SIO10N268 Datasheet, PDF (84/251 Pages) SMSC Corporation – Advenced Notebook I/O for ISA or LPC Designs with X-Bus Interface for I/O, Memory, and FWH Emulation and Four Srial Ports

Advanced Notebook I/O for ISA or LPC Designs
Datasheet
FORMAT FIELDS
SYSTEM 34 (DOUBLE DENSITY) FORMAT
DATA
GAP4a SYNC IAM GAP1 SYNC IDAM C H S N C GAP2 SYNC ^AM
C
80x 12x
50x 12x
Y D E O R 22x 12x
DATA R GAP3 GAP 4b
4E
00
4E 00
L
C
C 4E 00
C
3x FC
C2
3x FE
A1
3x FB
A1 F8
SYSTEM 3740 (SINGLE DENSITY) FORMAT
DATA
GAP4a SYNC IAM GAP1 SYNC IDAM C H S N C GAP2 SYNC ^AM
C
40x
6x
26x 6x
Y D E O R 11x 6x
DATA R GAP3 GAP 4b
FF
00
FF 00
L
C
C FF 00
C
FC
FE
FB or
F8
PERPENDICULAR FORMAT
DATA
GAP4a SYNC IAM GAP1 SYNC IDAM C H S N C GAP2 SYNC ^AM
C
80x 12x
4E
00
50x 12x
4E 00
Y D E O R 41x 12x
L
C
C 4E 00
DATA R GAP3 GAP 4b
C
3x FC
3x FE
3x FB
C2
A1
A1 F8
Table 8.29 - Typical Values for Formatting
FORMAT SECTOR SIZE
N
SC
GPL1
GPL2
128
00
12
07
09
128
00
10
10
19
512
02
08
18
30
FM
1024
03
04
46
87
2048
04
02
C8
FF
5.25"
Drives
4096
...
05
01
C8
FF
...
256
01
12
0A
0C
256
01
10
20
32
512*
02
09
2A
50
MFM
1024
03
04
80
F0
2048
04
02
C8
FF
4096
05
01
C8
FF
...
...
128
0
0F
07
1B
3.5"
FM
256
Drives
512
1
09
0F
2A
2
05
1B
3A
256
1
0F
0E
36
MFM
512**
2
09
1B
54
1024
3
05
35
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 8.13 All values except sector size are in hex.
Rev. 0.5 (03-24-05)
Page 84
DATASHEET
SMSC SIO10N268