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PC87351 Datasheet(PDF) 82 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87351
Description  PC87351 PC98 and ACPI Compliant SuperI/O with System Wake-Up Control
PDF  86 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87351 Datasheet(HTML) 82 Page - National Semiconductor (TI)

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11.0 Device Characteristics (Continued)
82
www.national.com
11.2.8
Modem Control Timing
11.2.9
FDC Write Data Timing
tDRP tICP tWDW Values
1. Not tested. Guaranteed by design.
1. tCP is the clock period defined in Section 11.2.2.
Symbol
Parameter
Min
Max
Unit
tHL
RI2,1 High to Low Transition
10
nsec
tLH
RI2,1 Low to High Transition
10
nsec
tSIM
Delay to Set IRQ from Modem Input
40
nsec
Symbol
Parameter
Min
Max
Unit
tHDH
HDSEL Hold from WGATE Inactive1
750
µsec
tHDS
HDSEL Setup to WGATE Active1
100
µsec
tWDW
Write Data Pulse Width
See tDRP, tICP and tWDW values in table below
Data Rate
tDRP
tICP
tICP Nominal
tWDW
tWDW Minimum
Unit
1 Mbps
1000
6 x tCP
1
125
2 x tICP
250
nsec
500 Kbps
2000
6 x tCP
1
125
2 x tICP
250
nsec
300 Kbps
3333
10 x tCP
1
208
2 x tICP
375
nsec
250 Kbps
4000
12 x tCP
1
250
2 x tICP
500
nsec
CTS, DSR, DCD
INTERRUPT
(Read MSR)
RI
tSIM
tSIM
tSIM
tHL
tLH
(Read MSR)
tHDS
tHDH
tWDW
HDSEL
WGATE
WDATA



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