參數(shù)資料
型號(hào): CS43L22-CNZ
廠商: Cirrus Logic Inc
文件頁數(shù): 17/66頁
文件大?。?/td> 0K
描述: IC DAC W/HDPN & SPKR AMPS 40QFN
標(biāo)準(zhǔn)包裝: 50
位數(shù): 24
數(shù)據(jù)接口: 串行
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 40-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 40-QFN(6x6)
包裝: 托盤
輸出數(shù)目和類型: 2 電壓,單極
采樣率(每秒): 96k
產(chǎn)品目錄頁面: 756 (CN2011-ZH PDF)
配用: 598-1529-ND - BOARD EVAL FOR CS43L22
其它名稱: 598-1650
24
DS792F2
CS43L22
Confidential Draft
3/4/10
4.3
Analog Passthrough
The CS43L22 accommodates analog routing of the analog input signal directly to the headphone amplifiers
by using the PASSTHRUx mux. This feature is useful in applications that utilize an FM tuner where audio
recovered over-the-air must be transmitted to the headphone amplifier directly. This analog passthrough
path reduces power consumption and is immune to modulator switching noise that could interfere with some
tuners.
Four analog input channels can be chosen or summed by using the PASSxSEL bits as shown in Figure 8
to provide input to the CS43L22 when in analog passthrough mode. A pair of passthrough amplifiers can be
used to mute and apply gain to the input signals.
Referenced Control
Register Location
Analog Front End
PASSB=A ............................
ANLGSFTx ..........................
ANLGZCx ............................
PASSxSEL4,3,2,1 ................
PASSxMUTE .......................
PASSxVOL[7:0] ...................
PASSTHRUx........................
AIN4B
AIN1B
AIN2B
AIN3B
ANALOG PASS
THRU TO
HEADPHONE
AMPLIFIER MUX
Σ
AIN4A
AIN1A
AIN2A
AIN3A
Σ
Analog Passthru
Amplifiers
ANLGSFTB
ANLGGZCB
PASSB=A
PASSBMUTE
PASSBVOL[7:0]
+12dB/-60dB
0.5 dB steps
ANLGSFTA
ANLGGZCA
PASSB=A
PASSAMUTE
PASSAVOL[7:0]
+12dB/-60dB
0.5 dB steps
PASSASEL[4:1]
PASSBSEL[4:1]
DAC A
Output
DAC B
Output
PASSTHRUA
PASSTHRUB
Figure 8. Analog Passthrough Signal Flow
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