FDC37N958FR View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37N958FR

Notebook I/O Controller with Enhanced Keyboard and System Control

SMSC -> Microchip 

GENERAL DESCRIPTION

The FDC37N958FR is compliant with ACPI 1.0

and PC 97 and incorporates an 8051 based

keyboard controller; a Flash Interface; four PS/2

ports; real-time clock; SMSC's true CMOS 765B

FDC with advanced digital data separator and 16

byte data FIFO; two 16C550A 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 ChiProtectTM 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 SMSC advanced digital data

separator incorporates SMSC's patented data

separator technology, allowing for ease of testing

and use. Both on-chip UARTs are compatible

with the NS16C550A. 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 FDC37N958FR has three

separate power planes which allows it to provide

“instant on” and system power management

functions. Additionally, the FDC37N958FR

incorporates sophisticated power control circuitry

(PCC). The PCC supports multiple low power

down modes.

The FDC37N958FR’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

FDC37N958FR'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 4 DMA channel

options for each logical device.

The FDC37N958FR does not require any external

filter components and is, therefore, easy to use

and offers lower system cost and reduced board

area. The FDC37N958FR is software and

register compatible with SMSC's proprietary

82077AA core.

SMSC DS – FDC37N958FR

Page 1

Rev. 09/01/99

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