FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 13

• Manufacturer Part Number: FDC37C669_07
• Description: PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support
• Manufacturer: SMSC [SMSC Corporation]

PIN NO.
TQFP
63-66
68-71
QFP/
100
24
25
26
20
Port Data
IOCHRDY
nIDE Enable
Interrupt
Request H
nIDE Chip
Select 0
IRRX2
nIDE Chip
Select 1
IR Transmit 2
CLOCK 14
NAME
DESCRIPTION OF PIN FUNCTIONS
PD0-PD7
IOCHRDY
nIDEEN
IRQ_H
nHDCS0
IRRX2
nHDCS1
IRTX2
CLK14
SYMBOL
MISCELLANEOUS
IDE/ALT IR PINS
BUFFER
(Note 1)
(Note 1)
(Note 1)
OD24P
TYPE
O24P
OD24
O24P
O24P
O24P
I/O24
ICLK
024
I
13
The bi-directional parallel data bus is used
to transfer information between CPU and
peripherals.
In EPP mode, this pin is pulled low to
extend the read/write command. This pin
has an internal pull-up.
This active low signal is active when the IDE
is enabled and the I/O address is accessing
an IDE register.
The interrupt request from a logical device
or IRQIN may be output on the IRQH signal.
information.
If EPP or ECP Mode is enabled, this output
is pulsed low, then released to allow sharing
of interrupts.
This
corresponding to the eight control block
addresses.
Alternate IR Receive input
This
corresponding
register.
Alternate IR transmit output
The external connection to a single source
14.318 MHz clock.
Refer to the configuration registers for more
is
is
the
the
DESCRIPTION
Hard
Hard
to
the
Disk
Disk
alternate
Chip
Chip
status
select
select