STV8237 datasheet(4/156 Pages) STMICROELECTRONICS

4 / 156 page

STV82x7

4/156

4.15

Beeper ................................................................................................................................ 39

4.16

Internal Audio/Video Delay (Lip Sync) ............................................................................... 40

Chapter 5

Analog Audio Matrix (In / Out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Chapter 6

I²S Interface (In / Out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

6.1

I²S Inputs ............................................................................................................................ 42

6.2

I²S Output ........................................................................................................................... 44

Chapter 7

S/PDIF Input/Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Chapter 8

Power Supply Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

8.1

Standby Mode (Loop-through mode) ................................................................................. 47

8.2

Power on Reset .................................................................................................................. 47

Chapter 9

Additional Controls and Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

9.1

Headphone Detection ........................................................................................................ 48

9.2

IRQ Generation .................................................................................................................. 48

9.3

I²C Bus Expander ............................................................................................................... 48

Chapter 10

STV82x7 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Chapter 11

I²C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

11.1

I²C Address and Protocol ...................................................................................................50

11.2

Start-up and Configuration Change Procedure .................................................................. 51

11.3

Process Flow during Patch Loading and DSP Initialization ............................................... 53

11.4

Input Configuration Change ............................................................................................... 54

Chapter 12

Register List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

12.1

I²C Register Map ................................................................................................................ 56

12.2

STV82x7 General Control Registers .................................................................................. 62

12.3

Clocking 1 .......................................................................................................................... 64

12.4

Demodulator ....................................................................................................................... 66

12.5

Demodulator Channel 1 ..................................................................................................... 69

12.6

Demodulator Channel 2 ..................................................................................................... 73

12.7

NICAM Registers ............................................................................................................... 78

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