FDC37C669TQFP Просмотр технического описания (PDF) - SMSC -> Microchip

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FDC37C669TQFP

PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support

SMSC -> Microchip 

QFP/

TQFP

PIN NO.

NAME

73 nPrinter Select

Input

DESCRIPTION OF PIN FUNCTIONS

SYMBOL

nSLCTIN

BUFFER

TYPE

DESCRIPTION

OD24

This active low output selects the printer. This

is the complement of bit 3 of the Printer

Control Register.

74 nInitiate Output nINIT

0P24

OD24

Refer to Parallel Port description for use of this

pin in ECP and EPP mode.

This output is bit 2 of the printer control

register. This is used to initiate the printer

when low.

76 nAutofeed Output nAUTOFD

77 nStrobe Output nSTROBE

61 Busy

BUSY

62 nAcknowledge nACK

0P24

OD24

0P24

OD24

0P24

I

I

Refer to Parallel Port description for use of this

pin in ECP and EPP mode.

This output goes low to cause the printer to

automatically feed one line after each line is

printed. The nAUTOFD output is the

complement of bit 1 of the Printer Control

Register.

Refer to Parallel Port description for use of this

pin in ECP and EPP mode.

An active low pulse on this output is used to

strobe the printer data into the printer. The

nSTROBE output is the complement of bit 0 of

the Printer Control Register.

Refer to Parallel Port description for use of this

pin in ECP and EPP mode.

This is a status output from the printer, a high

indicating that the printer is not ready to

receive new data. Bit 7 of the Printer Status

Register is the complement of the BUSY input.

Refer to Parallel Port description for use of

this pin in ECP and EPP mode.

A low active output from the printer indicating

that it has received the data and is ready to

accept new data. Bit 6 of the Printer Status

Register reads the nACK input. Refer to

Parallel Port description for use of this pin in

ECP and EPP mode.

11

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