CS8405A データシートの表示（PDF） - Cirrus Logic

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CS8405A

96 kHz Digital Audio Interface Transmitter

Cirrus Logic 

CS8405A

14. APPENDIX A: EXTERNAL AES3/SPDIF/IEC60958 TRANSMITTER AND RECEIVER COMPO-

NENTS .................................................................................................................................. 34

14.1 AES3 Transmitter External Components ....................................................................... 34

14.2 Isolating Transformer Requirements ............................................................................. 34

15. APPENDIX B: CHANNEL STATUS AND USER DATA BUFFER MANAGEMENT ........... 35

15.1 AES3 Channel Status(C) Bit Management .................................................................... 35

15.1.1 Accessing the E buffer ...................................................................................... 35

15.1.2 Serial Copy Management System (SCMS) ....................................................... 36

15.1.3 Channel Status Data E Buffer Access .............................................................. 36

15.2 AES3 User (U) Bit Management .................................................................................... 36

15.2.1 Mode 1: Transmit All Zeros ............................................................................... 36

15.2.2 Mode 2: Block Mode ......................................................................................... 36

16. REVISION HISTORY ............................................................................................................ 37

LIST OF FIGURES

Figure 1. Audio Port Master Mode Timing ...................................................................................... 7

Figure 2. Audio Port Slave Mode and Data Input Timing................................................................ 7

Figure 3. SPI Mode timing............................................................................................................... 8

Figure 4. I²C Mode timing................................................................................................................ 9

Figure 5. Recommended Connection Diagram for Software Mode .............................................. 10

Figure 6. Serial Audio Input Example Formats ............................................................................. 12

Figure 7. AES3 Transmitter Timing for C, U, and V Pin Input Data .............................................. 14

Figure 8. Control Port Timing in SPI Mode ................................................................................... 15

Figure 9. Control Port Timing in I²C Mode .................................................................................... 16

Figure 10. Hardware Mode ........................................................................................................... 27

Figure 11. Professional Output Circuit .......................................................................................... 34

Figure 12. Consumer Output Circuit ............................................................................................. 34

Figure 13. TTL/CMOS Output Circuit............................................................................................ 34

Figure 14. Channel Status Data Buffer Structure.......................................................................... 35

Figure 15. Flowchart for Writing the E Buffer ................................................................................ 35

LIST OF TABLES

Table 1. Control Register Map Summary...................................................................................... 17

Table 2. Hardware Mode COPY/C and ORIG pin functions ......................................................... 27

Table 3. Hardware Mode Serial Audio Port Format Selection ...................................................... 28

Table 4. Equivalent Register Settings of Serial Audio Input Formats Available in Hardware Mode28

Table 5. Revision History .............................................................................................................. 37

DS469F2

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