULT
D7
D6
D5
D4
D3
D2
D1
D0
IPGL7
IPGR7
1
IPGL6
IPGR6
0
IPGL5
IPGR5
0
IPGL4
IPGR4
0
IPGL3
IPGR3
0
IPGL2
IPGR2
0
IPGL1
IPGR1
0
IPGL0
IPGR0
0
IPGL/R7-0: ADC Input Gain Level
Refer to Table 10
Default: 80H (0dB)
The AK4620A includes two channel-independent analog volumes (IPGA), each with 32 levels in 0.5dB increments.
These are located in front of the ADC while digital volume controls (IATT) with 128 levels (including MUTE) are
located after the ADC. Control of both of these volume settings is handled by the same register address (04H for L-ch,
05H for R-ch). When the MSB of the register is “1”, the IPGA changes and when the MSB= “0” the IATT changes. 80H
is the crossover point of the IPGA and DATT, and both IPGA/IATT are set to 0dB.
The IPGAs are set to “00H” when the PDN pin goes “L”. After returning to “H”, the IPGAs fade in the default value,
“80H” by 531(1/fs) cycles. The IPGAs are set to “00H” when PWAD goes “0”. After returning to “1”, the IPGAs fade in
the current value, but the ADC output is “0” during the first 516(1/fs) cycles. The IPAGs are set to “00H” when RSTAD
goes “0”. After returning to “1”, the IPGAs fade in to the current value, but the ADC outputs “0” during the first 516(1/fs)
cycles. IATTs can be controlled in differential mode.
Analog
Volume (dB)
ATT (dB)
FFH ~ A5H
+18
0
+18
A4H
+18
0
+18
A3H
+17.5
0
+17.5
:
:
:
82H
+1.0
0
+1.0
81H
+0.5
0
+0.5
80H
0
0
0
7FH
0
-0.5
-0.5
7EH
0
-1.0
-1.0
:
:
:
02H
0
-63.0
-63.0
01H
0
-63.5
-63.5
00H
0
MUTE
MUTE
Table 10. IPGA code table
Addr Register Name
D7
D6
06H
Lch OATT Control
ATTL7
ATTL6
ATTL5
07H
Rch OATT Control
ATTR7
ATTR6
ATTR5
DEFAULT
1
1
ATT7-0: Attenuation Level
ATT = 20 log
10
(ATT_DATA / 255) [dB]
FFH : 0dB (Default)
00H : Mute
Data
Digital
Total Gain (dB)
Step width
(dB)
-
-
0.5
:
0.5
0.5
0.5
0.5
0.5
:
0.5
0.5
:
IPGA
Analog volume with 0.5dB/step
:
IATT
Digital volume with 0.5dB/step.
Soft-changes between each level.
D5
D4
D3
D2
D1
D0
ATTL4
ATTR4
1
ATTL3
ATTR3
1
ATTL2 ATTL1
ATTR2 ATTR1
1
ATTL0
ATTR0
1
1
1
相關(guān)PDF資料
PDF描述
AK4620AVF 24 BIT 192KHZ AUDIO CODEC WITH IPGA
AK4620B 24-Bit 192kHz Audio CODEC with IPGA
AK4620BVF 24-Bit 192kHz Audio CODEC with IPGA
AK4626A High Performance Multi-channel Audio CODEC
AK4626AVQ High Performance Multi-channel Audio CODEC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4620AVF 制造商:AKM 制造商全稱:AKM 功能描述:24 BIT 192KHZ AUDIO CODEC WITH IPGA
AK4620AVFP-E2 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:
AK4620B 制造商:AKM 制造商全稱:AKM 功能描述:24-Bit 192kHz Audio CODEC with IPGA
AK4620BVF 制造商:AKM 制造商全稱:AKM 功能描述:24-Bit 192kHz Audio CODEC with IPGA
AK4620BVFPE2 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:
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