37C957FR Datasheet, PDF (42/328 Pages) SMSC Corporation – ULTRA I/O CONTROLLER FOR PORTABLE APPLICATIONS

Table 15 - Precompensation Delays
PRECOMP 432
PRECOMPENSATION
DELAY (nsec)
<2Mbps
2Mbps
111
0.00
0
001
41.67
20.8
010
83.34
41.7
011
125.00
62.5
100
166.67
83.3
101
208.33
104.2
110
250.00
125
000
Default
Default
Default: See Table 17
DRIVE RATE
Table 16 - Data Rates
DATA RATE
DATA RATE
DRT1
DRT0 SEL1
SEL0 MFM
FM
0
0
1
1
1Meg
---
0
0
0
0
500
250
0
0
0
1
300
150
0
0
1
0
250
125
0
1
1
1
1Meg
---
0
1
0
0
500
250
0
1
0
1
500
250
0
1
1
0
250
125
1
0
1
1
1Meg
---
1
0
0
0
500
250
1
0
0
1
2Meg
---
1
0
1
0
250
125
DRATE(1)
DENSEL
1
0
1
1
1
1
0
0
0
0
1
0
1
0
1
1
1
1
0
0
0
0
1
0
1
0
1
1
1
1
0
0
0
0
1
0
1
0
Drive Rate Table (Recommended) 00 = 360K, 1.2M, 720K, 1.44M and 2.88M Vertical Format
01 = 3-Mode Drive
10 = 2 Meg Tape
Note 1: The DRATE and DENSEL values are mapped onto the DRIVEDEN pins.
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