Video Display Mode Selection

4.1.4External Sync Operation

The video display module may be synchronized with an external video source using external sync signals. VCTL1 may be configured as an external horizon- tal sync input. When the external HSYNC is asserted, FPCOUNT is loaded with the HRLD value and VCCOUNT is loaded with the CRLD value. VCTL2 may be configured as an external vertical sync input. When the external VSYNC is asserted during field 1, FLCOUNT is loaded with the VRLD value. Field determination is made using either VCTL3 as an external FLD input or by field detect logic using the VSYNC and HSYNC inputs.

4.1.5Port Sync Operation

The video display module may be synchronized with the video display module of another video port on the device. This mode is provided to enable the output of 24-bit or 30-bit RGB data. (for example, 8 bits of R and 8 bits of G on video port 0 operating in dual-channel synced 8-bit raw mode, and 8 bits of B on video port 1 operating in 8-bit raw mode with VP1 synced to VP0.) The slave port must have the same VCLKIN and programmed register values as the master port. The master port provides the control signals necessary to reset the slave port counters so that they maintain synchronization. Each video port may only synchronize to the previous video port (the one with a lower number). An example for a three port device is shown in Figure 4–7.

Figure 4–7. Video Display Module Synchronization Chain

Video port 0

display

Can sync to

Video port 1

display

Can sync to

Video port 2

display

4-8

Video Display Port

SPRU629

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Texas Instruments TMS320C64x DSP manual External Sync Operation, Port Sync Operation
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TMS320C64x DSP specifications

The TMS320C64x DSP family from Texas Instruments represents a significant milestone in the realm of digital signal processing. Launched as part of the C6000 series, the C64x DSPs are designed for high-performance applications requiring intensive computational capabilities, such as telecommunications, audio processing, video processing, and industrial control systems.

One of the standout features of the TMS320C64x DSP is its VLIW (Very Long Instruction Word) architecture, which allows for an exceptionally high level of parallelism. This architecture enables multiple instructions to be executed simultaneously, boosting the overall throughput and allowing for complex data processing tasks to be completed more quickly than with conventional DSPs.

The C64x DSPs also boast an impressive clock frequency range, typically up to 1 GHz, delivering substantial computational power for real-time processing goals. Additionally, these processors feature extensive on-chip memory, including L1 and L2 cache, which significantly enhances data access speeds and helps reduce bottlenecks during high-demand processing tasks.

Another key characteristic of the TMS320C64x family is its support for advanced instruction sets optimized for specific applications. These include SIMD (Single Instruction, Multiple Data) capabilities, allowing for efficient handling of large datasets often involved in multimedia processing or complex signal manipulation.

For connectivity, these DSPs often integrate advanced interfaces such as EMIF (External Memory Interface) and McBSP (Multichannel Buffered Serial Port), facilitating seamless interaction with a variety of peripheral devices. This ensures that the DSP can suit different application needs and integrate well into various system architectures.

Texas Instruments emphasizes low power consumption with the C64x DSPs, making them ideal for portable or energy-sensitive applications. Advanced power management techniques and technologies, such as dynamic voltage and frequency scaling, are incorporated to further enhance energy efficiency without compromising performance.

In summary, the Texas Instruments TMS320C64x DSP family stands out due to its high-performance capabilities driven by a VLIW architecture, high clock speeds, extensive memory options, a rich instruction set, and advanced connectivity features, all while maintaining power efficiency. These characteristics make it an exceptional choice for developers looking to integrate robust digital signal processing into their applications, whether in telecommunications, audio and video processing, or embedded control systems.
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