LPC47M192-NW Standard Microsystems (SMSC), LPC47M192-NW Datasheet - Page 37

• Manufacturer Part Number: LPC47M192-NW
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M192-NW

• Lead Free Status / RoHS Status: Compliant

Note:
Drive Rate Table (Recommended) 00 = 360K, 1.2M, 720K, 1.44M and 2.88M Vertical Format
Note 1: The DRATE and DENSEL values are mapped onto the DRVDEN pins.
SMSC DS – LPC47M192
The DSR is Shadowed in the Floppy Data Rate Select Shadow Register, located at the offset 0x1F in the
runtime register block Separator circuits will be turned off. The controller will come out of manual low
power.
DRT1
DRIVE RATE
DT1
0
0
0
0
0
0
0
0
1
1
1
1
0
1
0
1
DRT0
DT0
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
SEL1
01 = 3-Mode Drive
10 = 2 Meg Tape
DATA RATE
DRVDEN1 (1)
Table 10 – Default Precompensation Delays
1
0
0
1
1
0
0
1
1
0
0
1
DRATE0
DRATE0
DRATE0
DRATE1
DATA RATE
500 Kbps
300 Kbps
250 Kbps
2 Mbps
1 Mbps
SEL0
DATASHEET
Table 9 – DRVDEN Mapping
1
0
1
0
1
0
1
0
1
0
1
0
Table 8 – Data Rates
1Meg
1Meg
1Meg
2Meg
MFM
500
300
250
500
500
250
500
250
Page 37
DATA RATE
DRVDEN0 (1)
PRECOMPENSATION
nDENSEL
DENSEL
DRATE1
DRATE0
DELAYS
41.67 ns
250
150
125
250
250
125
250
125
FM
20.8 ns
---
---
---
---
125 ns
125 ns
125 ns
4/2/1 MB 3.5”
2/1 MB 5.25” FDDS
2/1.6/1 MB 3.5” (3-MODE)
PS/2
DENSEL
1
1
0
0
1
1
0
0
1
1
0
0
DRIVE TYPE
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
Rev. 03/30/05