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LS1028A GPIO3\[4:2\] =>
GPIO\[4:2\]
4.53 GPIO I/O (GPIO_IO)
Address
Register
Offset
GPIO_IO
080h
Function
GPIO_IO is the input/output registers of the 8-bit GPIO port.
Read operations return the current pin state, whether driven externally (input mode) or driven internally (output mode).
Write operations set the pin level when in output mode; writes while in input mode are ignored.
Undefined pins read as '0'.
Diagram
Bits
7
6
5
4
3
2
1
0
R
IO4
IO3
IO2
W
CRST
111
1
1
1
11
Fields
Field
Function
7-5
-
Reserved.
4
IO4
IO port values (if corresponding DIR.n is 0):
0= input pin is at level 0.
1= input pin is at level 1.
IO port values (if corresponding DIR.n is 1):
0= output pin driven to level 0.
1= output pin driven to level 1.
3
IO3
Same as IO4.
Table continues on the next page...
Qixis Programming Model
QorIQ LS1028A Reference Design Board Reference Manual, Rev. b, 11/2018
102
COMPANY CONFIDENTIAL
NXP Semiconductors
Содержание QorIQ LS1028A
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