參數(shù)資料
型號： CDB42L51
廠商： Cirrus Logic Inc
文件頁數(shù)： 30/43頁
文件大小： 0K
描述： BOARD EVAL FOR CS42L51 CODEC
標準包裝： 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
相關產品： 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
36
DS679F1
CS42L51
4.4.5
Tone Control
Shelving filters are used to implement bass and treble (boost and cut) with four selectable corner frequen-
cies. Boosting will affect peak detect and limiting when levels exceed the maximum threshold settings.
4.4.6
Limiter
When enabled, the limiter monitors the digital input signal before the DAC modulator, detects when levels
exceed the maximum threshold settings and lowers the AOUT volume at a programmable attack rate be-
low the maximum threshold. When the input signal level falls below the maximum threshold, the AOUT
volume returns to its original level set in the Volume Control register at a programmable release rate. At-
tack and release rates are affected by the DAC soft ramp/zero cross settings and sample rate, Fs. Limiter
soft ramp and zero cross dependency may be independently enabled/disabled.
Recommended settings: Best limiting performance may be realized with the fastest attack and slowest
release setting with soft ramp enabled in the control registers. The “cushion” bits allow the user to set a
threshold slightly below the maximum threshold for hysteresis control - this cushions the sound as the lim-
iter attacks and releases.
Note:
1.
When the Limiter is enabled, the AOUT Volume is automatically controlled and should not be adjusted
manually. Alternative volume control may be realized using the PCMMIXx_VOL[6:0] bits.
2.
The Limiter maintains the output signal between the CUSH and MAX thresholds. As the digital input
signal level changes, the level-controlled output may not always be the same but will always fall within
the thresholds.
Software
Controls:
Software
Controls:
FREQ[3:0]
...
BPVOL[4:0]
ONTIME[3:0]
OFFTIME[2:0]
REPEAT = '0'
BEEP = '1'
REPEAT = '1'
BEEP = '0'
REPEAT = '1'
BEEP = '1'
SINGLE-BEEP: Beep turns on at a
configurable frequency (FREQ) and
volume (BPVOL) for the duration of
ONTIME. BEEP must be cleared
and set for additional beeps.
MULTI-BEEP: Beep turns on at a configurable frequency (FREQ)
and volume (BPVOL) for the duration of ONTIME and turns off for
the duration of OFFTIME. On and off cycles are repeated until
REPEAT is cleared.
CONTINUOUS BEEP: Beep turns on at a configurable frequency (FREQ) and volume (BPVOL) and remains
on until REPEAT is cleared.
Figure 15. Beep Configuration Options
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相關代理商/技術參數(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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