參數(shù)資料
型號: CDB4270
廠商: Cirrus Logic, Inc.
元件分類: Codec
英文描述: 24-Bit, 192 kHz Stereo Audio CODEC
中文描述: 24位192千赫立體聲音頻CODEC
文件頁數(shù): 39/48頁
文件大?。?/td> 730K
代理商: CDB4270
DS686A1
39
CS4270
8.7
DAC Channel A Volume Control - Address 07h
Function:
See
Section 8.8 DAC Channel B Volume Control - Address 08h
.
8.8
DAC Channel B Volume Control - Address 08h
Function:
The digital volume control allows the user to attenuate the signal in 0.5 dB increments from 0 to -127 dB.
The vol<0> bit activates a 0.5 dB attenuation when set, and no attenuation when cleared. The Vol[7:1]
bits activate attenuation equal to their decimal value (in dB). Example volume settings are decoded as
shown in
Table 13
. The volume changes are implemented as dictated by the DACSoft and DACZero-
Cross bits in the Transition Control register (see
Section 8.5.2
).
7
6
5
4
3
2
1
0
dacA
vol<7>
dacA
vol<6>
dacA
vol<5>
dacA
vol<4>
dacA
vol<3>
dacA
vol<2>
dacA
vol<1>
dacA
vol<0>
7
6
5
4
3
2
1
0
dacB
vol<7>
dacB
vol<6>
dacB
vol<5>
dacB
vol<4>
dacB
vol<3>
dacB
vol<2>
dacB
vol<1>
dacB
vol<0>
Binary Code
00000000
00000001
00101000
00101001
11111110
11111111
Volume Setting
0 dB
-0.5 dB
-20 dB
-20.5 dB
-127 dB
-127.5 dB
Table 13. Digital Volume Control
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相關代理商/技術參數(shù)
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