Texas Instruments TMS320C64x DSP - Manual (Page 248)

GPIO Registers
5-7 General Purpose I/O Operation SPRU629
Table 5–4. Video Port Pin Function Register (PFUNC) Field Descriptions (Continued)
Bit Description Value symval † field †
20 PFUNC20 PFUNC20 bit determines if VCTL1 pin functions as GPIO.
NORMAL 0 Pin functions normally.
VCTL1 1 Pin functions as GPIO pin.
19–11 Reserved – 0 Reserved. The reserved bit location is always read as 0. A
value written to this field has no effect.
10 PFUNC10 PFUNC10 bit determines if VDATA[19–10] pins function as
GPIO.
NORMAL 0 Pins function normally.
VDATA10TO19 1 Pins function as GPIO pin.
9–1 Reserved – 0 Reserved. The reserved bit location is always read as 0. A
value written to this field has no effect.
0 PFUNC0 PFUNC0 bit determines if VDATA[9–0] pins function as
GPIO.
NORMAL 0 Pins function normally.
VDATA0TO9 1 Pins function as GPIO pin.
† For CSL implementation, use the notation VP_PFUNC_field_symval