FDC37C665GT_07 Datasheet, PDF (11/152 Pages) SMSC Corporation – High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers

PIN NO.
NAME
83 nData Terminal
Ready
DESCRIPTION OF PIN FUNCTIONS
BUFFER
SYMBOL TYPE
DESCRIPTION
nDTR1
O4 Active low Data Terminal Ready output for
primary serial port. Handshake output
signal notifies modem that the UART is
ready to establish data communication link.
This 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). Forced
inactive during loop mode operation.
IDE
Configuration
Control
IDECF
93 nData Terminal nDTR2
Ready
FDC37C666GT (Adapter Mode): IDE
I
Configuration Control. During reset active
this input is read and latched to
enable/disable the IDE.
O4 Active low Data Terminal Ready output for
secondary serial port. Handshake output
signal notifies modem that the UART is
ready to establish data communication link.
This 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). Forced
inactive during loop mode operation.
Secondary Serial S2CF1
Port
Configuration
Control 1
89 Transmit Data 2 TXD2
FDC37C666GT (Adapter Mode): Secondary
I
Serial Port Configuration Control 1. During
reset active this input is read and latched to
define the address of the Secondary Serial
Port.
O4 Transmitter Serial Data output from
Secondary Serial Port.
FDCCF
I
FDC37C666GT (Adapter Mode): Floppy
Disk Configuration. This input is read and
latched during Reset to enable/disable the
Floppy Disk Controller.
11