CS8405A

DS469PP4

3

8.9 Interrupt 1 Mode MSB (Ah) and Interrupt 1 Mode LSB(Bh).............................................. 21

8.10 Interrupt 2 Mask (Ch)...................................................................................................... 21

8.11 Interrupt 2 Mode MSB (Dh) and Interrupt Mode 2 LSB(Eh) ........................................... 22

8.12 Channel Status Data Buffer Control (12h) ...................................................................... 22

8.13 User Data Buffer Control (13h) ....................................................................................... 23

8.14 Channel Status bit or User bit Data Buffer (20h - 37h) ................................................... 23

8.15 CS8405A I.D. and Version Register (7Fh) (Read Only) ................................................. 23

9. PIN DESCRIPTION - SOFTWARE MODE ............................................................................. 24

10. HARDWARE MODE ............................................................................................................. 26

10.1 Channel Status, User and Validity Data ........................................................................ 26

10.2 Serial Audio Port Formats ............................................................................................. 26

11. PIN DESCRIPTION - HARDWARE MODE .......................................................................... 28

12. APPLICATIONS ................................................................................................................... 30

12.1 Reset, Power Down and Start-up .................................................................................. 30

12.2 ID Code and Revision Code .......................................................................................... 30

12.3 Power Supply, Grounding, and PCB layout ................................................................... 30

12.4 Synchronization of Multiple CS8405As ......................................................................... 30

12.4 ORDERING INFORMATION ......................................................................................... 30

13. PACKAGE DIMENSIONS .................................................................................................. 31

14. APPENDIX A: EXTERNAL AES3/SPDIF/IEC60958 TRANSMITTER COMPONENTS ...... 33

14.1 AES3 Transmitter External Components ....................................................................... 33

14.2 Isolating Transformer Requirements ............................................................................. 33

15. APPENDIX B: CHANNEL STATUS AND USER DATA BUFFER MANAGEMENT ........... 34

15.1 AES3 Channel Status(C) Bit Management .................................................................... 34

15.1.1 Accessing the E buffer ...................................................................................... 34

15.1.2 Serial Copy Management System (SCMS) ....................................................... 35

15.1.3 Channel Status Data E Buffer Access .............................................................. 35

15.2 AES3 User (U) Bit Management .................................................................................... 35

15.2.1 Mode 1: Transmit All Zeros ............................................................................... 35

15.2.2 Mode 2: Block Mode ......................................................................................... 35

LIST OF FIGURES

Figure 1. Audio Port Master Mode Timing ...................................................................................... 6

Figure 2. Audio Port Slave Mode and Data Input Timing................................................................ 6

Figure 3. SPI Mode timing............................................................................................................... 7

Figure 4. Two-Wire Mode timing ..................................................................................................... 8

Figure 5. Recommended Connection Diagram for Software Mode ................................................ 9

Figure 6. Serial Audio Input Example Formats ............................................................................. 11

Figure 7. AES3 Transmitter Timing for C, U and V pin input data ................................................ 13

Figure 8. Control Port Timing in SPI Mode ................................................................................... 14

Figure 9. Control Port Timing in Two-Wire Mode.......................................................................... 15

Figure 10. Hardware Mode ...........................................................................................................26

Figure 11. Professional Output Circuit .......................................................................................... 33

Figure 12. Consumer Output Circuit ............................................................................................. 33

Figure 13. TTL/CMOS Output Circuit............................................................................................ 33

Figure 14. Channel Status Data Buffer Structure.......................................................................... 34

Figure 15. Flowchart for Writing the E Buffer ................................................................................ 34