Texas Instruments TMS320C64x DSP Benutzerhandbuch
Video Capture Registers
Video Capture Port
3-78
SPRU629
3.13.16
TSI System Time Clock Compare LSB Register (TSISTCMPL)
The transport stream interface system time clock compare LSB register
(TSISTCMPL) is used to generate an interrupt at some absolute time based
on the STC. TSISTCMPL holds the 32 least-significant bits (LSBs) of the
absolute time compare (ATC). Whenever the value in TSISTCMPL and
TSISTCMPM match the unmasked bits of the time kept by the STC hardware
counter and the STEN bit in TSICTL is set, the STC bit in VPIS is set.
TSISTCMPL is shown in Figure 3–44 and described in Table 3–29.
(TSISTCMPL) is used to generate an interrupt at some absolute time based
on the STC. TSISTCMPL holds the 32 least-significant bits (LSBs) of the
absolute time compare (ATC). Whenever the value in TSISTCMPL and
TSISTCMPM match the unmasked bits of the time kept by the STC hardware
counter and the STEN bit in TSICTL is set, the STC bit in VPIS is set.
TSISTCMPL is shown in Figure 3–44 and described in Table 3–29.
To prevent inaccurate comparisons caused by changing register bits, the
software should disable the system time clock interrupt (clear the STEN bit in
TSICTL) prior to writing to TSISTCMPL.
software should disable the system time clock interrupt (clear the STEN bit in
TSICTL) prior to writing to TSISTCMPL.
Figure 3–44. TSI System Time Clock Compare LSB Register (TSISTCMPL)
31
0
ATC
R/W-0
Legend: R/W = Read/Write; -n = value after reset
Table 3–29. TSI System Time Clock Compare LSB Register (TSISTCMPL)
Field Descriptions
Description
Bit
Field
symval
†
Value
BT.656, Y/C Mode,
or Raw Data Mode
or Raw Data Mode
TSI Mode
31–0
ATC
OF(value)
0–FFFF FFFFh
Not used.
Contains the 32 LSBs of the
absolute time compare.
absolute time compare.
† For CSL implementation, use the notation VP_TSISTCMPL_ATC_symval