FDC37C665GT-MS Standard Microsystems (SMSC), FDC37C665GT-MS Datasheet - Page 6

• Manufacturer Part Number: FDC37C665GT-MS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37C665GT-MS

• Pin Count: 100
• Lead Free Status / RoHS Status: Compliant

PIN NO.
38
37
40
Serial Port
Interrupt
Request
Primary Serial
Port Interrupt
Serial Port
Interrupt
Request
Secondary Serial
Port Interrupt
Floppy
Controller
Interrupt
Request
NAME
DESCRIPTION OF PIN FUNCTIONS
IRQ4
PSPIRQ
IRQ3
SSPIRQ
FINTR
SYMBOL
BUFFER
TYPE
O24
O24
O24
O24
O24
6
FDC37C665GT (Motherboard application):
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.
FDC37C666GT
PSPIRQ is a source of PSP interrupt.
Externally, it should be connected to either
IRQ3 or IRQ4 on PC/AT via jumpers.
FDC37C665GT (Motherboard application):
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.
FDC37C666GT
SSPIRQ is a source of SSP interrupt.
Externally, it should be connected to either
IRQ3 or IRQ4 on PC/AT via jumpers.
This
Controller is enabled/disabled via bit 3 of the
Digital Output Register (DOR).
interrupt
DESCRIPTION
from
(Adapter
(Adapter
The interrupt is reset
The interrupt is reset
the
application):
application):
Floppy
Disk