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参数资料
| 型号： | CS4201 |
| 厂商： | Cirrus Logic, Inc. |
| 元件分类： | Codec |
| 英文描述： | CrystalClear Audio Codec 97 with headphone Amplifier |
| 中文描述： | CrystalClear音频编解码器97耳机放大器 |
| 文件页数： | 14/68页 |
| 文件大小： | 1144K |
| 代理商： | CS4201 |
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CS4201
14
DS483PP3
2.2
Control Registers
The CS4201 contains a set of AC
’
97 compliant
control registers, and a set of Cirrus Logic defined
control registers. These registers control the basic
functions and features of the CS4201. Read access-
es of the control registers by the AC
’
97 controller
are accomplished with the requested register index
in Slot 1 of a SDATA_OUT frame. The following
SDATA_IN frame will contain the read data in its
Slot 2. Write operations are similar, with the regis-
ter index in Slot 1 and the write data in Slot 2 of a
SDATA_OUT frame. The function of each input
and output frame is detailed in Section 3,
AC-Link
Frame Definition
. Individual register descriptions
are found in Section 4,
Register Interface
.
2.3
The sample rate converters (SRC) provide high ac-
curacy digital filters supporting sample frequencies
other than 48 kHz to be captured from the CS4201
or played from the controller. AC
’
97 requires sup-
port for two audio rates (44.1 and 48 kHz). In addi-
tion, the Intel
I/O Controller Hub (ICHx)
specification [9] requires support for five more au-
dio rates (8, 11.025, 16, 22.05, and 32 kHz). The
CS4201 supports all these rates, as shown in
Table 8 on page 31.
Sample Rate Converters
2.4
Mixers
The CS4201 input and output mixers are illustrated
in Figure 8. The stereo input mixer sums together
the analog inputs to the CS4201 according to the
settings in the volume control registers. The stereo
output mixer sums the output of the stereo input
mixer with the PC_BEEP and PHONE signals. Af-
ter going through the 3D output mixer, the stereo
output mix is then sent to the LINE_OUT and
HP_OUT pins of the CS4201. The mono output
mixer generates a monophonic sum of the left and
right audio channels from the stereo input mixer.
The mono output mix is then sent to the
MONO_OUT pin on the CS4201.
2.5
Input Mux
The input multiplexer controls which analog input
is sent to the ADCs. The output of the input mux is
converted to stereo 18-bit digital PCM data and
transmitted to the controller by means of the
AC-link SDATA_IN signal.
2.6
Volume Control
The CS4201 volume registers control analog input
levels to the input mixer and analog output levels,
including the master volume level. The PC_BEEP
volume control uses 3 dB steps with a range of 0 dB
to -45 dB attenuation. All other analog volume con-
trols use 1.5 dB steps. The analog inputs have a
mixing range of +12 dB signal gain to -34.5 dB sig-
nal attenuation. The analog output volume controls
have from 0 dB to -46.5 dB attenuation for
LINE_OUT, HP_OUT, and MONO_OUT.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS420-1 | 制造商:Captive Fastener Corporation 功能描述: |
| CS4202 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:CrystalClear? Audio Codec ’97 for Portable Computing |
| CS420-2 | 制造商:Captive Fastener Corporation 功能描述: |
| CS4202_05 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:Audio Codec ’97 with Headphone Amplifier |
| CS4202-JQ | 功能描述:接口—CODEC IC AC’97 CODEC w/Headphone Amp RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
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