PC87365 Datasheet, PDF (29/215 Pages) National Semiconductor (TI) – 128-Pin LPC SuperI/O with System Hardware Monitoring

1.0 Signal/Pin Connection and Description (Continued)
1.5 INTERNAL PULL-UP AND PULL-DOWN RESISTORS
The signals listed in Table 4 can optionally support internal pull-up (PU) and/or pull-down (PD) resistors. See Section 12.3
for the values of each resistor type.
Table 4. Internal Pull-Up and Pull-Down Resistors
Signal
Pin/s
Type
Comments
ACCESS.bus (ACB)
SCL
54
PU₂₈
Programmable
SDA
55
PU₂₈
Programmable
General-Purpose Input/Output (GPIO) Ports
GPIO00-07
GPIO10
GPIO11-14
GPO15
GPIO16-17
GPIO20-27
GPIO30-33
GPIO34
2-9
21
53-56
57
69, 71
117-124
125-128
1
PU₂₈
PU₂₈
PU₂₈
PU₂₈
Programmable
Programmable
Programmable
Programmable
Keyboard and Mouse Controller (KBC)
P12, P16, P17 6,127,7
PU₂₈
Strap Configuration
BADDR
101
PSLDC0
99
PSLDC1
107
PSONPOL
109
TEST
98
PD₆₀
PD₆₀
PD₆₀
PD₆₀
PD₆₀
Strap
Strap
Strap
Strap
Strap
Parallel Port
ACK
79
AFD_DSTRB
93
BUSY_WAIT
78
ERR
91
INIT
89
PE
77
SLCT
76
SLIN_ASTRB 87
STB_WRITE
94
PU₂₂₀
PU₄₀₀
PD₁₂₀
PU₂₂₀
PU₄₀₀
PU₂₂₀/
PD₁₂₀
PD₁₂₀
PU₄₀₀
PU₄₀₀
Programmable
29
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