FDC37C935-QS Standard Microsystems (SMSC), FDC37C935-QS Datasheet - Page 150

• Manufacturer Part Number: FDC37C935-QS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37C935-QS

• Lead Free Status / RoHS Status: Supplier Unconfirmed

SMSC Defined Logical Device Configuration
Registers
The SMSC Specific Logical Device
FDD Mode Register
Default = 0x0E
FDD Option
Register
Default = 0x00
Table 67 - Floppy Disk Controller, Logical Device 0 [Logical Device Number = 0x00]
NAME
REG INDEX
0xF0 R/W
0xF1 R/W
Bit[0] Floppy Mode
Bit[1] FDC DMA Mode
= 0
= 1
Bit[3:2] Interface Mode
= 11
= 10
= 01
= 00
Bit[4] : Swap Drives 0,1 Mode
= 0
= 1
Bits[7:5] Reserved, set to zero.
Bits[1:0] Reserved, set to zero
Bits[3:2] Density Select
= 00
= 01
= 10
= 11
Bits[5:4] Media ID Polarity
= 00
= 01
= 10
= 11
Bits[7:6] Boot Floppy
= 00
= 01
= 10
= 11
= 0 Normal Floppy Mode (default)
= 1
Enhanced Floppy Mode 2 (OS2)
Burst Mode is enabled
Non-Burst Mode (default)
AT Mode (default)
(Reserved)
PS/2
Model 30
No swap (default)
Drive and Motor sel 0 and 1 are
swapped.
Normal (default)
Normal (reserved for users)
1 (forced to logic "1")
0 (forced to logic "0")
(default)
FDD 0 (default)
FDD 1
Reserved (neither drive A or B is a boot
drive).
Reserved (neither drive A or B is a boot
drive).
150
values only on hard resets generated by POR or
the RESET_DRV signal.
not affected by soft resets.
DEFINITION
Note4
These registers are
STATE
C
C