Zynq UltraScale+ Devices Register Reference > Module Summary > USB3_XHCI Module > GGPIO (USB3_XHCI) Register

GGPIO (USB3_XHCI) Register

GGPIO (USB3_XHCI) Register Description

Register NameGGPIO
Relative Address0x000000C124
Absolute Address 0x00FE20C124 (USB3_0_XHCI)
0x00FE30C124 (USB3_1_XHCI)
Width32
TypemixedMixed types. See bit-field details.
Reset Value0x00000000
DescriptionGlobal General Purpose Input/Output Register
The application can use this register for general purpose input and output ports or for debugging.

GGPIO (USB3_XHCI) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
GPO31:16rwNormal read/write0x0General Purpose Output
This fields value is driven out on the gp_out[15:0] core output port.
GPI15:0roRead-only0x0General Purpose Input
This fields read value reflects the gp_in[15:0] core input value.
Note: Register bit-bash test should not check for reset value of this field since its not predictable; depends on the gp_in port.