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LPC47M192 Datasheet(PDF) 58 Page - SMSC Corporation

Part # LPC47M192
Description  LPC SUPER I/O WITH HARDWARE MONITORING BLOCK
PDF  228 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

LPC47M192 Datasheet(HTML) 58 Page - SMSC Corporation

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SMSC DS – LPC47M192
Page 58
Rev. 03/30/05
DATASHEET
Table 24 contains typical values for gap fields which are dependent upon the size of the sector and the number of
sectors on each track. Actual values can vary due to drive electronics.
FORMAT FIELDS
SYSTEM 34 (DOUBLE DENSITY) FORMAT
GAP4a
80x
4E
SYNC
12x
00
IAM
GAP1
50x
4E
SYNC
12x
00
IDAM
C
Y
L
H
D
S
E
C
N
O
C
R
C
GAP2
22x
4E
SYNC
12x
00
DATA
AM
DATA
C
R
C
GAP3 GAP 4b
3x
C2
FC
3x
A1
FE
3x
A1
FB
F8
SYSTEM 3740 (SINGLE DENSITY) FORMAT
GAP4a
40x
FF
SYNC
6x
00
IAM
GAP1
26x
FF
SYNC
6x
00
IDAM
C
Y
L
H
D
S
E
C
N
O
C
R
C
GAP2
11x
FF
SYNC
6x
00
DATA
AM
DATA
C
R
C
GAP3 GAP 4b
FC
FE
FB or
F8
PERPENDICULAR FORMAT
GAP4a
80x
4E
SYNC
12x
00
IAM
GAP1
50x
4E
SYNC
12x
00
IDAM
C
Y
L
H
D
S
E
C
N
O
C
R
C
GAP2
41x
4E
SYNC
12x
00
DATA
AM
DATA
C
R
C
GAP3 GAP 4b
3x
C2
FC
3x
A1
FE
3x
A1
FB
F8
Table 24 – Typical Values for Formatting
FORMAT
SECTOR SIZE
N
SC
GPL1
GPL2
5.25” Drives
FM
128
128
512
1024
2048
4096
...
00
00
02
03
04
05
...
12
10
08
04
02
01
07
10
18
46
C8
C8
09
19
30
87
FF
FF
MFM
256
256
512*
1024
2048
4096
...
01
01
02
03
04
05
...
12
10
09
04
02
01
0A
20
2A
80
C8
C8
0C
32
50
F0
FF
FF
3.5” Drives
FM
128
256
512
0
1
2
0F
09
05
07
0F
1B
1B
2A
3A
MFM
256
512**
1024
1
2
3
0F
09
05
0E
1B
35
36
54
74
GPL1 = suggested GPL values in Read and Write commands to avoid splice point between data field and
ID field of contiguous sections.
GPL2 = suggested GPL value in Format A Track command.
*PC/AT values (typical)
**PS/2 values (typical). Applies with 1.0 MB and 2.0 MB drives.
Note:
All values except sector size are in hex.



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