Video Memory - Texas Instruments Extensa 60x Series Maintenance Manual

LOW POWER CONSUMPTION
The C&T65550 employs a variety of advanced power management features to reduce power consumption
of the display sub-system and extend battery life. Although optimized for 3.3V operation, The C&T65550
controller's internal logic. memory interface, bus interface, and panel interfaces can he independently
configured to operate at either 3.3V or 5V.
SOFTWARE COMPATIBILITY/FLEXIBILITY
The C&T65550 are fully compatible with VGA at the register, and BIOS levels. CHIPS and third-party
vendors supply fully VGA-compatible BIOS, end-user utilities and drivers for common application
programs
Pin names in parentheses (...) indicate alternate functions.
A simplified block diagram of the C&T65550 is shown in Figure 4-8.
Video
Capture Scaling
Port
Capture
PCI Bus

Video Memory

Memory Controller
Bus Interface
Figure 4-8 C&T65550 Simplified Block Diagram
64-bit
Graphics
Engine
YUV to RGB
Color Key Zoom
Theory of Operation 4-17
Analog
RGB
Digital
RGB