Cypress EZ-USB FX3 User Manual

EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 276
GCTL_FREEZE
0xE0050010
10.5.4 GCTL_FREEZE
I/O Freeze Control Register
This register indicates the state of the I/Os in each power domain when GCTL_CONTROL.FREEZE_IO is asserted. It is in
the always-on power domain.
7:6 VIO4IO_FRZ[1:0] Frozen state of I/Os in the VIO4 domain.
5:4 VIO3IO_FRZ[1:0] Frozen state of I/Os in the VIO3 domain.
3:2 VIO2IO_FRZ[1:0] Frozen state of I/Os in the VIO2 domain.
1:0 VIO1IO_FRZ[1:0] Frozen state of I/Os in the VIO1 domain
0 Sample and hold state
1 High impedance
2 Drive 0 at full strength (outputs only)
3 Drive 1 at full strength (outputs only)
Note that states 2 and 3 only override the output value driven to a fixed value, but do not change the
drive mode of a pin from off to on. In other words, pins that are currently inputs remain inputs and are
not forced to drive.
GCTL_FREEZE I/O Freeze Control Register 0xE0050010
b31 b30 b29 b28 b27 b26 b25 b24
GCTL_FREEZE I/O Freeze Control Register
b23 b22 b21 b20 b19 b18 b17 b16
GCTL_FREEZE I/O Freeze Control Register
b15 b14 b13 b12 b11 b10 b9 b8
GCTL_FREEZE I/O Freeze Control Register
b7 b6 b5 b4 b3 b2 b1 b0
VIO4IO_FRZ[1:0] VIO3IO_FRZ[1:0] VIO2IO_FRZ[1:0] VIO1IO_FRZ[1:0]
R/W R/W R/W R/W R/W R/W R/W R/W
RRRRRRRR
00000000
Bit Name Description

Cypress EZ-USB FX3 Specifications

General

Brand	Cypress
Model	EZ-USB FX3
Category	Controller
Language	English