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GENERAL DESCRIPTION
The
FDC37C957FR
incorporates
an
8051
based keyboard controller; a Flash Interface;
four PS/2 ports; real-time clock; SMC's true
CMOS
765B
floppy
disk
controller
with
advanced digital data separator and 16 byte
data FIFO; two 16C550 compatible UARTs, the
second
UART
contains
a
Synchronous
Communications Engine to provide for IrDA Ver
1.1 (Fast IR) compliance;
one Multi-Mode
parallel
port
which
includes
ChiProtect
TM
circuitry plus EPP and ECP support; 8584 style
Access Bus interface; Serial IRQ peripheral
agent interface; General Purpose I/O; Two
independent pulse width modulators; on-chip 24
mA AT bus drivers and two floppy direct drive
support.
The true CMOS 765B core provides
100% compatibility with IBM PC/XT and PC/AT
architectures in addition to providing data
overflow and underflow protection.
The SMC
advanced digital data separator incorporates
SMC's patented data separator technology,
allowing for ease of testing and use. Both on-
chip
UARTs
are
compatible
with
the
NS16C550. The parallel port is compatible with
IBM PC/AT architecture, as well as EPP and
ECP. The 8051 controller can also take control
of the parallel port interface to provide remote
diagnostics or “Flashing” of the Flash memory.
The FDC37C957FR has three separate power
planes which allows it to provide “instant on”
and
system
power
management
functions.
Additionally, the FDC37C957FR incorporates
sophisticated power control circuitry (PCC).
The PCC supports multiple low power down
modes.
The FDC37C957FR’s configuration register set
is
compatible
with
the
ISA
Plug-and-Play
Standard (Version 1.0a) and provides the
functionality to support Windows '95. Through
internal configuration registers, each of the
FDC37C957FR's logical device's I/O address,
DMA
channel
and
IRQ
channel
may
be
programmed.
There are 480 I/O address
location options, 13 IRQ options, and two DMA
channel options for each logical device.
The FDC37C957FR does not require any
external filter components and is, therefore,
easy to use and offers lower system cost and
reduced board area.
The FDC37C957FR is
software and register compatible with SMC's
proprietary 82077AA core.
IBM, PC/XT and PC/AT are registered trademarks and PS/2 is
a trademark of International Business Machines Corporation
SMC is a registered trademark and Ultra I/O, ChiProtect, and
Multi-Mode
are
trademarks
of
Standard
Microsystems
Corporation