CS8427

2

DS477F5

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ......................................................................... 5

SPECIFIED OPERATING CONDITIONS ................................................................................. 5

ABSOLUTE MAXIMUM RATINGS ........................................................................................... 5

DC ELECTRICAL CHARACTERISTICS................................................................................... 6

DIGITAL INPUT CHARACTERISTICS ..................................................................................... 6

DIGITAL INTERFACE SPECIFICATIONS................................................................................ 6

TRANSMITTER CHARACTERISTICS ..................................................................................... 6

SWITCHING CHARACTERISTICS .......................................................................................... 7

SWITCHING CHARACTERISTICS - SERIAL AUDIO PORTS................................................. 8

SWITCHING CHARACTERISTICS - CONTROL PORT - SPI MODE...................................... 9

SWITCHING CHARACTERISTICS - CONTROL PORT - I²C MODE..................................... 10

2. TYPICAL CONNECTION DIAGRAM ...................................................................................... 11

3. GENERAL DESCRIPTION ..................................................................................................... 12

3.1 Audio Input/Output Ports ................................................................................................. 12

3.2 Serial Control Port ............................................................................................................ 12

3.3 Channel Status and User bit Memory .............................................................................. 12

3.4 AES3 and S/PDIF Standards Documents ........................................................................ 13

4. DATA I/O FLOW AND CLOCKING OPTIONS ....................................................................... 13

5. THREE-WIRE SERIAL AUDIO PORTS ................................................................................. 15

6. AES3 RECEIVER .................................................................................................................... 16

6.1 OMCK System Clock Mode ............................................................................................. 16

6.2 PLL, Jitter Attenuation, and Varispeed ............................................................................ 16

6.3 Error Reporting and Hold Function .................................................................................. 16

6.4 Channel Status Data Handling ......................................................................................... 16

6.5 User Data Handling .......................................................................................................... 17

6.6 Non-Audio Auto Detection ............................................................................................... 17

7. AES3 TRANSMITTER ........................................................................................................... 18

7.1 Transmitted Frame and Channel Status Boundary Timing .............................................. 18

7.2 TXN and TXP Drivers ...................................................................................................... 18

8. MONO MODE OPERATION ................................................................................................... 19

8.1 Receiver Mono Mode ....................................................................................................... 19

8.2 Transmitter Mono Mode ................................................................................................... 19

9. CONTROL PORT DESCRIPTION AND TIMING .................................................................... 25

9.1 SPITM Mode .................................................................................................................... 25

9.2 I²C Mode .......................................................................................................................... 25

9.3 Interrupts .......................................................................................................................... 25

10. CONTROL PORT REGISTER SUMMARY ........................................................................... 27

10.1 Memory Address Pointer (MAP) ..................................................................................... 27

11. CONTROL PORT REGISTER BIT DEFINITIONS ................................................................ 28

11.1 Control 1 (01h) ................................................................................................................ 28

11.2 Control 2 (02h) ................................................................................................................ 28

11.3 Data Flow Control (03h).................................................................................................. 29

11.4 Clock Source Control (04h)............................................................................................. 30

11.5 Serial Audio Input Port Data Format (05h)...................................................................... 31

11.6 Serial Audio Output Port Data Format (06h)................................................................... 31

11.7 Interrupt 1 Status (07h) (Read Only)............................................................................... 32

11.8 Interrupt 2 Status (08h) (Read Only)............................................................................... 33

11.9 Interrupt 1 Mask (09h).....................................................................................................33

11.10 Interrupt 1 Mode MSB (0Ah) & Interrupt 1 Mode LSB (0Bh)......................................... 33

11.11 Interrupt 2 Mask (0Ch) .................................................................................................. 34

11.12 Interrupt 2 Mode MSB (0Dh) & Interrupt 2 Mode LSB (0Eh) ........................................ 34

11.13 Receiver Channel Status (0Fh) (Read Only) ................................................................ 34