LPC47M107S-MS Standard Microsystems (SMSC), LPC47M107S-MS Datasheet - Page 32

• Manufacturer Part Number: LPC47M107S-MS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M107S-MS

• Pin Count: 100
• Lead Free Status / RoHS Status: Compliant

STATUS REGISTER ENCODING
During the Result Phase of certain commands, the Data Register contains data bytes that give the status of the
command just executed.
BIT NO.
BIT NO.
7,6
1,0
5
4
3
2
7
6
5
4
3
2
1
0
IC
SE
EC
H
DS1,0
EN
DE
OR
ND
NW
MA
SYMBOL
SYMBOL
Interrupt Code 00 - Normal termination of command.
Seek End
Equipment
Check
Head Address The current head address.
Drive Select
End of
Cylinder
Data Error
Overrun/
Underrun
No Data
Not Writeable
Missing
Address Mark
NAME
NAME
Table 12 - Status Register 0
Table 13 - Status Register 1
command was properly executed and completed without
error.
01 - Abnormal termination of command.
execution was started, but was not successfully
completed.
10 - Invalid command. The requested command could
not be executed.
11 - Abnormal termination caused by Polling.
The FDC completed a Seek, Relative Seek or
Recalibrate command (used during a Sense Interrupt
Command).
The TRK0 pin failed to become a "1" after:
1. 80 step pulses in the Recalibrate command.
2. The Relative Seek command caused the FDC to
Unused. This bit is always "0".
The current selected drive.
The FDC tried to access a sector beyond the final sector
of the track (255D). Will be set if TC is not issued after
Read or Write Data command.
Unused. This bit is always "0".
The FDC detected a CRC error in either the ID field or
the data field of a sector.
Becomes set if the FDC does not receive CPU or DMA
service within the required time interval, resulting in data
overrun or underrun.
Unused. This bit is always "0".
Any one of the following:
1. Read Data, Read Deleted Data command - the FDC
2. Read ID command - the FDC cannot read the ID field
3. Read A Track command - the FDC cannot find the
WP pin became a "1" while the FDC is executing a Write
Data, Write Deleted Data, or Format A Track command.
Any one of the following:
1. The FDC did not detect an ID address mark at the
2.
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step outward beyond Track 0.
did not find the specified sector.
without an error.
proper sector sequence.
specified track after encountering the index pulse
from the nINDEX pin twice.
deleted data address mark on the specified track.
The FDC cannot detect a data address mark or a
DESCRIPTION
DESCRIPTION
The specified
Command