CS5376-BS データシートの表示（PDF） - Cirrus Logic
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CS5376-BS Datasheet PDF : 122 Pages
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CS5376
6.3 SPI 2 Registers ................................................................................................................ 44
6.3.1 SPI 2 Command Register ................................................................................... 44
6.3.2 SPI 2 Data Register ............................................................................................ 44
6.3.3 SPI 2 Configuration Register .............................................................................. 45
7. MODULATOR DATA INTERFACE ........................................................................................ 52
7.1 Modulator Interface Pin Descriptions ............................................................................... 52
7.2 Modulator Data Inputs ..................................................................................................... 52
7.3 Modulator Flag Inputs ...................................................................................................... 52
7.4 Modulator Clock Generation ............................................................................................ 53
7.4.1 Modulator Clock Enables .................................................................................... 53
7.5 Modulator Synchronization .............................................................................................. 54
7.5.1 Modulator Sync Enable ....................................................................................... 54
8. DIGITAL DECIMATION FILTER ............................................................................................ 56
8.1 Filter Initialization ............................................................................................................. 56
8.1.1 Decimation Engine Clock .................................................................................... 56
8.1.2 Channel Enable .................................................................................................. 57
8.1.3 Output Filter Selection ........................................................................................ 57
8.1.4 Output Word Rate ............................................................................................... 58
8.2 Hardware Sinc Filter ........................................................................................................ 61
8.2.1 SINC1 Filter ........................................................................................................ 61
8.2.2 SINC2 Filter ........................................................................................................ 61
8.2.3 Sinc Filter Synchronization ................................................................................. 63
8.3 FIR Filters ........................................................................................................................ 63
8.3.1 FIR1 Filter ........................................................................................................... 63
8.3.2 FIR2 Filter ........................................................................................................... 63
8.3.3 Maximum FIR Coefficients .................................................................................. 64
8.3.4 FIR Coefficient Upload ........................................................................................ 64
8.3.5 FIR Filter Synchronization ................................................................................... 64
8.4 IIR Filter ........................................................................................................................... 64
8.4.1 1st Order IIR ....................................................................................................... 65
8.4.2 2nd Order IIR ...................................................................................................... 65
8.4.3 3rd Order IIR ....................................................................................................... 65
8.4.4 IIR coefficient upload .......................................................................................... 65
8.4.5 IIR Filter Synchronization .................................................................................... 65
8.5 Reference Coefficients .................................................................................................... 66
8.5.1 Reference FIR coefficients .................................................................................. 66
8.5.2 Reference IIR coefficient set ............................................................................... 67
9. GAIN AND OFFSET CORRECTION ...................................................................................... 68
9.1 Gain Correction ............................................................................................................... 68
9.1.1 Gain Register Calculation ................................................................................... 68
9.2 Offset Correction ............................................................................................................. 69
9.2.1 Offset Register Calculation ................................................................................. 69
9.3 Offset Calibration ............................................................................................................. 69
10. SERIAL DATA OUTPUT PORT ........................................................................................... 74
10.1 SD Port Pin Descriptions ............................................................................................... 74
10.2 Serial Data Transactions ............................................................................................... 75
10.3 SD Port Configurations .................................................................................................. 75
10.4 SD Port Data Format ..................................................................................................... 76
11. TIME BREAK FUNCTION .................................................................................................... 78
11.1 Time Break Pin Description ........................................................................................... 78
11.2 Time Break Delay .......................................................................................................... 78
11.3 TB Flag Output .............................................................................................................. 78
12. SYSTEM SYNCHRONIZATION ........................................................................................... 80
DS256PP1
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