FDC37C665GT-MS SMSC, FDC37C665GT-MS Datasheet - Page 113

• Manufacturer Part Number: FDC37C665GT-MS
• Description: IC CTRLR SUPER I/O MULTI 100-QFP
• Manufacturer: SMSC

Specifications of FDC37C665GT-MS

• Controller Type: I/O Controller
• Interface: ISA Host
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 35mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1007

The IDE interface enables hard disks with
embedded controllers (AT and XT) to be
interfaced to the host processor. The following
definitions are for reference only.
registers
FDC37C665GT and FDC37C666GT. Access to
these
FDC37C665GT and FDC37C666GT. For more
information, refer to the IDE pin descriptions
and the ATA specification.
HOST FILE REGISTERS
The HOST FILE REGISTERS are accessed by
the AT Host, rather than the Local Processor.
There are two groups of registers, the AT Task
File, and the Miscellaneous AT Registers.
TASK FILE REGISTERS
Task File Registers may be accessed by the
host AT when pin nHDCS0 is active (low). The
Data Register (1F0H) is 16 bits wide; the
remaining task file registers are 8 bits wide. The
task file registers are
registers
are
FIGURE 3 - HOST PROCESSOR REGISTER ADDRESS MAP (AT MODE)
not
PRIMARY
are
INTEGRATED DRIVE ELECTRONICS INTERFACE
1F0H
1F7H
3F6H
3F7H
implemented
controlled
ATA
and
SECONDARY
by
in
170H
177H
376H
377H
These
EATA
the
the
113
ADDRESS 1F0H-1F7H; 170H-177H
These AT registers contain the Task File
Registers. These registers communicate data,
command, and status information with the AT
host, and are addressed when nHDCS0 is low.
ADDRESS 376H/3F6H; 377H/3F7H
These AT registers may be used by the BIOS for
drive control.
interface when nHDSC1 is active.
Figure 3 shows the AT Host Register Map of the
FDC37C665GT and FDC37C666GT.
compatible. Please refer to the ATA and EATA
specifications. These are available from:
TASK FILE REGISTERS
MISC. AT REGISTERS
Global Engineering
2805 McGaw Street
Irvine, CA 92714
[phone]
[phone]
They are accessed by the AT