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参数资料
型号： CDB8421
厂商： Cirrus Logic Inc
文件页数： 11/17页
文件大小： 0K
描述： BOARD EVAL FOR CS8421
标准包装： 1
主要目的： 音频，采样率转换器
嵌入式： 否
已用 IC / 零件： CS8421，CS8406，CS8416
主要属性： 带数字音频发射器和接收器的采样率转换器
次要属性： S/PDIF 接口
已供物品： 板，CD
产品目录页面： 759 (CN2011-ZH PDF)
相关产品： 598-1730-ND - IC SAMPLE RATE CONVERTER 20QFN
598-1126-5-ND - IC SAMPLE RATE CONVERTER 20TSSOP
其它名称： 598-1018
DS641F6
3
CS8421
TABLE OF CONTENTS
1. PIN DESCRIPTIONS ............................................................................................................................ 5
1.1 TSSOP Pin Descriptions ................................................................................................................ 5
1.2 QFN Pin Descriptions ..................................................................................................................... 7
2. CHARACTERISTICS AND SPECIFICATIONS ..................................................................................... 9
SPECIFIED OPERATING CONDITIONS .............................................................................................. 9
ABSOLUTE MAXIMUM RATINGS ........................................................................................................9
PERFORMANCE SPECIFICATIONS.................................................................................................. 10
DIGITAL FILTER CHARACTERISTICS .............................................................................................. 11
DC ELECTRICAL CHARACTERISTICS ............................................................................................. 11
DIGITAL INPUT CHARACTERISTICS ................................................................................................ 12
DIGITAL INTERFACE SPECIFICATIONS .......................................................................................... 12
SWITCHING SPECIFICATIONS ......................................................................................................... 12
3. TYPICAL CONNECTION DIAGRAMS ................................................................................................14
4. APPLICATIONS .................................................................................................................................. 16
4.1 Three-wire Serial Input/Output Audio Port .................................................................................... 16
4.2 Mode Selection ............................................................................................................................. 17
4.3 Sample Rate Converter (SRC) ..................................................................................................... 19
4.3.1 Data Resolution and Dither .............................................................................................. 19
4.3.2 SRC Locking and Varispeed ............................................................................................ 19
4.3.3 Bypass Mode ................................................................................................................... 19
4.3.4 Muting .............................................................................................................................. 20
4.3.5 Group Delay and Phase Matching Between Multiple CS8421 Parts ............................... 20
4.3.6 Master Clock .................................................................................................................... 20
4.3.7 Clocking ........................................................................................................................... 21
4.4 Time Division Multiplexing (TDM) Mode ....................................................................................... 21
4.5 Reset, Power-Down, and Start-Up ............................................................................................... 22
4.6 Power Supply, Grounding, and PCB Layout ................................................................................ 23
5. PERFORMANCE PLOTS
................................................................................................................ 24
6. PACKAGE DIMENSIONS ................................................................................................................... 33
TSSOP THERMAL CHARACTERISTICS ........................................................................................... 33
QFN THERMAL CHARACTERISTICS ................................................................................................ 34
7. ORDERING INFORMATION ............................................................................................................... 35
8. REVISION HISTORY .......................................................................................................................... 35
LIST OF FIGURES
Figure 1. Non-TDM Slave Mode Timing..................................................................................................... 13
Figure 2. TDM Slave Mode Timing ............................................................................................................ 13
Figure 3. Non-TDM Master Mode Timing................................................................................................... 13
Figure 4. TDM Master Mode Timing .......................................................................................................... 13
Figure 5. Typical Connection Diagram, No External Master Clock ............................................................ 14
Figure 6. Typical Connection Diagram, Master and Slave Modes ............................................................. 15
Figure 7. Serial Audio Interface Format - IS ............................................................................................. 17
Figure 8. Serial Audio Interface Format - Left-Justified.............................................................................. 17
Figure 9. Serial Audio Interface Format - Right-Justified ........................................................................... 17
Figure 10. Typical Connection Diagram for Crystal Circuit ........................................................................ 21
Figure 11. TDM Slave Mode Timing Diagram............................................................................................ 21
Figure 12. TDM Master Mode Timing Diagram.......................................................................................... 22
Figure 13. TDM Mode Configuration (All CS8421 Outputs are Slave)....................................................... 22
Figure 14. TDM Mode Configuration (First CS8421 Output is Master, All Others are Slave) .................... 22
Figure 15. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 48 kHz:48 kHz ..................................... 24
Figure 16. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 44.1 kHz:192 kHz ................................ 24
Figure 17. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 44.1 kHz:48 kHz .................................. 24
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