FDC37C669-MT SMSC, FDC37C669-MT Datasheet - Page 34

• Manufacturer Part Number: FDC37C669-MT
• Description: IC CTRLR SUPER I/O FLPPY 100TQFP
• Manufacturer: SMSC

Specifications of FDC37C669-MT

• Controller Type: I/O Controller
• Interface: ISA Host
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 25mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1008

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.
7,6
1,0
5
4
3
2
IC
SE
EC
H
DS1,0
SYMBOL
Table 14 - Status Register 0
Interrupt Code 00 - Normal termination of command.
Seek End
Equipment
Check
Head Address The current head address.
Drive Select
NAME
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.
34
step outward beyond Track 0.
DESCRIPTION
The specified
Command