LPC47M172 SMSC Corporation, LPC47M172 Datasheet - Page 45
LPC47M172
Manufacturer Part Number
LPC47M172
Description
ADVANCED I/O CONTROLLER WITH MOTHERBOARD GLUE LOGIC
Manufacturer
SMSC Corporation
Datasheet
1.LPC47M172.pdf
(227 pages)
- Current page: 45 of 227
- Download datasheet (2Mb)
BIT 5 UNDEFINED
BIT 6 LOW POWER
BIT 7 SOFTWARE RESET
Note:
Note 1:
SMSC/Non-SMSC Register Sets (Rev. 02-27-04)
Should be written as a logic “0”.
A logic “1” written to this bit will put the floppy controller into manual low power mode. The floppy
controller clock and data separator circuits will be turned off. The controller will come out of manual low
power mode after a software reset or access to the Data Register or Main Status Register.
This active high bit has the same function as the DOR RESET (DOR bit 2) except that this bit is self
clearing.
Separator circuits will be turned off. The controller will come out of manual low power.
The DSR is Shadowed in the Floppy Data Rate Select Shadow Register, located at the offset 0x19 in the
Power Control/Runtime Register block.
Drive Rate Table (Recommended)
The DRATE and DENSEL values are mapped onto the DRVDEN pins.
DRT1
DRIVE RATE
0
0
0
0
0
0
0
0
1
1
1
1
DRT0
0
0
0
0
1
1
1
1
0
0
0
0
SEL1
DATA RATE
PRECOMP
1
0
0
1
1
0
0
1
1
0
0
1
Table 6.7 - Precompensation Delays
432
111
001
010
011
100
101
110
000
Table 6.8 - Data Rates
SEL0
DATASHEET
1
0
1
0
1
0
1
0
1
0
1
0
00 = 360K, 1.2M, 720K, 1.44M and 2.88M Vertical Format
01 = 3-Mode Drive
10 = 2 Meg Tape
1Meg
1Meg
1Meg
2Meg
MFM
Default: See Table 6.10
500
300
250
500
500
250
500
250
PRECOMPENSATION
Page 45
DATA RATE
<2Mbps
Default
125.00
166.67
208.33
250.00
41.67
83.34
0.00
DELAY (NSEC)
250
150
125
250
250
125
250
125
FM
---
---
---
---
Default
2Mbps
104.2
20.8
41.7
62.5
83.3
125
Advanced I/O Controller with Motherboard GLUE Logic
0
DENSEL
1
1
0
0
1
1
0
0
1
1
0
0
DRATE(1)
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
SMSC LPC47M172
Datasheet
Related parts for LPC47M172
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
20w Single Output Swi Tching Power Supply Lpc-20 Ser I Es
Manufacturer:
Analog Technology, Inc.
Datasheet:
Part Number:
Description:
Low-profile Coaxial Connectors
Manufacturer:
DDK Ltd.
Datasheet:
Part Number:
Description:
FAST ETHERNET PHYSICAL LAYER DEVICE
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
4-PORT USB2.0 HUB CONTROLLER
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
FDC37C672ENHANCED SUPER I/O CONTROLLER WITH FAST IR
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
COM90C66LJPARCNET Controller/Transceiver with AT Interface and On-Chip RAM
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet: