Texas Instruments TMS320C64x DSP guide

Video Display Registers

Table 4–6. Video Display Status Register (VDSTAT) Field Descriptions

Bit	field†	symval†	Value	Description
31	Reserved	–	0	Reserved. The reserved bit location is always read as 0. A
				value written to this field has no effect.

30	FRMD			Frame displayed bit. Write 1 to clear the bit, a write of 0 has
				no effect.
		NONE	0	Complete frame has not been displayed.
		DISPLAYED	1	Complete frame has been displayed.

29	F2D			Field 2 displayed bit. Write 1 to clear the bit, a write of 0 has
				no effect.
		NONE	0	Field 2 has not been displayed.
		DISPLAYED	1	Field 2 has been displayed.

28	F1D			Field 1 displayed bit. Write 1 to clear the bit, a write of 0 has
				no effect.
		NONE	0	Field 1 has not been displayed.
		DISPLAYED	1	Field 1 has been displayed.

27–16	VDYPOS	OF(value)	0–FFFh	Current frame line counter (FLCOUNT) value. Index of the
				current line in the current field being displayed by the
				module.

15–14	Reserved	–	0	Reserved. The reserved bit location is always read as 0. A
				value written to this field has no effect.

13	VBLNK			Vertical blanking bit.
		EMPTY	0	Video display is not in a vertical-blanking interval.
		NOTEMPTY	1	Video display is in a vertical-blanking interval.

12	VDFLD			VDFLD bit indicates which field is currently being displayed.
				The VDFLD bit is updated at the start of the vertical blanking
				interval of the next field.
		FIELD1ACT	0	Field 1 is active.
		FIELD2ACT	1	Field 2 is active.

11–0	VDXPOS	OF(value)	0–FFFh	Current frame pixel counter (FPCOUNT) value. Index of the
				most recently output pixel.

† For CSL implementation, use the notation VD_VDSTAT_field_symval

4-54

Video Display Port

SPRU629

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.

Texas Instruments TMS320C64x DSP manual Video Display Status Register Vdstat Field Descriptions

Models: TMS320C64x DSP

Table 4–6. Video Display Status Register (VDSTAT) Field Descriptions

Bit

field†

Value

OF(value)

VBLNK

EMPTY

OF(value)

TMS320C64x DSP specifications