Impulse 8018 - Manual (Page 12)

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- 10 - PIO-24.LPCI User Manual
Programming the PIO-24.LPCI
Presetting an Output Port
Each port has an output register associated with it. This register may be written and
retains its value whether the port is configured as an input or an output. To preset the
value of an output port the program should write to the port when it is configured as
an input then configure it as an output.
Writing the Outputs
The outputs are active true. Writing a one (1) corresponds to 5V while writing a zero
(0) corresponds to 0V, at the output.
Register Description
Address Mode D7 D6 D5 D4 D3 D2 D1 D0
Base+0 RD/WR PA1D7 PA1D6 PA1D5 PA1D4 PA1D3 PA1D2 PA1D1 PA1D0
Base+1 RD/WR PB1D7 PB1D6 PB1D5 PB1D4 PB1D3 PB1D2 PB1D1 PB1D0
Base+2 RD/WR PC1D7 PC1D6 PC1D5 PC1D4 PC1D3 PC1D2 PC1D1 PC1D0
Base+3 WR CW1D7 0 0 CW1D4 CW1D3 CW1D2 CW1D1 CW1D0
Base+4 RD/WR 0 0 0 0 0 IRQEN1 IRQC11 IRQC10
Base+5 RD 0 0 0 0 0 0 0 IRQST1
0 = Not Used