FDC37C669-MT SMSC, FDC37C669-MT Datasheet - Page 32

• 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

Model 30 Mode
BITS 0 - 1 DATA RATE SELECT
These bits control the data rate of the floppy controller.
See Table 13 for the settings corresponding to the
individual data rates.
unaffected by a software reset, and are set to 250kb/s
after a hardware reset.
BIT 2 NOPREC
This bit reflects the value of NOPREC bit set in the CCR
register.
RESET
COND.
CHG
DSK
N/A
7
The data rate select bits are
6
0
0
5
0
0
4
0
0
DMAEN NOPREC DRATE
32
3
0
BIT 3 DMAEN
This bit reflects the value of DMAEN bit set in the DOR
register bit 3.
BITS 4 - 6 UNDEFINED
Always read as a logic "0"
BIT 7 DSKCHG
This bit monitors the pin of the same name and reflects
the opposite value seen on the pin.
2
0
SEL1
1
1
DRATE
SEL0
0
0