F71862
1
0
NW
MA
R
R
-
-
No Writable
Set when WPT# is active during execution of write commands.
Missing Address Mark.
Set when the following conditions occurred:
1. Cannot detect an ID address mark at the specified track after
encountering the index pulse form the INDEX# pin twice.
2. Cannot detect a data address mark or a deleted data address mark on the
specified track.
Status Registers 2
Bit
Name
R/W Default
Description
7
6
Reserved
-
-
-
Unused. This bit is always “0”.
CM
R
Control Mark.
Set when following conditions occurred:
1. Encounters a deleted data address mark during a READ DATA command.
2. Encounters a data address mark during a READ DELETED DATA
command.
5
4
DD
R
R
-
-
Data Error in Data Field.
The FDC detects a CRC error in the data field.
WC
Wrong Cylinder.
Set when the track address from the sector ID field is different from the track
address maintained inside the FDC.
3
2
SE
SN
R
R
-
-
Scan Equal.
Set if the equal condition is satisfied during execution of the SCAN command.
Scan Not Satisfied.
Set when the FDC cannot find a sector on the track which meets the desired
condition during any scan command.
1
0
BC
R
R
-
-
Bad Cylinder.
The track address from the sector ID field is different from the track address
maintained inside the FDC and is equal to FFh which indicates a bad track.
MD
Missing Data Address Mark.
Set when the FDC cannot detect a data address mark or a deleted data
address mark.
Status Registers 3
Bit
Name
R/W Default
Description
7
6
Reserved
-
-
-
Unused. This bit is always “0”.
WP
R
Write Protect.
Indicates the status of WPT# pin.
5
4
Reserved
T0
R
R
-
-
Unused. This bit is always “1”.
Track 0.
Indicates the status of the TRK0# pin.
3
2
Reserved.
HD
R
R
-
-
Unused. This bit is always “1”.
Head Address.
Indicates the status of the HDSEL# pin.
1
DS1
R
-
Drive Select.
23
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
