LPC47B272-MS SMSC, LPC47B272-MS Datasheet - Page 162
LPC47B272-MS
Manufacturer Part Number
LPC47B272-MS
Description
IC CTRLR SUPER I/O LPC 100-QFP
Manufacturer
SMSC
Datasheet
1.LPC47B272-MS.pdf
(195 pages)
Specifications of LPC47B272-MS
Controller Type
I/O Controller
Interface
LPC
Voltage - Supply
3.3V
Current - Supply
15mA
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
638-1019
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SMSC LPC47B27x
FDD Option Register
Default = 0x00
on VCC POR,
VTR POR and
HARD RESET
FDD Type Register
Default = 0xFF
on VCC POR,
VTR POR and
HARD RESET
FDD0
Default = 0x00
on VCC POR,
VTR POR and
HARD RESET
FDD1
NAME
Table 68 - Floppy Disk Controller, Logical Device 0 [Logical Device Number = 0x00]
REG INDEX
0xF1 R/W
0xF2 R/W
0xF4 R/W
0xF5 R/W
0xF3 R
Bit[0] Forced Write Protect
= 0
= 1
nWRTPRT (to the FDC Core) = WP (FDC SRA
register, bit 1) = (nDS0 AND Forced Write Protect)
OR (nDS1 AND Forced Write Protect) OR nWRTPRT
(from the FDD Interface) OR Floppy Write Protect
Note: The Floppy Write Protect bit is in the Device
Disable register.
Note: Boot floppy is always drive 0.
Note: the Force Write Protect bit also applies to the
Bit[1] Reserved
Bits[3:2] Density Select
= 00
= 01
= 10
= 11
Bit[7:4] Reserved.
Bits[1:0] Floppy Drive A Type
Bits[3:2] Floppy Drive B Type
Bits[5:4] Reserved (could be used to store Floppy
Bits[7:6] Reserved (could be used to store Floppy
Note: The LPC47B27x supports two floppy drives
Reserved, Read as 0 (read only)
Bits[1:0] Drive Type Select: DT1, DT0
Bits[2]
Bits[4:3] Data Rate Table Select: DRT1, DRT0
Bits[5]
Bits[6]
Bits[7]
Refer to definition and default for 0xF4
DATASHEET
Parallel Port FDC.
Inactive (default)
FDD nWRTPRT input is forced active when
=0 Use Precompensation
=1 No Precompensation
either of the drives has been selected.
Read as 0 (read only)
Read as 0 (read only)
Precompensation Disable PTS
Read as 0 (read only)
Normal (default)
Normal (reserved for users)
1 (forced to logic "1")
0 (forced to logic "0")
Drive C type)
Drive D type)
- 162 -
DEFINITION
Rev. 04-17-07
STATE
C
C
C
C
C
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