Texas-instruments TMS320C64x DSP Uživatelský manuál Strana 250

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GPIO Registers
5-9General Purpose I/O OperationSPRU629
Table 55. Video Port Pin Direction Register (PDIR) Field Descriptions (Continued)
Bit DescriptionValuesymval
field
21 PDIR21 PDIR21 bit controls the direction of the VCTL2 pin.
VCTL2IN 0 Pin functions as input.
VCTL2OUT 1 Pin functions as output.
20
PDIR20 PDIR20 bit controls the direction of the VCTL1 pin.
VCTL1IN 0 Pin functions as input.
VCTL1OUT 1 Pin functions as output.
1917
Reserved 0 Reserved. The reserved bit location is always read as 0.
A value written to this field has no effect.
16 PDIR16 PDIR16 bit controls the direction of the VDATA[1916]
pins.
VDATA16TO19IN 0 Pins function as input.
VDATA16TO19OUT 1 Pins function as output.
1513
Reserved 0 Reserved. The reserved bit location is always read as 0.
A value written to this field has no effect.
12 PDIR12 PDIR12 bit controls the direction of the VDATA[1512]
pins.
VDATA12TO15IN 0 Pins function as input.
VDATA12TO15OUT 1 Pins function as output.
11
Reserved 0 Reserved. The reserved bit location is always read as 0.
A value written to this field has no effect.
10 PDIR10 PDIR10 bit controls the direction of the VDATA[1110]
pins.
VDATA10TO11IN 0 Pins function as input.
VDATA10TO11OUT 1 Pins function as output.
9
Reserved 0 Reserved. The reserved bit location is always read as 0.
A value written to this field has no effect.
For CSL implementation, use the notation VP_PDIR_field_symval
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