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Texas Instruments TMS320C64x DSP Video Display Fifo Registers, Register BT.656 or Y/C Raw Data

Models: TMS320C64x DSP

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Video Display FIFO Registers

4.14 Video Display FIFO Registers

The display FIFO mapping registers are listed in Table 4–35. These registers provide DMA write access to the display FIFOs. These pseudo-registers should be mapped into DSP memory space rather than configuration register space in order to provide high-speed access. See the device-specific data- sheet for the memory address of these registers.

The function of the video display FIFO mapping registers is listed in Table 4–36.

Table 4–35. Video Display FIFO Registers

Acronym

Register Name

YDSTA

Y FIFO Destination Register A

CBDST

Cb FIFO Destination Register

CRDST

Cr FIFO Destination Register

YDSTB

Y FIFO Destination Register B

 

 

Table 4–36. Video Display FIFO Registers Function

 

Display Mode

Register

BT.656 or Y/C

Raw Data

 

 

 

YDSTx

Maps Y display FIFO into the

Maps data display buffer into

 

DSP memory.

the DSP memory.

CBDST

Maps Cb display FIFO into the

Not used.

 

DSP memory.

 

CRDST

Maps Cr display FIFO into the

Not used.

 

DSP memory.

 

 

 

 

In BT.656 or Y/C display mode, three DMAs move data from the DSP memory to Y, Cb, and Cr display FIFOs by using the memory-mapped YDSTx, CBDST, and CRDST registers. The DMA transfers are triggered by the YEVT, CbEVT, and CrEVT events, respectively.

In raw display mode, one DMA channel moves data from the DSP memory to the Y display FIFO by using the memory-mapped YDSTx register. The DMA transfers are triggered by a YEVT event.

The video display FIFO registers are write-only locations. Reads of these addresses returns arbitrary values and do not affect the status of the display FIFOs.

4-96

Video Display Port

SPRU629

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Texas Instruments TMS320C64x DSP manual Video Display Fifo Registers Function, Register BT.656 or Y/C Raw Data
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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.