FDC37B72X SMSC Corporation, FDC37B72X Datasheet - Page 24
FDC37B72X
Manufacturer Part Number
FDC37B72X
Description
128 Pin Enhanced Super I/O Controller
Manufacturer
SMSC Corporation
Datasheet
1.FDC37B72X.pdf
(238 pages)
- Current page: 24 of 238
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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.
01 = 3-Mode Drive
10 = 2 Meg Tape
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
TABLE 11 - PRECOMPENSATION DELAYS
DATA RATE
PRECOMP
1
0
0
1
1
0
0
1
1
0
0
1
432
111
001
010
011
100
101
110
000
SEL0
TABLE 12 - DATA RATES
1
0
1
0
1
0
1
0
1
0
1
0
Default: See Table 11
1Meg
1Meg
1Meg
2Meg
MFM
500
300
250
500
500
250
500
250
PRECOMPENSATION
DATA RATE
<2Mbps
Default
125.00
166.67
208.33
250.00
41.67
83.34
24
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
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
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