Datasheet

TVP5146M2
www.ti.com SLES141H –JULY 2005– REVISED FEBRUARY 2012
Contents
1 Introduction ........................................................................................................................ 9
1.1 Features ...................................................................................................................... 9
1.2 Description ................................................................................................................. 10
1.3 Applications ................................................................................................................ 11
1.4 Related Products .......................................................................................................... 11
1.5 Document Conventions ................................................................................................... 11
1.6 Ordering Information ...................................................................................................... 11
1.7 Functional Block Diagram ................................................................................................ 12
1.8 Terminal Assignments .................................................................................................... 13
1.9 Terminal Functions ........................................................................................................ 14
2 Functional Description ....................................................................................................... 16
2.1 Analog Processing and A/D Converters ................................................................................ 16
2.1.1 Video Input Switch Control .................................................................................... 17
2.1.2 Analog Input Clamping ......................................................................................... 17
2.1.3 Automatic Gain Control ........................................................................................ 17
2.1.4 ADCs ............................................................................................................. 17
2.2 Digital Video Processing .................................................................................................. 17
2.2.1 2x Decimation Filter ............................................................................................ 18
2.2.2 Composite Processor .......................................................................................... 18
2.2.2.1 Color Low-Pass Filter .............................................................................. 20
2.2.2.2 Y/C Separation ..................................................................................... 21
2.2.3 Luminance Processing ......................................................................................... 22
2.2.4 Color Transient Improvement (CTI) .......................................................................... 22
2.2.5 Component Video Processor ................................................................................. 23
2.2.6 Color Space Conversion ....................................................................................... 23
2.3 Clock Circuits .............................................................................................................. 23
2.4 Real-Time Control (RTC) ................................................................................................. 24
2.5 Output Formatter .......................................................................................................... 25
2.5.1 Fast Switches for SCART ..................................................................................... 26
2.5.2 Separate Syncs ................................................................................................. 26
2.5.3 Embedded Syncs ............................................................................................... 31
2.6 I
2
C Host Interface .......................................................................................................... 32
2.6.1 Reset and I
2
C Bus Address Selection ....................................................................... 32
2.6.2 I
2
C Operation .................................................................................................... 32
2.6.3 VBUS Access ................................................................................................... 33
2.6.4 I
2
C Timing Requirements ...................................................................................... 34
2.7 VBI Data Processor ....................................................................................................... 34
2.7.1 VBI FIFO and Ancillary Data in Video Stream .............................................................. 35
2.7.2 VBI Raw Data Output .......................................................................................... 36
2.8 Reset and Initialization .................................................................................................... 36
2.9 Adjusting External Syncs ................................................................................................. 37
2.10 Internal Control Registers ................................................................................................ 38
2.11 Register Definitions ........................................................................................................ 42
2.12 VBUS Register Definitions ............................................................................................... 88
3 Electrical Specifications ..................................................................................................... 93
2 Contents Copyright © 2005–2012, Texas Instruments Incorporated