 |
Os motores de busca de Datasheet de Componentes eletrônicos |
|
|
Os motores de busca de Datasheet de Componentes eletrônicos |
|
RIVA128 Folha de dados(PDF) 55 Page - STMicroelectronics |
|
||||||||||||||||||||||||||||||
RIVA128 Folha de dados(HTML) 55 Page - STMicroelectronics |
|
|
55 / 77 page  128-BIT 3D MULTIMEDIA ACCELERATOR RIVA 128 55/77 11.6 TV OUTPUT SUPPORT Reference clock options The RIVA 128 supports two synthesizer reference clock frequencies; 13.5MHz and 14.31818MHz. The reference clock frequency is determined by a crystal or reference clock connected to the XTA- LIN and XTALOUT pins. Where TV-out is support- ed, XTALOUT should be driven by a 13.5MHz ref- erence clock derived from an external NTSC/PAL clock source as illustrated in Figure 59. The clock frequency should match the power-on configura- tion setting described in Section 10, page 49. PAL/NTSC TV interface The RIVA 128 supports TV output through an ex- ternal Analog Devices AD722 PAL/NTSC RGB encoder chip as shown in Figure 59. A MicroClock MK2715 NTSC/PAL clock chip provides a com- mon source for synchronization of the pixel and subcarrier clocks. In TV output modes the RIVA 128 XTALOUT pin must be externally driven from the MK2715 reference clock output, with XTALIN tied to GND. The MK2715 requires a number of external com- ponents for proper operation. For crystal input a parallel resonant 13.5000MHz crystal is recom- mended, with a frequency tolerance of 50ppm or better. Capacitors should be connected from X1 and X2 to GND as shown in Figure 59. Alternative- ly a clock input (e.g. ClockCan) can be connected to X1, leaving X2 disconnected. Further details are given in the MK2715 datasheet [8]. Figure 59. TV output implementation 75 Ω 75 Ω 75 Ω RIVA 128 R G B VIDHSYNC AD722 TV RGB Encoder RIN GIN BIN HSYNC FIN YOUT COUT CVOUT 220 µF 220 µF 220 µF 75 Ω MK2715 NTSC/PAL Clock Source 33 Ω 4XCLK REFOUT XTALOUT XTALIN 33 Ω 330 Ω 220 Ω 5V 27pF 27pF 13.50000MHz crystal X1/ICLK X2 |
Nº de peça semelhante - RIVA128 |
|
Descrição semelhante - RIVA128 |
|
|
Ligação URL |
| Privacy Policy |
| ALLDATASHEETPT.COM |
| ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes 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 |
Portuguese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
