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FDC37C78-HT Datasheet(PDF) 14 Page - Microchip Technology

Part # FDC37C78-HT
Description  Floppy Disk Controller
PDF  82 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

FDC37C78-HT Datasheet(HTML) 14 Page - Microchip Technology

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14
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



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