PDIR22, VCTL3IN, VCTL3OUT | Texas Instruments TMS320C64x DSP

GPIO Registers

5.1.4Video Port Pin Direction Register (PDIR)

The video port pin direction register (PDIR) is shown in Figure 5–4 and described in Table 5–5. The PDIR controls the direction of IO pins in the video port for those pins set by PFUNC. If a bit is set to 1, the relevant pin or pin group acts as an output. If a bit is cleared to 0, the pin or pin group functions as an input. The PDIR settings do not affect pins where the corresponding PFUNC bit is not set.

Figure 5–4. Video Port Pin Direction Register (PDIR)

31								24
			Reserved

				R-0
23	22	21	20	19			17	16

Reserved	PDIR22	PDIR21	PDIR20			Reserved		PDIR16

R-0	R/W-0	R/W-0	R/W-0			R-0		R/W-0
15		13	12	11		10	9	8

	Reserved		PDIR12		Reserved	PDIR10	Reserved	PDIR8

	R-0		R/W-0		R-0	R/W-0	R-0	R/W-0
7		5	4	3			1	0

	Reserved		PDIR4			Reserved		PDIR0

	R-0		R/W-0			R-0		R/W-0

Legend: R = Read only; R/W = Read/Write; -n= value after reset

Table 5–5. Video Port Pin Direction Register (PDIR) Field Descriptions

Bit	field†	symval†	Value	Description
31–23	Reserved	–	0	Reserved. The reserved bit location is always read as 0.
				A value written to this field has no effect.

22	PDIR22			PDIR22 bit controls the direction of the VCTL3 pin.
		VCTL3IN	0	Pin functions as input.
		VCTL3OUT	1	Pin functions as output.

† For CSL implementation, use the notation VP_PDIR_field_symval

5-8

General Purpose I/O Operation

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 Port Pin Direction Register Pdir, PDIR22, VCTL3IN

Models: TMS320C64x DSP

5.1.4Video Port Pin Direction Register (PDIR)

Figure 5–4. Video Port Pin Direction Register (PDIR)

Table 5–5. Video Port Pin Direction Register (PDIR) Field Descriptions

Bit

field†

PDIR22

VCTL3IN

VCTL3OUT

TMS320C64x DSP specifications