PC87309 Datasheet, PDF (191/192 Pages) National Semiconductor (TI) – PC87309 SuperI/O Plug and Play Compatible Chip in Compact 100-Pin VLJ Packaging

Glossary
SIR
Serial Infrared mode.
SIR_PW
SIR Pulse Width control for UART2.
SPP
The Standard Parallel Port configuration of the Par-
allel Port device supports the Compatible SPP
mode and the Extended PP mode.
SRA and SRB
Status Registers A and B of the FDC.
ST0, ST1, ST2 and ST3
Status registers 0, 1, 2 and 3 of the FDC.
STR
Status Register of the Parallel Port in SPP modes.
TDR
Tape Drive Register of the FDC.
TFIFO
Test FIFO for the Parallel Port in Extended Capabil-
ities Port (ECP) mode 110.
TV-Remote Mode
See Consumer Remote Control mode.
Two-UART mode
In this mode, the PC87309 decodes address lines
A0-A11. UART2 provides a 16550 UART with
SIN2/SOUT2 interface signals only or a partially IR
support with IRRX and IRTX signals only. The
mode is configured during reset, via CFG0 strap
pin.
TXFLV
Transmission FIFO Level for the UARTs.
191
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