PC87591L-N05 Datasheet, PDF (118/401 Pages) National Semiconductor (TI) – LPC Mobile Embedded Controller

4.0 Embedded Controller Modules (Continued)
Port Weak Pull-Up Registers (PxWPU, PyWPU)
These registers control the pull-up for the related pin, when it used either as GPIO or in its alternate function. The pull-up is
enabled when the corresponding bit of PxWPU or PyWPU is set and the port buffer is in TRI-STATE. Otherwise, the pull-up
is disabled (i.e., high impedance).
On reset, PxWPU or PyWPU is cleared (0), disabling all pull-ups.
Location: See Appendix A
Type: R/W
Bit
Name
Reset
7
6
5
4
3
2
1
0
Px Port Weak Pull-Up Enable
0
0
0
0
0
0
0
0
Bit
Name
Reset
7
6
5
4
3
2
1
0
Py Port Weak Pull-Up Enable
0
0
0
0
0
0
0
0
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