FDC37B72X datasheet(24/238 Pages) SMSC

Part #	FDC37B72X

Description	128 Pin Enhanced Super I/O Controller with ACPI Support

Download	238 Pages

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Manufacturer	SMSC [SMSC Corporation]

Direct Link	http://www.smsc.com

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24

TABLE 11 - PRECOMPENSATION DELAYS

PRECOMP

432

PRECOMPENSATION

DELAY (nsec)

<2Mbps

2Mbps

111

001

010

011

100

101

110

000

0.00

41.67

83.34

125.00

166.67

208.33

250.00

Default

0

20.8

41.7

62.5

83.3

104.2

125

Default

Default: See Table 11

TABLE 12 - DATA RATES

DRIVE RATE

DATA RATE

DENSEL

DRATE(1)

DRT1

DRT0

SEL1

SEL0

MFM

FM

1

0

1

1Meg

---

1

0

500

250

1

0

1

300

150

0

1

0

1

0

250

125

0

1

0

1

1Meg

---

1

0

1

0

500

250

1

0

1

0

1

500

250

0

1

0

1

0

250

125

0

1

0

1

0

1

1Meg

---

1

0

500

250

1

0

1

0

1

2Meg

---

0

1

0

1

0

250

125

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 DRVDEN pins.

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FDC37B72X Datasheet(PDF) 24 Page - SMSC Corporation

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