BT261 Brooktree, BT261 Datasheet - Page 6

• Manufacturer Part Number: BT261
• Description: 30 Mhz Pixel Clock Monolithic CMOS HSYNC Line Lock Controller
• Manufacturer: Brooktree

L
v
IST OF
F
List of Figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10. Operation of the Bt261 with the 74HC4046A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 11. Interfacing the Bt218. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 12. Interfacing to the Bt252 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 13. Interfacing to the Bt254. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
IGURES
Operation of FIELD and CAPTURE Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
External VCO Configuration.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
imized Block Diagrams Corresponding to Waveforms in Figure 5 12
Phase-Comparator State Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Examples of Phase Comparator Operation With Different Types of Error and Different Im-
plementations of Phase Limiting and Noise Gating 14
PLL Performance Can Be Monitored Using SR05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Pixel Clock Output Timing When Generated From Higher Speed Oscillator . . . . . . . . . . 17
Bt261 Pinout Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Bt261 Suggested Register Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
(a) Actual Gate-Level Implementation of Phase Limiting and Noise Gating (b,c, and d) Min-
L261_H
30 MHz Pixel Clock Monolithic CMOS HSYNC Line Lock Controller
Brooktree
Bt261
®