LPC47M142-NC Standard Microsystems (SMSC), LPC47M142-NC Datasheet - Page 33

• Manufacturer Part Number: LPC47M142-NC
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M142-NC

• Lead Free Status / RoHS Status: Not Compliant

Drive Rate Table (Recommended)
Note 1: The DRATE and DENSEL values are mapped onto the DRVDEN pins.
SMSC DS – LPC47M14X
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
Table 11 – Default Precompensation Delays
SEL1
00 = 360K, 1.2M, 720K, 1.44M and 2.88M Vertical Format
01 = 3-Mode Drive
10 = 2 Meg Tape
DATA RATE
DRVDEN1 (1)
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
Table 10 – DRVDEN Mapping
SEL0
Table 9 – Data Rates
1
0
1
0
1
0
1
0
1
0
1
0
1Meg
1Meg
1Meg
2Meg
MFM
500
300
250
500
500
250
500
250
Page 33
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. 03/19/2001