EZ-USB Datasheet, PDF (206/334 Pages) Cypress Semiconductor – The EZ-USB USB Integrated Circuit

OEA
b7
OEA7
R/W
x
b6
OEA6
R/W
x
Port A Output Enable
b5
OEA5
R/W
x
b4
OEA4
R/W
x
b3
OEA3
R/W
x
b2
OEA2
R/W
x
b1
OEA1
R/W
x
7F9C
b0
OEA0
R/W
x
OEB
b7
OEB7
R/W
x
b6
OEB6
R/W
x
Port B Output Enable
b5
OEB5
R/W
x
b4
OEB4
R/W
x
b3
OEB3
R/W
x
b2
OEB2
R/W
x
b1
OEB1
R/W
x
7F9D
b0
OEB0
R/W
x
OEC
b7
OEC7
R/W
x
b6
OEC6
R/W
x
Port C Output Enable
b5
OEC5
R/W
x
b4
OEC4
R/W
x
b3
OEC3
R/W
x
b2
OEC2
R/W
x
Figure 12-9. Output Enable Registers
b1
OEC1
R/W
x
7F9E
b0
OEC0
R/W
x
The OE registers control the output enables on the tri-state drivers connected to the port
pins. When these bits are “1,” the port is an output, unless the corresponding PORTnCFG
bit is set to a “1.”
EZ-USB TRM v1.9
Chapter 12. EZ-USB Registers
Page 12-13