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FDC37C669-MT View Datasheet(PDF) - SMSC -> Microchip

Part NameDescriptionManufacturer
FDC37C669-MT PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support SMSC
SMSC -> Microchip SMSC
FDC37C669-MT Datasheet PDF : 162 Pages
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DRIVE RATE
DRT1 DRT0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
Table 11 - Data Rates
DATA RATE
DATA RATE
SEL1 SEL0 MFM FM
1
1
1Meg
---
0
0
500
250
0
1
300
150
1
0
250
125
1
1
1Meg
---
0
0
500
250
0
1
500
250
1
0
250
125
1
1
1Meg
---
0
0
500
250
0
1
2Meg
---
1
0
250
125
DENSEL (1)
IDENT=1 IDENT=0
1
0
1
0
0
1
0
1
1
0
1
0
0
1
0
1
1
0
1
0
0
1
0
1
DRATE (2)
1
2
1
1
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
0
0
0
1
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:This is for DENSEL in normal mode.
Note 2:This is for DRATE0, DRATE1 when Drive Opt are 00.
Table 12 - Default Precompensation Delays
DATA RATE
PRECOMPENSATION
DELAYS
2 Mbps
125 ns
1 Mbps
41.67 ns
500 Kbps
125 ns
300 Kbps
125 ns
250 Kbps
125 ns
*The 2 Mbps data rate is only available if VCC = 5V.
28
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