FDC37c67x pdf datasheet (Enhan

The FDC37C67x with Consumer IR and IrDA
v1.1 support incorporates a keyboard interface,
SMSC's true CMOS 765B floppy disk controller,
advanced digital data separator, two 16C550
compatible UARTs, one Multi-Mode parallel port
which includes ChiProtect circuitry plus EPP
and ECP, on-chip 24 mA AT bus drivers, two
floppy direct drive support, Intelligent power
management and SMI support. The true CMOS
765B core provides 100% compatibility with IBM
PC/XT and PC/AT architectures in addition to
providing data overflow and underflow
protection. The SMSC advanced digital data
separator incorporates SMSC's patented data
separator technology, allowing for ease of
testing and use. Both on-chip UARTs are
compatible with the NS16C550. The parallel
port is compatible with IBM PC/AT architecture,
as well as IEEE 1284 EPP and ECP. The
FDC37C67x incorporates sophisticated power
control circuitry (PCC). The PCC supports
multiple low power down modes.