Tickct

Video Capture Registers

3.13.20 TSI System Time Clock Ticks Interrupt Register (TSITICKS)

The transport stream interface system time clock ticks interrupt register (TSITICKS) is used to generate an interrupt after a certain number of ticks of the 27-MHz system time clock. When the TICKCT value is set to X and the TCKEN bit in TSICTL is set, the TICK bit in VPIS is set every X + 1 STCLK cycles. Note that the tick interrupt counter and comparison logic function are separate from the PCR logic and always count STCLK cycles regardless of the value of the CTMODE bit in TSICTL. TSITICKS is shown in Figure 3–48 and described in Table 3–33.

A write to TSITICKS resets the tick counter 0. Whenever the tick counter reaches the TICKCT value, the TICK bit in VPIS is set and the counter resets to 0.

To prevent inaccurate comparisons caused by changing register bits, the soft- ware should disable the tick count interrupt (clear the TCKEN bit in TSICTL) prior to writing to TSITICKS.

Figure 3–48. TSI System Time Clock Ticks Interrupt Register (TSITICKS)

R/W-0

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

Table 3–33. TSI System Time Clock Ticks Interrupt Register (TSITICKS) Field Descriptions

					Description
Bit	Field	symval†	Value	BT.656, Y/C Mode,	TSI Mode
Bit	Field	symval†	Value	or Raw Data Mode	TSI Mode
31–0	TICKCT	OF(value)	0–FFFF FFFFh	Not used.	Contains the number of ticks of the
					27-MHz system time clock required
					to generate a tick count interrupt.

† For CSL implementation, use the notation VP_TSITICKS_TICKCT_symval

3-82

Video Capture 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.

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Texas Instruments TMS320C64x DSP TSI System Time Clock Ticks Interrupt Register Tsiticks, Tickct

Models: TMS320C64x DSP

3.13.20 TSI System Time Clock Ticks Interrupt Register (TSITICKS)

Figure 3–48. TSI System Time Clock Ticks Interrupt Register (TSITICKS)

TICKCT

Bit

BT.656, Y/C Mode,

OF(value)

TMS320C64x DSP specifications