LPC47B272-MS SMSC, LPC47B272-MS Datasheet - Page 161

• Manufacturer Part Number: LPC47B272-MS
• Description: IC CTRLR SUPER I/O LPC 100-QFP
• Manufacturer: SMSC

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

d.
e.
SMSC Defined Logical Device Configuration Registers
The SMSC Specific Logical Device Configuration Registers reset to their default values only on hard
resets generated by Vcc or VTR POR (as shown) or the nPCI_RESET signal. These registers are
not affected by soft resets.
SMSC LPC47B27x
FDD Mode Register
Default = 0x0E
on VCC POR,
VTR POR and
HARD RESET
NAME
Table 68 - Floppy Disk Controller, Logical Device 0 [Logical Device Number = 0x00]
Keyboard Controller: Refer to the KBD section of this spec.
MPU-401: Refer to the MPU-401 section of this spec.
(FROM ECR REGISTER)
010
011
100
101
110
111
REG INDEX
0xF0 R/W
MODE
CONFIG
TEST
FIFO
ECP
RES
EPP
Bit[0] Floppy Mode
Bit[1] FDC DMA Mode
= 0
= 1
Bit[3:2] Interface Mode
= 11
= 10
= 01
= 00
Bit[4] FDC_SWAP
0 = Do Not Swap (default)
1 = Swap Drive 0 (nDS, nMTR pins) with Drive 1 (nDS
, nMTR pins)
Bit[5] Reserved, set to zero
Bit[6] FDC Output Type Control
= 0
= 1
Bit[7] FDC Output Control
= 0
= 1
Note: Bits 6 & 7 do not affect the parallel port FDC
pins.
= 0
= 1
DATASHEET
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
CONTROLLED BY
- 161 -
IRQE
IRQE
IRQE
IRQ
(on)
(on)
(on)
DEFINITION
CONTROLLED BY
dmaEn
dmaEn
dmaEn
dmaEn
dmaEn
dmaEn
DMA
Rev. 04-17-07
STATE
C