FDC37C666GT(1994) 데이터 시트보기 (PDF) - SMSC -> Microchip

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FDC37C666GT
(Rev.:1994)

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

SMSC -> Microchip 

PIN NO.

NAME

83 nData Terminal

Ready

DESCRIPTION OF PIN FUNCTIONS

BUFFER

SYMBOL TYPE

DESCRIPTION

nDTR1

O4 Active low Data Terminal Ready output for

primary serial port. Handshake output

signal notifies modem that the UART is

ready to establish data communication link.

This signal can be programmed by writing

to bit 0 of Modem Control Register (MCR).

The hardware reset will reset the nDTR

signal to inactive mode (high). Forced

inactive during loop mode operation.

IDE

Configuration

Control

IDECF

93 nData Terminal nDTR2

Ready

FDC37C666GT (Adapter Mode): IDE

I

Configuration Control. During reset active

this input is read and latched to

enable/disable the IDE.

O4 Active low Data Terminal Ready output for

secondary serial port. Handshake output

signal notifies modem that the UART is

ready to establish data communication link.

This signal can be programmed by writing

to bit 0 of Modem Control Register (MCR),

The hardware reset will reset the nDTR

signal to inactive mode (high). Forced

inactive during loop mode operation.

Secondary Serial S2CF1

Port

Configuration

Control 1

89 Transmit Data 2 TXD2

FDC37C666GT (Adapter Mode): Secondary

I

Serial Port Configuration Control 1. During

reset active this input is read and latched to

define the address of the Secondary Serial

Port.

O4 Transmitter Serial Data output from

Secondary Serial Port.

FDCCF

I

FDC37C666GT (Adapter Mode): Floppy

Disk Configuration. This input is read and

latched during Reset to enable/disable the

Floppy Disk Controller.

11

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