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FDC37C665GT

High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers

SMSC -> Microchip 

PIN NO.

NAME

60 Paper End

59 Printer Selected

Status

75 nError

71-68 Port Data

66-63

100 IOCHRDY

23 nIDE Low Byte

Enable

DESCRIPTION OF PIN FUNCTIONS

BUFFER

SYMBOL TYPE

DESCRIPTION

PE

I

Another status output from the printer, a

high indicating that the printer is out of

paper. Bit 5 of the Printer Status Register

reads the PE input. Refer to Parallel Port

description for use of this pin in ECP and

EPP mode.

SLCT

I

This high active output from the printer

indicates that it has power on. Bit 4 of the

Printer Status Register reads the SLCT

input. Refer to Parallel Port description for

use of this pin in ECP and EPP mode.

nERR

I

A low on this input from the printer indicates

that there is a error condition at the printer.

Bit 3 of the Printer Status register reads the

nERR input. Refer to Parallel Port

description for use of this pin in ECP and

EPP mode.

PD0-PD7

I/OP24 The bi-directional parallel data bus is used

to transfer information between CPU and

peripherals.

IOCHRDY

OD24P In EPP mode, this pin is pulled low to

extend the read/write command. This pin

has an internal pull-up.

IDE

nIDEENLO

O8 This active low signal is used in both the XT

and AT mode. In the AT mode, this pin is

active when the IDE is enabled and the I/O

address is accessing 1F0H-1F7H and

3F6H-3F7H in primary address mode or

170H-177H and 376H,377H in secondary

address mode. In the XT mode, this signal

is active for accessing 320H-323H, 8 bit

programmed I/O or DMA.

S1CF1

FDC37C666GT (Adapter Mode): Primary

I

Serial Configuration 1. Read and latched

during reset active to select the address of

the Secondary Serial Port.

15

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