PC87338 datasheet(99/221 Pages) NSC

99 / 221 page

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FIGURE 58. IBM, Perpendicular, and ISO Formats Supported by FORMAT TRACK Command

Gap 0

80 of

SYNC

12 of

IAM

3 of

C2* FC

Gap 1

50 of

3 of

A1*

Gap 2

22 of

SYNC

12 of

SYNC

12 of

3 of

A1*

Data

Gap 3

Program-

able

Gap 4

Gap 0

80 of

SYNC

12 of

IAM

3 of

C2* FC

Gap 1

50 of

3 of

A1*

Gap 2

41 of

SYNC

12 of

SYNC

12 of

3 of

A1*

Data

Gap 3

Program-

able

Gap 4

Gap 1

32 of

3 of

A1*

Gap 2

22 of

SYNC

12 of

SYNC

12 of

3 of

A1*

Data

Gap 3

Program-

able

Gap 4

INDEX Pulse

IBM

Format

(MFM)

Perpendicular

Format

ISO

Format

(MFM)

Index

Field

Address Field

Data Field

Repeated for each sector

A1* = Data Pattern of A1, Clock Pattern of 0A. All other data rates use gap 2 = 22 bytes.

C2* = Data Pattern of C2, Clock Pattern of 14

Toshiba

Address

GAP0

40 of

SYNC

6 of

IAM

FC*

GAP1

26 of

FE*

GAP2

11 of

SYNC

6 of

SYNC

6 of

Data

GAP3

program-

able

GAP4

FB* or

F8*

IBM

Format

(FM)

Result Phase

5432

Result Phase Status Register 0 (ST0)

Result Phase Status Register 1 (ST1)

Result Phase Status Register 2 (ST2)

Undefined

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