FDC37M81x SMSC Corporation, FDC37M81x Datasheet - Page 14

• Manufacturer Part Number: FDC37M81x
• Description: PC98/99 Compliant Enhanced Super I/O Controller
• Manufacturer: SMSC Corporation

SUPER I/O REGISTERS
The address map, shown below in Table 1, shows
the addresses of the different blocks of the Super
I/O immediately after power up.
addresses of the FDC, serial and parallel ports can
be moved via the configuration registers. Some
addresses are used to access more than one
register.
Note 1: Refer to the configuration register descriptions for setting the base address
Base+(0-5) and +(7)
Base+(0-7)
Base1+(0-7)
Base+(0-3)
Base+(0-7)
Base+(0-3), +(400-402)
Base+(0-7), +(400-402)
60, 64
ADDRESS
Table 1 - Super I/O Block Addresses
FUNCTIONAL DESCRIPTION
The base
Floppy Disk
Serial Port Com 1
Serial Port Com 2
Parallel Port
SPP
EPP
ECP
ECP+EPP+SPP
KYBD
BLOCK NAME
14
HOST PROCESSOR INTERFACE
The host processor communicates with the
FDC37M81x through a series of read/write
registers. The port addresses for these registers
are shown in Table 1.
accomplished through programmed I/O or DMA
transfers. All registers are 8 bits wide. All host
interface output buffers are capable of sinking a
minimum of 12 mA.
LOGICAL
DEVICE
0
4
5
3
7
IrDA 1.0
NOTES
Register access is