參數(shù)資料
型號(hào): 82371FB
廠商: INTEL CORP
元件分類: 總線控制器
英文描述: Bridge Between the PCI Bus and the ISA BUS(PCI總線和ISA總線間的橋)
中文描述: ISA BUS CONTROLLER, PQFP208
封裝: QFP-208
文件頁(yè)數(shù): 7/36頁(yè)
文件大?。?/td> 558K
代理商: 82371FB
Timing Specification —
82371FB (PIIX)
Datasheet Addendum
3
1.4
AC Characteristics
This section provides the AC parameters. Unless otherwise specified, the units for timing
parameters are nanoseconds.
Table 3. Clock/Reset Timings
Functional Operating Range (V
CC
=
5 V ±5%, T
CASE
= 0° C to +85° C)
Sym
Parameter
Min
Max
Units
Notes
Fig
PCI Clock Timings
PCICLK
t1a
Period
30
40
ns
1
t1b
High Time
12
ns
1
t1c
Low Time
12
ns
1
t1c
Rise Time
3
ns
1
tt1d
Fall Time
3
ns
1
ISA Clock Timings
SYSCLK
t1f
Period
120
125
ns
1
t1g
High Time
56
ns
1
t1h
Low time
56
ns
1
t1i
Rise Time
4
ns
1
t1j
Fall time
4
ns
1
Oscillator Clock Timings
OSC
t1l
OSC Period
67
70
ns
1
t1m
High Time
20
ns
1
t1n
Low time
20
ns
1
Reset Timings
t2a
CPURST, PCIRST#, RSTDRV Driven
Inactive After PWROK is Driven Active High.
2
PCICLK
3
t2b
CPURST, PCIRST#, RSTDRV Active Pulse
Width. Initiated via the RC Register.
1
ms
4
t2c
CPURST Valid Delay from PCICLK Rising
3
25
ns
30
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