FDC37B78X SMSC Corporation, FDC37B78X Datasheet - Page 26
FDC37B78X
Manufacturer Part Number
FDC37B78X
Description
Enhanced Super I/O Controller with ACPI Support/ Real Time Clock and Consumer IR
Manufacturer
SMSC Corporation
Datasheet
1.FDC37B78X.pdf
(258 pages)
- Current page: 26 of 258
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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
TABLE 11 - PRECOMPENSATION DELAYS
SEL1
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 14
1Meg
1Meg
1Meg
2Meg
MFM
PRECOMPENSATION
500
300
250
500
500
250
500
250
DATA RATE
<2Mbps
Default
125.00
166.67
208.33
250.00
41.67
83.34
26
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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