cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 9

• Manufacturer Part Number: cx25870
• Description: Video Encoder With Adaptive Flicker Filtering And Hdtv Output
• Manufacturer: Conexant Systems, Inc.

CX25870/871
Flicker-Free Video Encoder with Ultrascale Technology
List of Figures
100381B
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Pinout Diagram for CX25870/871 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Flicker Filter Control Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
CX25870/871 Encoder Core Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Allowable Overscan Compensation Ratios for Dual Display, 800x600 Input/NTSC Output 1-15
Operating the CX25870/871 in Master Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Operating the CX25870/871 in Pseudo-Master Interface . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Operating the CX25870/871 in Slave Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Decimation Filter at Fs=27 MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
Windows Desktop Image From Encoder Without Overscan Compensation. . . . . . . . . . . . 1-33
Windows Desktop Image From CX25870 With Overscan Compensation . . . . . . . . . . . . . 1-34
Interlaced 525-Line (NTSC) Video Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-43
Interlaced 525-Line (PAL-M) Video Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-44
Interlaced 625-Line (PAL-B, D, G, H, I, Nc) Video Timing (Fields 1–4) . . . . . . . . . . . . . . . 1-45
Interlaced 625-Line (PAL-B, D, G, H, I, Nc) Video Timing (Fields 5–8) . . . . . . . . . . . . . . . 1-46
Interlaced 625-Line (PAL-N) Video Timing (Fields 1–4) . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47
Interlaced 625-Line (PAL-N) Video Timing (Fields 5–8) . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48
Noninterlaced 262-Line (NTSC) Video Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-49
Noninterlaced 262-Line (PAL-M) Video Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-49
Noninterlaced 312-Line (PAL-B, D, G, H, I, N, Nc) Video Timing. . . . . . . . . . . . . . . . . . . . 1-49
Interlaced 625-Line (SECAM-B, D, G, K, K1, L, M) Video Timing (Fields 1-4) . . . . . . . . . . 1-50
FIELD Pin Output Timing Diagram (NTSC-M, J, 4.43). . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53
FIELD Pin Output Timing Diagram (PAL-B, D, G, H, I, Nc) . . . . . . . . . . . . . . . . . . . . . . . . 1-54
Typical WSS Analog Waveform (NTSC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-57
Luminance Upsampling Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-59
Text Sharpness (Luminance Upsampling) Filter with Peaking Options . . . . . . . . . . . . . . . 1-59
Close-Up of Text Sharpness (Luminance Upsampling )Filter with Peaking and Reduction Op-
tions 1-59
Text Sharpness (Luminance Peaking) Filter Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-60
Chrominance Filter (CHROMA_BW = 0) - default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-60
Chrominance Wide Bandwidth Filter (CHROMA_BW = 1) . . . . . . . . . . . . . . . . . . . . . . . . . 1-60
SECAM High Frequency Pre-emphasis Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-61
Composite and S-Video Format (Internal Colorbars). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-62
CX25870/871 Connection to CCIR656-Compatible Master Device . . . . . . . . . . . . . . . . . . 1-63
DVD Playback Utilizing Graphics Controller for Color-Space and Progressive Scan Conversion
CX25870 Driving a Type I SCART Connector (EN 50-049 and IEC 933-1 Compliant) . . . . 1-78
CX25870 Driving a Type II SCART Connector (Y/C and BBC SCART Compliant). . . . . . . . 1-79
YPR PB Component Video Signals using 100/0/100/0 Color Bars as the Digital Input Signal
(Courtesy– EIA-770.2-A standard, page 8 and EIA-770.1 standard) 1-81
1-67
Conexant
List of Figures
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