参数资料
型号: CDB4245
厂商: Cirrus Logic Inc
文件页数: 32/59页
文件大小: 0K
描述: BOARD EVAL FOR CS4245 CODEC
标准包装: 1
主要目的: 音频编解码器
嵌入式: 是,FPGA / CPLD
已用 IC / 零件: CS4245
主要属性: 4 个单端模拟和 1 个麦克风输入和 8 个输出,S/PDIF 发射器和接收器
次要属性: 图形用户界面
已供物品:
产品目录页面: 754 (CN2011-ZH PDF)
相关产品: CS4245-DQZR-ND - IC CODEC AUD STER 104DB 48-LQFP
598-1616-ND - IC CODEC AUD STER 104DB 48LQFP
598-1034-ND - IC CODEC AUD STER 104DB 48LQFP
其它名称: 598-1501
CS4245
4.2.3
Master Mode
As a clock master, LRCK and SCLK will operate as outputs. The two serial ports may be independently
placed into Master or Slave mode. Each LRCK and SCLK is internally derived from its respective MCLK
with LRCK equal to Fs and SCLK equal to 64 x Fs as shown in Figure 13 .
MCLK1 Freq Bits
÷256
00
MCLK1
÷1
÷1.5
÷2
÷3
÷4
MCLK2 Freq Bits
÷1
000
001
010
011
100
000
ASynch Bit
÷128
÷64
ADC_FM Bits
÷4
÷2
÷1
÷256
÷128
01
10
00
01
10
00
01
LRCK1
SCLK1
LRCK2
MCLK2
÷1.5
÷2
÷3
÷4
001
010
011
100
0
1
÷64
DAC_FM Bits
÷4
÷2
10
00
01
SCLK2
÷1
10
Figure 13. Master Mode Clocking
4.2.4
Slave Mode
In Slave Mode, SCLK and LRCK operate as inputs. Each serial port may be independently placed into
Slave Mode. The Left/Right clock signal must be equal to the sample rate, Fs. If operating in Asynchro-
nous Mode, LRCK1 must be synchronously derived from MCLK1 and LRCK2 must be synchronously de-
rived from MCLK2. If operating in Synchronous Mode, LRCK1, and LRCK2 must be synchronously
derived from MCLK1. For more information on Synchronous and Asynchronous Modes, see “Synchro-
For each serial port, the serial bit clock must be equal to 128x, 64x, 48x or 32x Fs, depending on the de-
sired speed mode. If operating in Asynchronous Mode, the serial bit clock SCLK1 must be synchronously
derived from MCLK1 and SCLK2 must be synchronously derived from MCLK2. If operating in Synchro-
nous Mode, SCLK1, and SCLK2 must be synchronously derived from MCLK1. Refer to Table 4 for re-
quired serial bit clock to Left/Right clock ratios.
Single-Speed
Double-Speed
Quad-Speed
SCLK/LRCK Ratio
32x, 48x, 64x, 128x
32x, 48x, 64x
32x, 48x, 64x
Table 4. Slave Mode Serial Bit Clock Ratios
4.3
32
High-Pass Filter and DC Offset Calibration
When using operational amplifiers in the input circuitry driving the CS4245, a small DC offset may be driven
into the A/D converter. The CS4245 includes a high-pass filter after the decimator to remove any DC offset
which could result in recording a DC level, possibly yielding clicks when switching between devices in a mul-
tichannel system.
DS656F3
相关PDF资料
PDF描述
CDB42L55 BOARD EVAL FOR CS42L55 CODEC
CDB44L11 EVALUATION BOARD FOR CS44L11
CDB48500-USB KIT USB EVALUATION FOR CDB48500
CDB5378 EVALUATION BOARD FOR CS5378
CDB5460AU EVALUATION BOARD FOR CS5460A
相关代理商/技术参数
参数描述
CDB42518 功能描述:音频 IC 开发工具 Eval Bd RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
CDB42528 功能描述:音频 IC 开发工具 Eval Bd RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
CDB4265 功能描述:音频 IC 开发工具 Eval Bd 192kHz CODEC w/PGA & Input Mux RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
CDB4270 功能描述:音频 IC 开发工具 Eval Bd 105dB 192kHz CODEC RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
CDB4271 功能描述:音频 IC 开发工具 Eval Bd CS4271 RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V