CS4270_06 CIRRUS [Cirrus Logic], CS4270_06 Datasheet - Page 40
CS4270_06
Manufacturer Part Number
CS4270_06
Description
24-Bit, 192 kHz Stereo Audio CODEC
Manufacturer
CIRRUS [Cirrus Logic]
Datasheet
1.CS4270_06.pdf
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40
8.7
8.8
vol<7>
vol<7>
dacA
dacB
7
7
DAC Channel A Volume Control - Address 07h
DAC Channel B Volume Control - Address 08h
Function:
See
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
Cross bits in the Transition Control register (see
Section 8.8 DAC Channel B Volume Control - Address
vol<6>
vol<6>
dacA
dacB
Table
6
6
13. The volume changes are implemented as dictated by the DACSoft and DACZero-
Binary Code
00000000
00000001
00101000
00101001
11111110
11111111
vol<5>
vol<5>
dacA
dacB
5
5
Table 13. Digital Volume Control
vol<4>
vol<4>
dacA
dacB
4
4
Volume Setting
Section
-127.5 dB
vol<3>
vol<3>
-20.5 dB
-127 dB
-0.5 dB
dacA
dacB
-20 dB
0 dB
3
3
8.5.2).
08h.
vol<2>
vol<2>
dacA
dacB
2
2
vol<1>
vol<1>
dacA
dacB
1
1
CS4270
DS686PP1
vol<0>
vol<0>
dacA
dacB
0
0
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