FDC37C666GT View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

MFG CO.

FDC37C666GT

High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers

SMSC -> Microchip 

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Table 7 - External 2 to 4 Drive Decode - Normal

DIGITAL OUTPUT REGISTER

DRIVE SELECT

OUTPUTS

(ACTIVE LOW)

MOTOR ON OUTPUTS

(ACTIVE LOW)

Bit 7

Bit 6

Bit 5

Bit 4

Bit1

Bit 0

nDS1

nDS0

nMTR1

nMTR0

X

X

X

1

0

0

0

0

1

0

X

X

1

X

0

1

0

1

1

0

X

1

X

X

1

0

1

0

1

0

1

X

X

X

1

1

1

1

1

0

X

X

X

0

0

0

0

0

1

1

X

X

0

X

0

1

0

1

1

1

X

0

X

X

1

0

1

0

1

1

0

X

X

X

1

1

1

1

1

1

Table 8 - External 2 to 4 Drive Decode - Drives 0 and 1 Swapped

DIGITAL OUTPUT REGISTER

DRIVE SELECT

OUTPUTS

(ACTIVE LOW)

MOTOR ON OUTPUTS

(ACTIVE LOW)

Bit 7

Bit 6

Bit 5

Bit 4

Bit1

Bit 0

nDS1

nDS0

nMTR1

nMTR0

X

X

X

1

0

0

0

1

1

0

X

X

1

X

0

1

0

0

1

0

X

1

X

X

1

0

1

0

1

0

1

X

X

X

1

1

1

1

1

0

X

X

X

0

0

0

0

1

1

1

X

X

0

X

0

1

0

0

1

1

X

0

X

X

1

0

1

0

1

1

0

X

X

X

1

1

1

1

1

1

30

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