FDC37C665IR SMSC Corporation, FDC37C665IR Datasheet - Page 6

• Manufacturer Part Number: FDC37C665IR
• Description: 3/5 Volt Advanced High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controller with Infranred Support
• Manufacturer: SMSC Corporation

PIN NO.
38
37
40
39
57
16
Serial Port
Interrupt
Request
Serial Port
Interrupt
Request
Floppy
Controller
Interrupt
Request
Parallel Port
Interrupt
Request 1
Reset
nRead Disk Data nRDATA
NAME
DESCRIPTION OF PIN FUNCTIONS
IRQ4
IRQ3
FINTR
PINTR1
RST
SYMBOL
FLOPPY DISK INTERFACE
BUFFER
TYPE
OD12
O12
O12
O12
O12
IS
IS
6
IRQ4 is the interrupt from the Primary Serial
Port (PSP) or Secondary Serial Port (SSP)
when the PSP or SSP have their address
programmed as COM1 or COM3 (as
defined in the Configuration Registers). The
appropriate interrupt from the Serial Port is
enabled/disabled via the Interrupt Enable
Register (IER).
inactive after interrupt service. It is disabled
through IER or hardware reset.
IRQ3 is the interrupt from the Primary Serial
Port (PSP) or secondary Serial Port (SSP)
when the PSP or SSP have their address
programmed as COM2 or COM4 (as
defined in the Configuration Registers). The
appropriate interrupt from the Serial Port is
enabled/disabled via the Interrupt Enable
Register (IER).
inactive after interrupt service. It is disabled
through IER or hardware reset.
This
Controller is enabled/disabled via bit 3 of the
Digital Output Register (DOR).
This interrupt from the Parallel Port is
enabled/disabled via bit 4 of the Parallel
Port
configuration registers CR1 and CR3 for
more information.
If EPP or ECP Mode is enabled, this output
is pulsed low, then released to allow sharing
of interrupts.
This
FDC37C665IR and must be valid for 500 ns
minimum.
registers is described in the appropriate
section. The configuration registers are not
affected by this reset.
Raw serial bit stream from the disk drive,
low active. Each falling edge represents a
flux transition of the encoded data.
interrupt
active
Control
The effect on the internal
DESCRIPTION
high
from
Register.
The interrupt is reset
The interrupt is reset
signal
the
Floppy
resets
Refer
Disk
the
to