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參數(shù)資料
| 型號(hào)： | CDB42448 |
| 廠商： | Cirrus Logic, Inc. |
| 元件分類： | Codec |
| 英文描述： | 108 dB, 192 kHz 6-in, 8-out CODEC |
| 中文描述： | 108分貝192千赫6 - 8 -出編解碼器 |
| 文件頁(yè)數(shù)： | 31/70頁(yè) |
| 文件大?。?/td> | 1146K |
| 代理商： | CDB42448 |
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DS648PP2
31
4.3.6
Each DAC’s output level is controlled via the Volume Control registers operating over the range
of 0 to -127.5 dB attenuation with 0.5 dB resolution. See “AOUTX Volume Control (addresses
08h- 0Fh)” on page 52. Volume control changes are programmable to ramp in increments of
0.125 dB at the rate controlled by the SZC[1:0] bits in the Digital Volume Control register. See
“Transition Control (address 06h)” on page 50.
Each output can be independently muted via mute control bits in the register “DAC Channel
Mute (address 07h)” on page 52. When enabled, each AOUTx_MUTE bit attenuates the corre-
sponding DAC to its maximum value (-127.5 dB). When the AOUTx_MUTE bit is disabled, the
corresponding DAC returns to the attenuation level set in the Volume Control register. The at-
tenuation is ramped up and down at the rate specified by the SZC[1:0] bits.
Digital Volume Control
4.3.7
The CS42448 includes on-chip digital de-emphasis optimized for a sample rate of 44.1 kHz. The
filter response is shown in Figure 14. The de-emphasis feature is included to accommodate au-
dio recordings that utilize 50/15
μ
s pre-emphasis equalization as a means of noise reduction.
De-emphasis is only available in Single Speed Mode.
Please see “DAC De-Emphasis Control
(DAC_DEM)” on page 49 for de-emphasis control.
De-Emphasis Filter
AOUTx+
AOUTx-
Full-Scale
Differential
Output Level =
(AOUTx+) - (AOUTx-) = 6.5 V
PP
= 2.3 V
RMS
4.125 V
2.5 V
0.875 V
5.0 V
4.125 V
2.5 V
0.875 V
VA
Figure 13. Full-Scale Output
Gain
dB
-10dB
0dB
Frequency
T2 = 15 μs
T1=50 μs
F1
F2
3.183 kHz
10.61 kHz
Figure 14. De-Emphasis Curve
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CDB4245 | 105 dB, 24-Bit, 192 kHz Streo Sudio CODEC |
| CDB42518 | 110 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver |
| CDB42528 | 114 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver |
| CDB4270 | 24-Bit, 192 kHz Stereo Audio CODEC |
| CDB4271 | 24-Bit, 192 kHz Stereo Audio CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CDB4245 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd 192kHz CODEC w/PGA & Input Mux RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB42518 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB42528 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB4265 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd 192kHz CODEC w/PGA & Input Mux RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB4270 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd 105dB 192kHz CODEC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
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