LPC47S457-NC SMSC [SMSC Corporation], LPC47S457-NC Datasheet - Page 208

• Manufacturer Part Number: LPC47S457-NC
• Description: Advanced I/O with X-Bus Interface
• Manufacturer: SMSC [SMSC Corporation]

SMSC Defined Logical Device Configuration Registers
The SMSC Specific Logical Device Configuration Registers (0xE0-0xFE) reset to their default values only on VCC POR,
VTR POR , or PCI RESET signal as shown. These registers are not affected by soft resets.
SMSC LPC47S45x
Primary Base I/O
Address (High Byte)
Default = 0x03
on VCC POR, VTR
POR, PCI RESET and
SOFT RESET
Primary Base I/O
Address (Low Byte)
Default = 0xF0
on VCC POR, VTR
POR, PCI RESET and
SOFT RESET
FDD Mode Register
Default = 0x0E
on VCC POR ,
VTR POR and
PCI RESET
NAME
Table 87 − Floppy Disk Controller, Logical Device 0 [Logical Device Number = 0x00]
REG INDEX
(R/W)
0xF0
0x60
0x61
Refer to Table 84 for the number of base address registers used
by each device. Unused registers will ignore writes and return
zero when read. If the I/O Base Address of the logical device is
not within the Base I/O range as shown in the Logical Device I/O
map, then read or write is not valid and is ignored.
Refer to Table 84 for the number of base address registers used
by each device. Unused registers will ignore writes and return
zero when read. If the I/O Base Address of the logical device is
not within the Base I/O range as shown in the Logical Device I/O
map, then read or write is not valid and is ignored.
Bit[0] Floppy Mode
Bit[1] FDC DMA Mode
= 0
= 1
Bit[3:2] Interface Mode
= 11
= 10
= 01
= 00
Bit[4] Reserved
Bit[5] Reserved, set to zero
Bit[6] FDC Output Type Control
= 0
= 1
Bit[7] FDC Output Control
= 0
= 1
Registers 0x60 and 0x61 set the base address for the device.
Registers 0x60 and 0x61 set the base address for the device.
= 0
= 1
DATASHEET
Page 208 of 259
Normal Floppy Mode (default)
Enhanced Floppy Mode 2 (OS2)
Burst Mode is enabled
Non-Burst Mode (default)
AT Mode (default)
(Reserved)
PS/2
Model 30
FDC outputs are OD12 open drain (default)
FDC outputs are O12 push-pull
FDC outputs active (default)
FDC outputs tri-stated
DEFINITION
Rev. 06-01-06
STATE
C
C
C