FDC37C78-HT Standard Microsystems (SMSC), FDC37C78-HT Datasheet - Page 10

• Manufacturer Part Number: FDC37C78-HT
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37C78-HT

• Package Type: TQFP
• Lead Free Status / RoHS Status: Compliant

FDC37C78 REGISTERS
The address map, shown below in Table 1, shows
the addresses of the different blocks of the
FDC37C78 immediately after power up. Some
addresses are used to access more than one
register.
Note 1: Configuration registers can only be modified in configuration mode, refer to the configuration
Note 2: The fdc must be enabled in the configuration registers before accessing the registers.
register description for more information. Access to status registers A and B of the floppy disk is
disabled in configuration mode.
+0, +1
Base +0,1
Base +[2:5, 7]
ADDRESS
Table 1 - FDC37C78 Block Addresses
FUNCTIONAL DESCRIPTION
Configuration
Floppy Disk
Floppy Disk
BLOCK NAME
10
HOST PROCESSOR INTERFACE
The host processor communicates with the
FDC37C78
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.
Write only; Note 1, 2
Read only; Disabled at power
up; Note 2
Disabled at power up; Note 2
through
NOTES
a
series
Register access is
of
read/write