Texas Instruments TMS320C64x DSP Benutzerhandbuch
Video Display Registers
Video Display Port
4-88
SPRU629
4.12.25
Video Display Vertical Interrupt Register (VDVINT)
The video display vertical interrupt register (VDVINT) controls the generation
of vertical interrupts in field 1 and field 2. The VDVINT is shown in Figure 4–64
and described in Table 4–30.
of vertical interrupts in field 1 and field 2. The VDVINT is shown in Figure 4–64
and described in Table 4–30.
An interrupt can be generated upon completion of the specified line in a field
(when FLCOUNT = VINTn). This allows the software to synchronize itself to
the frame or field. The interrupt can be programmed to occur in one, both, or
no fields using the VIF1 and VIF2 bits.
(when FLCOUNT = VINTn). This allows the software to synchronize itself to
the frame or field. The interrupt can be programmed to occur in one, both, or
no fields using the VIF1 and VIF2 bits.
Figure 4–64. Video Display Vertical Interrupt Register (VDVINT)
31
30
28
27
16
VIF2
Reserved
VINT2
R/W-0
R-0
R/W-0
15
14
12
11
0
VIF1
Reserved
VINT1
R/W-0
R-0
R/W-0
Legend: R = Read only; R/W = Read/Write; -n = value after reset
Table 4–30. Video Display Vertical Interrupt Register (VDVINT) Field Descriptions
Bit
field
†
symval
†
Value
Description
31
VIF2
Vertical interrupt (VINT) in field 2 enable bit.
DISABLE
0
Vertical interrupt (VINT) in field 2 is disabled.
ENABLE
1
Vertical interrupt (VINT) in field 2 is enabled.
30–28
Reserved
–
0
Reserved. The reserved bit location is always read as 0. A
value written to this field has no effect.
value written to this field has no effect.
27–16
VINT2
OF(value)
0–FFFh
Line where vertical interrupt (VINT) occurs, if VIF2 bit is set.
15
VIF1
Vertical interrupt (VINT) in field 1 enable bit.
DISABLE
0
Vertical interrupt (VINT) in field 1 is disabled.
ENABLE
1
Vertical interrupt (VINT) in field 1 is enabled.
14–12
Reserved
–
0
Reserved. The reserved bit location is always read as 0. A
value written to this field has no effect.
value written to this field has no effect.
11–0
VINT1
OF(value)
0–FFFh
Line where vertical interrupt (VINT) occurs, if VIF1 bit is set.
† For CSL implementation, use the notation VP_VDVINT_field_symval