PRODUCT SPECIFICATION
TMC22x5yA
List of Tables and Figures
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
Figure 1.
Figure 2.
Figure 3.
TMC22x5yA Decoder Family ................. 4
Normalized Subcarrier Frequency
as a Function of Pixel Data Rates....... 45
Comb Filter Architecture ..................... 48
Simple Example of an Adaptive
Comb Filter Architecture ..................... 48
Adaption Modes ................................... 51
XLUT Input Selection ........................... 52
XLUT Output Function ......................... 52
XLUT Special Function Definitions..... 52
PAL-B,G,H,I Bruch
Blanking Sequence .............................. 53
PAL-M Bruch Blanking Sequence ...... 54
Blanking Level Selection ..................... 55
Adaptive Notch Threshold Control..... 55
Matrix Limiters...................................... 57
Output Format ...................................... 58
NTSC Field and Line Numbering ........ 59
PAL B,G,H,I Field and
Line Numbering .................................... 59
PAL M Field and Line Numbering ....... 59
Vertical Blanking Period ...................... 60
Vertical Burst Blanking Period............ 60
Table of Line Idents, LID[4:0] .............. 60
Timing Offsets ...................................... 61
PAL VINDO operation .......................... 63
Pixel Grab Control................................ 66
Parallel Port Control............................. 67
Serial Port Addresses .......................... 69
Figure 11. Input Processor .................................... 44
Figure 12. Complementary Bandsplit Filter ......... 44
Figure 13. Bandsplit Filter, Full Frequency
Response .............................................. 45
Figure 14. Bandsplit Filter, Passband
Response .............................................. 45
Figure 15. Block Diagram of Comb Filter Input ... 46
Figure 16. Signal Flow Around the Adaptive
Comb Filter ........................................... 47
Figure 17. Example of a Comb Fail Using a NTSC
Two Line Comb Filter........................... 49
Figure 18. Generation of Upper and Lower Comb
Fail Signals ........................................... 50
Figure 19. Comb Filter Selection .......................... 51
Figure 20. XLUT Input Selection ........................... 52
Figure 21. Block Diagram of Digital Burst
Locked Loop ......................................... 53
Figure 22. Gaussian Low Pass Filters.................. 54
Figure 23. Gaussian LPF Passband Detail........... 54
Figure 24. Output Processor Block Diagram....... 55
Figure 25. Adaptive Notch Filters ......................... 56
Figure 26. Luminance Notch Filter ....................... 56
Figure 27. Horizontal Timing ................................. 61
Figure 28. External HSYNC and VSYNC Timing
for Field 1(3, 5, or 7) ............................. 62
Figure 29. NTSC Vertical Interval.......................... 62
Figure 30. PAL-B,G,H,I,N Vertical Interval............ 62
Figure 31. PAL-M Vertical Interval ........................ 63
Figure 32. Pixel Grab Locations............................ 64
Figure 33. Relationship Between Pixel Count
and Pixel Grab Value............................ 65
Figure 34. Microprocessor Parallel Port –
Write Timing.......................................... 66
Figure 35. Microprocessor Parallel Port –
Read Timing.......................................... 68
Figure 36. Serial Port Read/Write Timing............. 69
Figure 37. Serial Interface –
Typical Byte Transfer........................... 70
Figure 38. Equivalent Digital Input Circuit ........... 71
Figure 39. Equivalent Digital Output .................... 71
Figure 40. Threshold Levels for Three-state........ 71
Figure 41. Input Timing Parameters ..................... 72
Figure 42. Functional Block Diagram of the
TMC22x5yA G/Y, B/U, and R/V Output
Stage...................................................... 73
Figure 43. Output Timing Parameters .................. 74
Logic Symbol.......................................... 4
Pixel Data Format ................................... 4
Fundamental Decoder
Block Diagram ...................................... 40
Figure 4. Comparison of the Frequency
Spectrum of NTSC and PAL
Composite Video Signals .................... 40
Figure 5. Examples of Notch and Bandpass
Filters..................................................... 41
Figure 6. ............................................................... 41
Figure 7. Chrominance Vector Rotation in
PAL and NTSC ...................................... 42
Figure 8. Chrominance Vector Rotation Over
4 Fields in NTSC ................................... 42
Figure 9. Chrominance Vector Rotation Over
4 Fields in PAL...................................... 42
Figure 10. TMC22x5yA Line Based Comb
Filter Architecture ................................ 43
REV. 1.0.0 2/4/03
3
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
