PC87383 Datasheet, PDF (9/77 Pages) National Semiconductor (TI) – Legacy-Reduced SuperI/O with Fast Infrared Port, Serial Port, Parallel Port and GPIOs for Portable Applications

1.0 Signal/Pin Connection and Description (Continued)
1.2 BUFFER TYPES AND SIGNAL/PIN DIRECTORY
This section describes all signals. Signals are organized in functional groups.
Buffer Types
The signal DC characteristics are denoted by a buffer type symbol, described briefly in Table 1and in further detail in
Chapter 7 on page 63.
Table 1. Buffer Types
Symbol
IN_PCI
IN_T
IN_TS
O_PCI
O_p/n
OD_n
PWR
GND
Description
Input, PCI 3.3V
Input, TTL compatible
Input, TTL compatible, with Schmidt Trigger
Output, PCI 3.3V
Output, push-pull buffer that is capable of sourcing p mA and sinking n mA
Output, open-drain output buffer that is capable of sinking n mA
Power pin
Ground pin
Table 2. Pin Multiplexing Configuration
Functional
Block
Signal
Functional
Block
Signal
Configuration Functional
Select
Block
Signal
Configuration
Select
Serial Port
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
LPC
DTR1_BOUT1
GPIO10
GPIO11
GPO12
GPO13
GPIO14
GPIO15
GPIO16
GPIO17
GPIO21
GPO22
GPIO23
GPIO24
LDRQ
Straps
Serial Port
Serial Port
Serial Port
Serial Port
Serial Port
Serial Port
Serial Port
Infrared
LPC
LPC
Parallel Port
Parallel Port
Testability
BADDR
Strap
RI1
SIOCF2[0]
CTS1
SOUT1
RTS1
SIN1
DSR1
DCD1
IRRX2_IRSL0 SIOCF2[1]
LPCPD
SIOCF2[3]
CLKRUN SIOCF2[5]
PD7
SIOCF2[7]
ACK
SIOCF2[7]
XOR_OUT Strap
Straps
Straps
TEST
TRIS
Strap
Strap
Revision 1.1
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