FDC37C78_07 SMSC [SMSC Corporation], FDC37C78_07 Datasheet - Page 17
FDC37C78_07
Manufacturer Part Number
FDC37C78_07
Description
Floppy Disk Controller
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37C78_07.pdf
(82 pages)
- Current page: 17 of 82
- Download datasheet (348Kb)
Drive Rate Table (Recommended)
Note 1: This is for DENSEL in normal mode.
Note 2: This is for DRATE0, DRATE1 when Drive Opt are 00.
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
DATA RATE
1
0
0
1
1
0
0
1
1
0
0
1
*The 2 Mbps data rate is only available if V
Table 12 - Default Precompensation Delays
SEL0
1
0
1
0
1
0
1
0
1
0
1
0
DATA RATE
500 Kbps
300 Kbps
250 Kbps
2 Mbps
1 Mbps
00 = 360K, 1.2M, 720K, 1.44M and 2.88M Vertical Format
01 = 3-Mode Drive
10 = 2 Meg Tape
1Meg
1Meg
1Meg
2Meg
MFM
Table 11 - Data Rates
500
300
250
500
500
250
500
250
DATA RATE
17
250
150
125
250
250
125
250
125
PRECOMPENSATION
FM
---
---
---
---
DELAYS
41.67 ns
20.8 ns
125 ns
125 ns
125 ns
IDENT=1
1
1
0
0
1
1
0
0
1
1
0
0
DENSEL (1)
CC
= 5V.
IDENT=0
0
0
1
1
0
0
1
1
0
0
1
1
DRATE (2)
1
1
0
0
1
1
0
0
1
1
0
0
1
2
1
0
1
0
1
0
1
0
1
0
1
0
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