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PC87311AVF Datasheet(PDF) 67 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87311AVF
Description  PC87311A/PC87312 (SuperI/OTM II/III) Floppy Disk Controller with Dual UARTs, Parallel Port, and IDE Interface
PDF  78 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87311AVF Datasheet(HTML) 67 Page - National Semiconductor (TI)

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90 Device Description (Continued)
925 Transmitter Timing
Symbol
Parameter
Min
Max
Units
tHR
Delay from WR (WR THR) to Reset IRQ
55
ns
tIR
Delay from RD (RD IIR) to Reset IRQ (THRE)
55
ns
tIRS
Delay from Initial IRQ Reset to Transmit Start
8
24
BAUDOUT Cycles
tSI
Delay from Initial Write to IRQ
16
24
BAUDOUT Cycles
tSTI
Delay from Start Bit to IRQ (THRE)
8
BAUDOUT Cycles
TLF11362 – 21
Note 1
See Write cycle timing
Figure 9-3
Note 2
See Read cycle timing
Figure 9-2
FIGURE 9-5 Transmitter Timing
67



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