FDC37C669-MS Standard Microsystems (SMSC), FDC37C669-MS Datasheet - Page 122
FDC37C669-MS
Manufacturer Part Number
FDC37C669-MS
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.FDC37C669-MS.pdf
(162 pages)
Specifications of FDC37C669-MS
Pin Count
100
Lead Free Status / RoHS Status
Compliant
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CR03
This
Configuration Mode and the CSR has been
BIT NO.
7,2
0
1
3
4
5
6
register
PWRGD/
GAMECS
Enhanced Floppy Mode
2
Reserved
DRVDEN1
MFM
IDENT
ADRx/
DRV2 EN/
IRQ_B
can
BIT NAME
only
be
accessed
Bit 0
0
1
Bit 1
0
1
Reserved - Read as zero
Bit
4
0
1
IDENT is used in conjunction with MFM to define the interface
mode of operation
Bit - 7
0
1
1
Table 50 - CR03
IDENT
1
1
0
0
in the
Pin function
PWRGD (default)
GAMECS
Pin DRVDEN1 output
DRVDEN 1 output
DRVDEN 1 high (default)
Bit - 2
x
0
1
Floppy Mode - Refer to the description of the
TAPE DRIVE REGISTER (TDR) for more
information on these modes.
NORMAL Floppy Mode (Default)
Enhanced Floppy Mode 2 (OS2)
122
MFM
Pin 94
DRV2 (input)
ADRX
IRQ_B
1
0
1
0
initialized to 03H. The default value after power up is
780H.
DESCRIPTION
MODE
AT Mode (Default)
Reserved
PS/2
Model 30
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