 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CS4954 Datasheet(PDF) 18 Page - Cirrus Logic |
|
||||||||||||||||||||||||||||||
CS4954 Datasheet(HTML) 18 Page - Cirrus Logic |
|
|
18 / 60 page  CS4954 CS4955 18 DS278F6 VSYNC stays low for 2.5 line-times and transitions high with the beginning of line 315. Video input on the V [7:0] pins is expected between line 336 through line 622. 5.2.7 Progressive Scan The CS4954/5 supports a pseudo-progessive scan mode for which “odd” and “even” numbered line information is presented in “odd” numbered line positions by varying the vertical blanking timing. This preserves precise MPEG-2 frame rates of 30 and 25 frames per second. This mode is in contrast to other digital video encoders, which commonly support progressive scan by repetitively displaying a 262 line field (524/525 lines for NTSC). The common method is flawed: over time, the output display rate will overrun a system-clock-locked MPEG-2 decompressor and display a field twice every 8.75 seconds. 5.2.8 NTSC Progressive Scan VSYNC will transition low at line four to begin field one and will remain low for three lines or 2574 pixel cycles (858 × 3). NTSC interlaced tim- ing is illustrated in Figure 9. In this mode, the CS4954/5 expects digital video input at the V [7:0] pins for 240 lines beginning on active video line 22 and continuing through line 261. NTSC Vertical Timing (odd field) Line HSYNC VSYNC FIELD 3 4 5 6 7 8 9 10 NTSC Vertical Timing (even field) PAL Vertical Timing (odd field) PAL Vertical Timing (even field) 264 265 266 267 268 269 270 271 265 1 2 3 4 5 6 7 311 312 313 314 315 316 317 318 Line HSYNC VSYNC FIELD Line HSYNC VSYNC FIELD Line HSYNC VSYNC FIELD Figure 6. Vertical Timing |
Similar Part No. - CS4954 |
|
Similar Description - CS4954 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
