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PC87311A Datasheet(PDF) 75 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza PC87311A
Descripción Electrónicos  PC87311A/PC87312 (SuperI/OTM II/III) Floppy Disk Controller with Dual UARTs, Parallel Port, and IDE Interface
PDF  78 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87311A Datasheet(HTML) 75 Page - National Semiconductor (TI)

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100 Reference (Continued)
102 EXAMPLE FOUR DRIVE CIRCUIT USING THE PC87311A12
Hex Buffers
ICC e 40 mA
open collector
TLF11362 – 35
FIGURE 10-1 PC87311A12 Four Floppy Drive Circuit
TABLE 10-1 PC87311A12 Four Floppy Drive Encoding
MTR0
DR1
DR0
Result
0
0
0
DRV0 and MTR0 Active
0
0
1
DRV1 and MTR1 Active
0
1
0
DRV2 and MTR2 Active
0
1
1
DRV3 and MTR3 Active
1
0
0
DRV0 Active and MTR0 Inactive
1
0
1
DRV1 Active and MTR1 Inactive
1
1
0
DRV2 Active and MTR2 Inactive
1
1
1
DRV3 Active and MTR3 Inactive
The equations shown in
Figure 10-2 define the signals of the PC87311A12 IDE pins for primary IDE addresses A complete IDE
interface using these pins is shown in
Figure 10-3
Equations
Comments
HCS0 e A9 A8 A7 A6 A5 A4 A3 AEN
Active at 1F0 – 1F7
HCS1 e A9 A8 A7 A6 A5 A4 A3 A2 A1 AEN
Active at 3F6 3F7
IDELO e HCS0 (RD a WR) a HCS1
(WR A0) a RD
Write 1F0 – 1F7 3F6 Read 1F0 – 1F7 3F6 3F7
IDEHI e IOCS16 HCS0 (RD a WR) SELAT
Read or Write 1F0 – 1F7 in AT Mode
IDED7 (read) e HCS0 RD a (HCS1 A0) RD
Sources D7 during Read 1F0 – 1F7 and 3F6
IDED7 (write) e WR HCS0 a (HCS1 A0)
D7 during Write 1F0 – 1F7 and 3F6
FIGURE 10-2 IDE Interface Signal Equations
75



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