FDC37B78X SMSC Corporation, FDC37B78X Datasheet - Page 15
FDC37B78X
Manufacturer Part Number
FDC37B78X
Description
Enhanced Super I/O Controller with ACPI Support/ Real Time Clock and Consumer IR
Manufacturer
SMSC Corporation
Datasheet
1.FDC37B78X.pdf
(258 pages)
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FUNCTIONAL DESCRIPTION
SUPER I/O REGISTERS
The address map, shown below in Table 4,
shows the addresses of the different blocks of
the Super I/O immediately after power up. The
base 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.
Base+(0-5) and +(7)
Base+(0-3)
Base+(0-7)
Base+(0-3), +(400-402)
Base+(0-7), +(400-402)
Base+(0-7)
Base1+(0-7)
Base2+(0-7)
70,71, Base, Base+(1)
60, 64
Base + (0-17h)
Base + (0-1)
Note 1: Refer to the configuration register descriptions for setting the base address
ADDRESS
TABLE 3 - SUPER I/O BLOCK ADDRESSES
Floppy Disk
Parallel Port
SPP
EPP
ECP
ECP+EPP+SPP
Serial Port Com 1
Serial Port Com 2
RTC
KYBD
ACPI, PME, SMI
Configuration
BLOCK NAME
15
HOST PROCESSOR INTERFACE
The host processor communicates with the
FDC37B78x through a series of read/write
registers. The port addresses for these registers
are shown in Table 4.
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
A
0
3
4
5
6
7
IR Support
Consumer IR
NOTES
Register access is
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