EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 590
GPIO_SIMPLE
0xE0001100
10.22.1 GPIO_SIMPLE (continued)
26:24 INTRMODE[2:0] Interrupt mode
0 No interrupt
1 Interrupt on positive edge
2 Interrupt on negative edge
3 Interrupt on any edge
4 Interrupt when pin is low
5 Interrupt when pin is high
6-7 Reserved
6 INPUT_EN 0 Input stage is disabled
1 Input stage is enabled, value is readable in IN_VALUE
5 DRIVE_HI_EN Output driver enable when OUT_VALUE=1
0 Output driver is tristated
1 Output driver is active (weak/strong is determined in IO Matrix)
4 DRIVE_LO_EN Output driver enable when OUT_VALUE=0
0 Output driver is tristated
1 Output driver is active (weak/strong is determined in IO Matrix)
1IN_VALUE Present input measurement
0 Low
1High
0 OUT_VALUE Output value used for output drive (if DRIVE_EN=1)
0 Driven Low
1 Driven High