Interpolated Control (VIC) Port Reference Guide

GPIO Registers
5-13General Purpose I/O OperationSPRU629
5.1.6 Video Port Pin Data Output Register (PDOUT)
The video port pin data output register (PDOUT) is shown in Figure 5–6 and
described in Table 5–7. The bits of PDOUT determine the value driven on the
corresponding GPIO pin, if the pin is configured as an output. Writes do not
affect pins not configured as GPIO outputs. The bits in PDOUT are set or
cleared by writing to this register directly. A read of PDOUT returns the value
of the register not the value at the pin (that might be configured as an input).
An alternative way to set bits in PDOUT is to write a 1 to the corresponding bit
of PDSET. An alternative way to clear bits in PDOUT is to write a 1 to the corre-
sponding bit of PDCLR.
PDOUT has these aliases:
- PDSET — writing a 1 to a bit in PDSET sets the corresponding bit in
PDOUT to 1; writing a 0 has no effect and keeps the bits in PDOUT
unchanged.
- PDCLR — writing a 1 to a bit in PDCLR clears the corresponding bit in
PDOUT to 0; writing a 0 has no effect and keeps the bits in PDOUT
unchanged.
Figure 5–6. Video Port Pin Data Output Register (PDOUT)
31 24
Reserved
R-0
23 22 21 20 19 18 17 16
Reserved
PDOUT22 PDOUT21 PDOUT20 PDOUT19 PDOUT18 PDOUT17 PDOUT16
R-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
15 14 13 12 11 10 9 8
PDOUT15
PDOUT14 PDOUT13 PDOUT12 PDOUT11 PDOUT10 PDOUT9 PDOUT8
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
76543210
PDOUT7
PDOUT6 PDOUT5 PDOUT4 PDOUT3 PDOUT2 PDOUT1 PDOUT0
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
Legend: R = Read only; R/W = Read/Write; -n = value after reset