FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 9

• 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
81,91
83,93
QFP/
89
78
79
Transmit Data 2
Receive Data 1
Transmit Data 1
nRequest to
Send
(System Option)
nData Terminal
Ready
NAME
DESCRIPTION OF PIN FUNCTIONS
TXD2/IRTX
RXD1
TXD1
nRTS1
nRTS2
(SYSOPT)
nDTR1
nDTR2
SYMBOL
BUFFER
TYPE
O24
024
O4
O4
I
9
Transmit serial data output for port 2. IR
transmit data.
Reciever serial data input for port 1.
Transmit serial data output for port 1.
Active low Request to Send outputs for the
Serial Port.
notifies modem that the UART is ready to
transmit
programmed by writing to bit 1 of Modem
Control Register (MCR).
reset will reset the nRTS signal to inactive
mode (high).
mode operation.
At the trailing edge of hardware reset, the
nRTS2 input is latched to determine the
configuration base address.
0 : INDEX Base I/O Address = 3F0 Hex
1 : INDEX Base I/O Address = 370 Hex
Active low Data Terminal Ready outputs for
the serial port.
notifies modem that the UART is ready to
establish data communication link.
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).
during loop mode operation.
data.
DESCRIPTION
Forced inactive during loop
Handshake output signal
Handshake output signal
This
signal
Forced inactive
The hardware
can
This
be