FDC37C669-MT SMSC, FDC37C669-MT Datasheet - Page 57

• 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

Register 0 to "01" indicating abnormal termination, sets
the ND bit in Status Register 1 to "1" indicating a sector
not found, and terminates the Read Data Command.
After reading the ID and Data Fields in each
VALUE
SK BIT
0
0
1
1
MT
0
1
0
1
0
1
Table 22 - Skip Bit vs Read Data Command
Normal Data
Deleted Data
Normal Data
Deleted Data
DATA ADDRESS
ENCOUNTERED
N
1
1
2
2
3
3
MARK TYPE
Table 21 - Effects of MT and N Bits
256 x 26 = 6,656
256 x 52 = 13,312
512 x 15 = 7,680
512 x 30 = 15,360
1024 x 8 = 8,192
1024 x 16 = 16,384
MAXIMUM TRANSFER
CAPACITY
SECTOR
READ?
Yes
Yes
Yes
No
57
sector, the FDC checks the CRC bytes. If a CRC error
occurs in the ID or data field, the FDC sets the IC code in
Status Register 0 to "01" indicating abnormal termination,
sets the DE bit flag in Status Register 1 to "1", sets the
DD bit in Status Register 2 to "1" if CRC is incorrect in the
ID field, and terminates the Read Data Command. Table
22 describes the effect of the SK bit on the Read Data
command execution and results. Except where noted in
Table 22, the C or R value of the sector address is
automatically incremented (see Table 24).
CM BIT OF
ST2 SET?
26 at side 0 or 1
26 at side 1
15 at side 0 or 1
15 at side 1
8 at side 0 or 1
16 at side 1
FINAL SECTOR READ
Yes
Yes
No
No
RESULTS
FROM DISK
Normal
termination.
Address not
incremented. Next
sector not
searched for.
Normal
termination.
Normal
termination. Sector
not read
("skipped").
DESCRIPTION OF
RESULTS