參數(shù)資料
型號： CDB42L51
廠商： Cirrus Logic Inc
文件頁數(shù)： 21/43頁
文件大小： 0K
描述： BOARD EVAL FOR CS42L51 CODEC
標(biāo)準(zhǔn)包裝： 1
主要目的： 音頻編解碼器
嵌入式： 是，其它
已用 IC / 零件： CS42L51，CS8406，CS8415
主要屬性： 立體聲數(shù)字音頻發(fā)射器和接收器
次要屬性： 圖形用戶界面，S/PDIF 接口
已供物品： 板，CD
相關(guān)產(chǎn)品： CS42L51-DNZR-ND - IC CODEC STEREO W/HDPN AMP 32QFN
598-1627-ND - IC CODEC STEREO W/HDPN AMP 32QFN
CS42L51-CNZR-ND - IC CODEC LOW-V 24BIT 32-QFP
598-1045-ND - IC CODEC STEREO W/HDPN AMP 32QFN
其它名稱： 598-1005
28
DS679F1
CS42L51
4.3
Analog Inputs
AINxA and AINxB are the analog inputs, internally biased to VQ, that accepts line-level and MIC-level sig-
nals, allowing various gain and signal adjustments for each channel.
4.3.1
Digital Code, Offset & DC Measurement
The ADC output data is in two’s complement binary format. For inputs above positive full scale or below
negative full scale, the ADC will output 7FFFFFH or 800000H, respectively and cause the ADC overflow
bit to be set to a ‘1’.
Given the two’s complement format, low-level signals may cause the MSB of the serial data to periodically
toggle between ‘1’ and ‘0’, possibly introducing noise into the system as the bit switches back and forth.
To prevent this phenomena, a constant DC offset is added to the serial data bringing the low-level signal
just above the point at which the MSB would normally toggle, thus reducing the noise introduced. Note
The CODEC may be used to measure DC voltages by disabling the high-pass filter for the designated
channel. DC levels are measured relative to VQ and will be decoded as positive two’s complement binary
numbers above VQ and negative two’s complement binary numbers below VQ.
Software
Controls:
Multibit
Oversampling
ADC
AIN3A/ MICIN1
MICA_BOOST
Attenuator
ALC
PGAA_VOL[5:0]
ADC_SNGVOL
0/-96dB
1dB steps
ADCA_ATT[7:0]
ADCA_HPF ENABLE
ADCA_HPF FREEZE
PDN_ADCA
ADCA_MUTE
SOFTA
ALC_ENA
ALCB_SRDIS
ALCB_ZCDIS
PDN_MICA
MICBIAS
PDN_MICBIAS
MICBIAS_LVL[1:0]
PC
M
Se
ri
a
l
In
te
rf
ac
e
MICBIAS_SEL
TO SIGNAL PROCESSING
ENGINE (SPE)
INV_ADCA
ALC_ARATE[5:0]
ALC_RRATE[5:0]
MAX[2:0]
MIN[2:0]
ALC_ENB
ALCA_SRDIS
ALCA_ZCDIS
MUX
AIN1A
AIN2A
PGA
+16/
32 dB
AINA_MUX[1:0]
PDN_PGAA
+12/-3dB
0.5dB steps
SOFTA
ZCROSSA
Multibit
Oversampling
ADC
AIN3B/ MICIN2/
MICBIAS
MICB_BOOST
PGAB_VOL[5:0]
ADC_SNGVOL
0/-96dB
1dB steps
ADCB_ATT[7:0]
ADCB_HPF ENABLE
ADCB_HPF FREEZE
PDN_ADCB
ADCB_MUTE
SOFTB
PDN_MICB
INV_ADCB
MUX
AIN1B
AIN2B/MICBIAS
PGA
+16/
32 dB
AINB_MUX[1:0]
PDN_PGAB
+12/-3dB
0.5dB steps
SOFTB
ZCROSSB
Noise Gate
NG_ALL
NG_EN
THRESH[3:0]
NGDELAY[1:0]
Attenuator
Σ
MUX
MICMIX
MUX
FROM SIGNAL
PROCESSING ENGINE
(SPE)
DIGMIX
+20dB
Digital
Boost
ADCA_DBOOST
+20dB
Digital
Boost
ADCB_DBOOST
Figure 8. Analog Input Architecture
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CDB42L51/FAE 制造商:Cirrus Logic 功能描述:EVAL BOARD FOR THE CS42L51 PORTABLE STEREO CODEC - Bulk
CDB42L52 功能描述:音頻 IC 開發(fā)工具 Eval Bd LP CODEC w/classD Spkr Driver RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
CDB42L52/FAE 制造商:Cirrus Logic 功能描述:EVAL BD LOW-VOLTAGE STEREO CODEC - Bulk
CDB42L55 功能描述:音頻 IC 開發(fā)工具 Eval Bd Ultra Low PWR Stereo Codec RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
CDB42L56 功能描述:音頻 IC 開發(fā)工具 Eval Bd 24Bit Ultra LP Ster CD w/clH HP RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
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