FDC37C669 datasheet(6/164 Pages) SMSC

tên linh kiện	FDC37C669

Giải thích chi tiết về linh kiện	PC 98/99 COMPLIANT SUPER I/O FLOPPY DISK CONTROLLER WITH INFRARED SUPPORT

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nhà sản xuất	SMSC [SMSC Corporation]

Trang chủ	http://www.smsc.com

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6

DESCRIPTION OF PIN FUNCTIONS

QFP/

TQFP

PIN NO.

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

HOST PROCESSOR INTERFACE

48-51

53-56

Data Bus 0-7

D0-D7

I/O24

The data bus connection used by the host

microprocessor to transmit data to and from

the chip.

These pins are in a high-

impedance state when not in the output

mode.

44

nI/O Read

nIOR

I

This active low signal is issued by the host

microprocessor to indicate a read operation.

45

nI/O Write

nIOW

I

This active low signal is issued by the host

microprocessor to indicate a write operation.

46

Address Enable

AEN

I

Active high Address Enable indicates DMA

operations on the host data bus.

Used

internally to qualify appropriate address

decodes.

28-34

41-43,

97

I/O Address

A0-A10

I

These host address bits determine the I/O

address to be accessed during nIOR and

nIOW cycles.

These bits are latched

internally by the leading edge of nIOR and

nIOW. All internal address decodes use the

full A0 to A10 address bits.

21,52,

99

DMA Request

A, B, C

DRQ_A

DRQ_B

DRQ_C

O24

This active high output is the DMA request

for byte transfers of data between the host

and the chip. This signal is cleared on the

last byte of the data transfer by the nDACK

signal going low (or by nIOR going low if

nDACK was already low as in demand

mode).

22,36,

96

nDMA

Acknowledge

A, B, C

nDACK_A

nDACK_B

nDACK_C

I

An active low input acknowledging the

request for a DMA transfer of data between

the host and the chip.

This input enables

the DMA read or write internally.

35

Terminal Count

TC

I

This signal indicates to the chip that DMA

data transfer is complete.

TC is only

accepted when nDACK_x is low. In AT and

PS/2 model 30 modes, TC is active high

and in PS/2 mode, TC is active low.

Số phần tương tự - FDC37C669

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
SMSC Corporation	FDC37C669	575Kb / 164P	PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support
Microchip Technology	FDC37C669-MT	593Kb / 162P	PC 98/99 Compliant Super I/O Floppy Disk Controller Rev. 06/29/2007
Agilent(Hewlett-Packard...	FDC37C669FR	374Kb / 25P	Data 1.4 Compliant 4 Mb/s 3V Infrared Transceiver
SMSC Corporation	FDC37C669	575Kb / 164P	PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support

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Mô tả tương tự - FDC37C669

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
SMSC Corporation	FDC37C669	575Kb / 164P	PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support
Microchip Technology	FDC37C669-MT	593Kb / 162P	PC 98/99 Compliant Super I/O Floppy Disk Controller Rev. 06/29/2007
SMSC Corporation	FDC37N3869	725Kb / 136P	3.3V SUPER I/O CONTROLLER WITH INFRARED SUPPORT
	37M602	650Kb / 182P	ENHANCED SUPER I/O CONTROLLER WITH INFRARED SUPPORT
	FDC37M81	574Kb / 198P	PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up
	FDC37N769	720Kb / 138P	3.3V SUPER I/O CONTROLLER WITH INFRARED SUPPORT FOR PORTABLE APPLICATIONS
	FDC37M81X	693Kb / 198P	PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up
Microchip Technology	FDC37C78-HT	345Kb / 82P	Floppy Disk Controller Rev. 02-16-07
SMSC Corporation	FDC37C665IR	562Kb / 162P	3/5 Volt Advanced High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controller with Infranred Support
SMSC Corporation	FDC37N769	669Kb / 137P	3.3V Super I/O Controller with Infrared Support for Portable Applications

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