Texas-instruments TMS320C64x DSP Manual de usuario Pagina 228

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Video Display Registers
4-83Video Display PortSPRU629
4.12.21 Video Display Counter Reload Register (VDRELOAD)
When external horizontal or vertical synchronization are used, the video
display counter reload register (VDRELOAD) determines what values are
loaded into the counters when an external sync is activated. The VDRELOAD
is shown in Figure 459 and described in Table 426.
Figure 459. Video Display Counter Reload Register (VDRELOAD)
31 28 27 16
Reserved
VRLD
R-0 R/W-0
15 12 11 0
CRLD HRLD
R/W-0 R/W-0
Legend: R = Read only; R/W = Read/Write; -n = value after reset
Table 426. Video Display Counter Reload Register (VDRELOAD) Field Descriptions
Bit field
symval
Value Description
3128 Reserved 0 Reserved. The reserved bit location is always read as 0. A
value written to this field has no effect.
2716 VRLD OF(value) 0FFFh Value loaded into frame line counter (FLCOUNT) when
external VSYNC occurs.
1512 CRLD OF(value) 0Fh Value loaded into video clock counter (VCCOUNT) when
external HSYNC occurs.
110 HRLD OF(value) 0FFFh Value loaded into frame pixel counter (FPCOUNT) when
external HSYNC occurs.
For CSL implementation, use the notation VP_VDRELOAD_field_symval
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