W83877TF/W83877TG
Publication Release Date: May 2006
-11- Revision 0.7
Multi-Mode Parallel Port, continued
SYMBOL PIN I/O FUNCTION
FD
20 OD12
PRINTER MODE:
FD
An active low output from this pin causes the printer to auto feed
a line after a line is printed. This pin is pulled high internally.
Refer to the description of the parallel port for the definition of
this pin in ECP and EPP mode.
OD
12
EXTENSION FDD MODE:
RWC2
This pin is for Extension FDD B; its function is the same as that
of the
RWC pin.
OD
12
EXTENSION 2FDD MODE:
RWC2
This pin is for Extension FDD A and B; its function is the same as
that of the
RWC pin.
STB
19 OD
12
PRINTER MODE:
STB
An active low output is used to latch the parallel data into the
printer. This pin is pulled high internally. Refer to the description
of the parallel port for the definition of this pin in ECP and EPP
mode.
-
-
EXTENSION FDD MODE: NC pin
EXTENSION 2FDD MODE: NC pin
PD0 9 I/O
24t
PRINTER MODE: PD0
Parallel port data bus bit 0. Refer to the description of the parallel
port for the definition of this pin in ECP and EPP mode.
IN
t
EXTENSION FDD MODE:
INDEX2
This pin is for Extension FDD B; the function of this pin is the
same as that of the
INDEX pin. This pin is pulled high internally.
IN
t
EXTENSION 2FDD MODE:
INDEX2
This pin is for Extension FDD A and B; this function of this pin is
the same as
INDEX pin. This pin is pulled high internally.
PD1 10 I/O24t
PRINTER MODE: PD1
Parallel port data bus bit 1. Refer to the description of the parallel
port for the definition of this pin in ECP and EPP mode.
INt
EXTENSION FDD MODE:
TRAK02
This pin is for Extension FDD B; the function of this pin is the
same as that of the
TRAK0
pin. This pin is pulled high internally.
INt
EXTENSION. 2FDD MODE:
TRAK02
This pin is for Extension FDD A and B; this function of this pin is
the same as
TRAK0
pin. This pin is pulled high internally.
