Cypress EZ-USB FX3 User Manual

EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 248
GCTL_WPU_CFG
0xE0051020
10.4.5 GCTL_WPU_CFG (continued)
In conjunction with the GCTL_DS register, this register determines whether a weak pull-up on each I/O pin should be
engaged. Firmware should not enable WPU and WPD simultaneously on a given I/O. A weak pull-up or weak pull-down takes
about 5 µs to be effective at the pads.
59:0 WPU[59:0] When set, a weak pull-up is connected for the pin associated with the corresponding GPIO #.
GCTL_WPU_CFG I/O Pull-Up Configuration Register
b7 b6 b5 b4 b3 b2 b1 b0
WPU[7:0]
R/W R/W R/W R/W R/W R/W R/W R/W
R R R R R R R R
0 0 0 0 0 0 0 0
Bit Name Description

Cypress EZ-USB FX3 Specifications

General

Brand	Cypress
Model	EZ-USB FX3
Category	Controller
Language	English