7.4.5 MUTE Polarity and DETECT (MUTEP1:0) Bits 1-0 Default = 00 00 - Auto polarity detect, selected from AMUTEC" />
參數(shù)資料
型號(hào)： CDB4398
廠商： Cirrus Logic Inc
文件頁(yè)數(shù)： 28/46頁(yè)
文件大?。?/td> 0K
描述： BOARD EVAL FOR CS4398 DAC
標(biāo)準(zhǔn)包裝： 1
DAC 的數(shù)量： 2
位數(shù)： 24
采樣率（每秒）： 192k
數(shù)據(jù)接口： I²C，SPI?
DAC 型： 電壓
工作溫度： -10°C ~ 70°C
已供物品： 板，線纜
已用 IC / 零件： CS4398
產(chǎn)品目錄頁(yè)面： 757 (CN2011-ZH PDF)
相關(guān)產(chǎn)品： 598-1067-5-ND - IC DAC 120DB 192KHZ W/VC 28TSSOP
其它名稱： 598-1155
34
DS568F1
CS4398
7.4.5
MUTE Polarity and DETECT (MUTEP1:0) Bits 1-0
Default = 00
00 - Auto polarity detect, selected from AMUTEC pin
01 - Reserved
10 - Active low mute polarity
11 - Active high mute polarity
Function:
Auto mute polarity detect (00)
See section 4.3 on page 20 for description.
Active low mute polarity (10)
When RST is low, the outputs are high-impedance and will need to be biased active. Once reset has been
released and after this bit is set, the MUTEC output pins will be active low polarity.
Active high mute polarity (11)
At reset time, the outputs are high-impedance and will need to be biased active. Once reset has been
released and after this bit is set, the MUTEC output pins will be active high polarity.
7.5
Channel A Volume Control - Register 05h
7.6
Channel B Volume Control - Register 06h
7.6.1
Digital Volume Control (VOL7:0) Bits 7-0
Default = 00h (0 dB)
Function:
The Digital Volume Control registers allow independent control of the signal levels in 1/2 dB increments
from 0 to -127.5 dB. Volume settings are decoded as shown in Table 7. The volume changes are imple-
mented as dictated by the Soft and Zero Cross bits in the Power and Muting Control register. Note that
the values in the volume setting column in Table 7 are approximate. The actual attenuation is determined
by taking the decimal value of the volume register and multiplying by 6.02/12.
76
543
21
0
VOL7
VOL6
VOL5
VOL4
VOL3
VOL2
VOL1
VOL0
00
000
00
0
Binary Code
Decimal Value
Volume Setting
00000000
0
0 dB
00000001
1
-0.5 dB
00000110
6
-3.0 dB
11111111
255
-127.5 dB
Table 7. Example Digital Volume Settings
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